/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:21:48,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:21:48,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:21:48,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:21:48,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:21:48,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:21:48,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:21:48,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:21:48,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:21:48,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:21:48,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:21:48,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:21:48,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:21:48,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:21:48,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:21:48,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:21:48,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:21:48,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:21:48,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:21:48,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:21:48,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:21:48,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:21:48,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:21:48,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:21:48,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:21:48,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:21:48,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:21:48,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:21:48,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:21:48,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:21:48,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:21:48,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:21:48,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:21:48,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:21:48,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:21:48,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:21:48,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:21:48,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:21:48,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:21:48,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:21:48,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:21:48,124 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 03:21:48,180 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:21:48,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:21:48,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:21:48,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:21:48,186 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:21:48,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:21:48,186 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:21:48,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:21:48,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:21:48,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:21:48,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:21:48,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:21:48,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:21:48,188 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:21:48,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:21:48,188 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:21:48,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:21:48,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:21:48,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:21:48,189 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:21:48,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:21:48,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:21:48,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:21:48,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:21:48,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:21:48,191 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:21:48,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:21:48,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:21:48,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:21:48,192 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:21:48,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:21:48,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:21:48,521 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:21:48,524 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:21:48,525 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:21:48,525 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-15 03:21:48,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53e73dfe6/4ff301c26d3f4bf3af8a6dac4ab341ab/FLAG8dadd207b [2020-10-15 03:21:49,119 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:21:49,119 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-15 03:21:49,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53e73dfe6/4ff301c26d3f4bf3af8a6dac4ab341ab/FLAG8dadd207b [2020-10-15 03:21:49,433 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53e73dfe6/4ff301c26d3f4bf3af8a6dac4ab341ab [2020-10-15 03:21:49,441 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:21:49,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:21:49,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:21:49,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:21:49,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:21:49,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:21:49" (1/1) ... [2020-10-15 03:21:49,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ace65ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:49, skipping insertion in model container [2020-10-15 03:21:49,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:21:49" (1/1) ... [2020-10-15 03:21:49,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:21:49,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:21:49,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:21:50,001 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:21:50,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:21:50,172 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:21:50,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:50 WrapperNode [2020-10-15 03:21:50,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:21:50,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:21:50,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:21:50,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:21:50,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:50" (1/1) ... [2020-10-15 03:21:50,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:50" (1/1) ... [2020-10-15 03:21:50,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:50" (1/1) ... [2020-10-15 03:21:50,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:50" (1/1) ... [2020-10-15 03:21:50,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:50" (1/1) ... [2020-10-15 03:21:50,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:50" (1/1) ... [2020-10-15 03:21:50,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:50" (1/1) ... [2020-10-15 03:21:50,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:21:50,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:21:50,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:21:50,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:21:50,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:21:50,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:21:50,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:21:50,315 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:21:50,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:21:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:21:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:21:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:21:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:21:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:21:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:21:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:21:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:21:50,317 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:21:50,317 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:21:50,317 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:21:50,317 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:21:50,317 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:21:50,317 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:21:50,318 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:21:50,318 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:21:50,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:21:50,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:21:51,309 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:21:51,309 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:21:51,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:21:51 BoogieIcfgContainer [2020-10-15 03:21:51,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:21:51,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:21:51,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:21:51,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:21:51,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:21:49" (1/3) ... [2020-10-15 03:21:51,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e18680e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:21:51, skipping insertion in model container [2020-10-15 03:21:51,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:50" (2/3) ... [2020-10-15 03:21:51,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e18680e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:21:51, skipping insertion in model container [2020-10-15 03:21:51,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:21:51" (3/3) ... [2020-10-15 03:21:51,325 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-15 03:21:51,336 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:21:51,345 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:21:51,359 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:21:51,387 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:21:51,387 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:21:51,388 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:21:51,388 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:21:51,388 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:21:51,388 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:21:51,389 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:21:51,389 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:21:51,414 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states. [2020-10-15 03:21:51,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 03:21:51,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:21:51,429 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] [2020-10-15 03:21:51,430 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:21:51,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:21:51,437 INFO L82 PathProgramCache]: Analyzing trace with hash 2027991055, now seen corresponding path program 1 times [2020-10-15 03:21:51,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:21:51,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254980471] [2020-10-15 03:21:51,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:21:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:21:51,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:52,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:52,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:52,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:52,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:52,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:53,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:54,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:54,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:56,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:21:56,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 03:21:56,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:21:56,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-15 03:21:56,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:21:56,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:21:56,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:21:56,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 03:21:56,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 03:21:56,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-15 03:21:57,169 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:21:57,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:21:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:21:57,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:57,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:21:57,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:21:57,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:21:57,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:21:57,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:21:57,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:21:57,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:21:57,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:21:57,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:21:57,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:21:57,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:21:57,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254980471] [2020-10-15 03:21:57,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:21:57,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:21:57,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141831916] [2020-10-15 03:21:57,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:21:57,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:21:57,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:21:57,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:21:57,291 INFO L87 Difference]: Start difference. First operand 220 states. Second operand 4 states. [2020-10-15 03:21:57,551 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-15 03:21:58,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:21:58,563 INFO L93 Difference]: Finished difference Result 480 states and 776 transitions. [2020-10-15 03:21:58,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:21:58,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-10-15 03:21:58,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:21:58,581 INFO L225 Difference]: With dead ends: 480 [2020-10-15 03:21:58,581 INFO L226 Difference]: Without dead ends: 365 [2020-10-15 03:21:58,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:21:58,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-15 03:21:58,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 355. [2020-10-15 03:21:58,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-10-15 03:21:58,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 573 transitions. [2020-10-15 03:21:58,667 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 573 transitions. Word has length 83 [2020-10-15 03:21:58,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:21:58,667 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 573 transitions. [2020-10-15 03:21:58,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:21:58,668 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 573 transitions. [2020-10-15 03:21:58,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:21:58,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:21:58,673 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] [2020-10-15 03:21:58,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:21:58,674 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:21:58,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:21:58,674 INFO L82 PathProgramCache]: Analyzing trace with hash -824007014, now seen corresponding path program 1 times [2020-10-15 03:21:58,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:21:58,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556007042] [2020-10-15 03:21:58,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:21:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:21:58,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:58,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:58,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:58,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:58,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:59,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:21:59,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:01,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:03,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:22:03,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:22:03,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:22:03,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 03:22:03,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:22:03,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:22:03,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:22:03,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 03:22:03,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 03:22:03,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:22:03,928 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:22:03,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:22:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:22:03,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:03,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:22:03,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:22:03,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:22:03,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:22:03,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:22:03,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:22:03,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:22:03,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:22:03,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:22:03,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:22:03,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:22:03,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556007042] [2020-10-15 03:22:03,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:22:03,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:22:03,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555946379] [2020-10-15 03:22:03,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:22:03,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:22:03,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:22:03,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:22:03,979 INFO L87 Difference]: Start difference. First operand 355 states and 573 transitions. Second operand 4 states. [2020-10-15 03:22:04,296 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-15 03:22:05,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:22:05,406 INFO L93 Difference]: Finished difference Result 711 states and 1137 transitions. [2020-10-15 03:22:05,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:22:05,406 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-10-15 03:22:05,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:22:05,411 INFO L225 Difference]: With dead ends: 711 [2020-10-15 03:22:05,411 INFO L226 Difference]: Without dead ends: 575 [2020-10-15 03:22:05,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:22:05,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-10-15 03:22:05,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 557. [2020-10-15 03:22:05,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2020-10-15 03:22:05,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 891 transitions. [2020-10-15 03:22:05,454 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 891 transitions. Word has length 84 [2020-10-15 03:22:05,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:22:05,454 INFO L479 AbstractCegarLoop]: Abstraction has 557 states and 891 transitions. [2020-10-15 03:22:05,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:22:05,455 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 891 transitions. [2020-10-15 03:22:05,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:22:05,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:22:05,458 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] [2020-10-15 03:22:05,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:22:05,459 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:22:05,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:22:05,459 INFO L82 PathProgramCache]: Analyzing trace with hash 642793413, now seen corresponding path program 1 times [2020-10-15 03:22:05,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:22:05,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469497587] [2020-10-15 03:22:05,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:22:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:22:05,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:05,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:05,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:05,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:05,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:05,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:06,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:10,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:10,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:10,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:22:10,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:22:10,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:22:10,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 03:22:10,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:22:10,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:22:10,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:22:10,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-15 03:22:10,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 03:22:10,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:22:10,739 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:22:10,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:22:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:22:10,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:10,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:22:10,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:22:10,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:22:10,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:22:10,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:22:10,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:22:10,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:22:10,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:22:10,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:22:10,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:22:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:22:10,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469497587] [2020-10-15 03:22:10,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:22:10,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:22:10,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274026449] [2020-10-15 03:22:10,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:22:10,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:22:10,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:22:10,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:22:10,780 INFO L87 Difference]: Start difference. First operand 557 states and 891 transitions. Second operand 4 states. [2020-10-15 03:22:10,951 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-15 03:22:12,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:22:12,123 INFO L93 Difference]: Finished difference Result 1261 states and 2001 transitions. [2020-10-15 03:22:12,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:22:12,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-10-15 03:22:12,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:22:12,140 INFO L225 Difference]: With dead ends: 1261 [2020-10-15 03:22:12,140 INFO L226 Difference]: Without dead ends: 983 [2020-10-15 03:22:12,146 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 [2020-10-15 03:22:12,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2020-10-15 03:22:12,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 949. [2020-10-15 03:22:12,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2020-10-15 03:22:12,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1503 transitions. [2020-10-15 03:22:12,196 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1503 transitions. Word has length 85 [2020-10-15 03:22:12,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:22:12,197 INFO L479 AbstractCegarLoop]: Abstraction has 949 states and 1503 transitions. [2020-10-15 03:22:12,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:22:12,197 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1503 transitions. [2020-10-15 03:22:12,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:22:12,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:22:12,200 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] [2020-10-15 03:22:12,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:22:12,201 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:22:12,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:22:12,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1806219881, now seen corresponding path program 1 times [2020-10-15 03:22:12,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:22:12,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549614282] [2020-10-15 03:22:12,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:22:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:22:12,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:12,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:12,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:12,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:12,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:12,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:14,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:14,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:17,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:22:17,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:22:17,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:22:17,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:22:17,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:22:17,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:22:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:22:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:22:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 03:22:17,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:22:17,620 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:22:17,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:22:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:22:17,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:17,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:22:17,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:22:17,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:22:17,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:22:17,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:22:17,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:22:17,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:22:17,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:22:17,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:22:17,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:22:17,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:22:17,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549614282] [2020-10-15 03:22:17,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:22:17,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:22:17,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56417252] [2020-10-15 03:22:17,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:22:17,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:22:17,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:22:17,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:22:17,664 INFO L87 Difference]: Start difference. First operand 949 states and 1503 transitions. Second operand 9 states. [2020-10-15 03:22:17,884 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:22:22,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:22:22,038 INFO L93 Difference]: Finished difference Result 5813 states and 9009 transitions. [2020-10-15 03:22:22,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 03:22:22,039 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-10-15 03:22:22,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:22:22,071 INFO L225 Difference]: With dead ends: 5813 [2020-10-15 03:22:22,072 INFO L226 Difference]: Without dead ends: 5307 [2020-10-15 03:22:22,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2020-10-15 03:22:22,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5307 states. [2020-10-15 03:22:22,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5307 to 2716. [2020-10-15 03:22:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2716 states. [2020-10-15 03:22:22,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 4250 transitions. [2020-10-15 03:22:22,337 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 4250 transitions. Word has length 86 [2020-10-15 03:22:22,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:22:22,338 INFO L479 AbstractCegarLoop]: Abstraction has 2716 states and 4250 transitions. [2020-10-15 03:22:22,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:22:22,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 4250 transitions. [2020-10-15 03:22:22,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:22:22,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:22:22,351 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] [2020-10-15 03:22:22,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:22:22,352 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:22:22,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:22:22,352 INFO L82 PathProgramCache]: Analyzing trace with hash -793399058, now seen corresponding path program 1 times [2020-10-15 03:22:22,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:22:22,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265064072] [2020-10-15 03:22:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:22:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:22:22,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:22,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:22,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:22,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:22,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:22,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:24,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:27,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:22:27,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:22:27,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:22:27,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:22:27,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:22:27,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:22:27,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:22:27,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-15 03:22:27,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 03:22:27,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:22:27,592 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:22:27,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:22:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:22:27,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:27,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:22:27,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:22:27,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:22:27,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:22:27,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:22:27,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:22:27,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:22:27,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:22:27,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:22:27,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:22:27,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:22:27,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265064072] [2020-10-15 03:22:27,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:22:27,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:22:27,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081185105] [2020-10-15 03:22:27,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:22:27,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:22:27,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:22:27,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:22:27,652 INFO L87 Difference]: Start difference. First operand 2716 states and 4250 transitions. Second operand 4 states. [2020-10-15 03:22:27,897 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-15 03:22:29,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:22:29,086 INFO L93 Difference]: Finished difference Result 7032 states and 10964 transitions. [2020-10-15 03:22:29,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:22:29,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-10-15 03:22:29,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:22:29,118 INFO L225 Difference]: With dead ends: 7032 [2020-10-15 03:22:29,118 INFO L226 Difference]: Without dead ends: 5110 [2020-10-15 03:22:29,126 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 [2020-10-15 03:22:29,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5110 states. [2020-10-15 03:22:29,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5110 to 4692. [2020-10-15 03:22:29,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4692 states. [2020-10-15 03:22:29,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 7270 transitions. [2020-10-15 03:22:29,574 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 7270 transitions. Word has length 86 [2020-10-15 03:22:29,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:22:29,577 INFO L479 AbstractCegarLoop]: Abstraction has 4692 states and 7270 transitions. [2020-10-15 03:22:29,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:22:29,578 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 7270 transitions. [2020-10-15 03:22:29,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-15 03:22:29,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:22:29,592 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] [2020-10-15 03:22:29,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:22:29,592 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:22:29,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:22:29,593 INFO L82 PathProgramCache]: Analyzing trace with hash 290536517, now seen corresponding path program 1 times [2020-10-15 03:22:29,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:22:29,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156683863] [2020-10-15 03:22:29,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:22:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:22:29,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:29,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:29,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:29,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:29,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:34,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:22:34,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 03:22:34,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:22:34,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4415 [2020-10-15 03:22:34,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:22:34,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:22:34,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:22:34,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-15 03:22:34,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 03:22:34,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:22:34,228 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:22:34,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:22:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:22:34,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:34,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:22:34,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:22:34,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:22:34,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:22:34,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:22:34,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:22:34,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:22:34,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:22:34,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:22:34,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:22:34,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:22:34,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156683863] [2020-10-15 03:22:34,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:22:34,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:22:34,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379962078] [2020-10-15 03:22:34,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:22:34,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:22:34,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:22:34,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:22:34,280 INFO L87 Difference]: Start difference. First operand 4692 states and 7270 transitions. Second operand 4 states. [2020-10-15 03:22:34,444 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-15 03:22:35,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:22:35,976 INFO L93 Difference]: Finished difference Result 12901 states and 19879 transitions. [2020-10-15 03:22:35,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:22:35,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-15 03:22:35,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:22:36,016 INFO L225 Difference]: With dead ends: 12901 [2020-10-15 03:22:36,016 INFO L226 Difference]: Without dead ends: 8999 [2020-10-15 03:22:36,025 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 [2020-10-15 03:22:36,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8999 states. [2020-10-15 03:22:36,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8999 to 8661. [2020-10-15 03:22:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8661 states. [2020-10-15 03:22:36,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8661 states to 8661 states and 13277 transitions. [2020-10-15 03:22:36,663 INFO L78 Accepts]: Start accepts. Automaton has 8661 states and 13277 transitions. Word has length 87 [2020-10-15 03:22:36,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:22:36,665 INFO L479 AbstractCegarLoop]: Abstraction has 8661 states and 13277 transitions. [2020-10-15 03:22:36,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:22:36,665 INFO L276 IsEmpty]: Start isEmpty. Operand 8661 states and 13277 transitions. [2020-10-15 03:22:36,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-15 03:22:36,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:22:36,689 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] [2020-10-15 03:22:36,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:22:36,690 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:22:36,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:22:36,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1096396322, now seen corresponding path program 1 times [2020-10-15 03:22:36,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:22:36,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140900021] [2020-10-15 03:22:36,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:22:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:22:36,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:36,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:36,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:37,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:22:37,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 03:22:37,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:22:37,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1187 [2020-10-15 03:22:37,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:22:37,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:22:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:22:37,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 03:22:37,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:22:37,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:22:38,081 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:22:38,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:22:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:22:38,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:38,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:22:38,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:22:38,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:22:38,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:22:38,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:22:38,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:22:38,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:22:38,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:22:38,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:22:38,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:22:38,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:22:38,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140900021] [2020-10-15 03:22:38,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:22:38,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:22:38,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177378253] [2020-10-15 03:22:38,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:22:38,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:22:38,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:22:38,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:22:38,112 INFO L87 Difference]: Start difference. First operand 8661 states and 13277 transitions. Second operand 5 states. [2020-10-15 03:22:39,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:22:39,238 INFO L93 Difference]: Finished difference Result 16303 states and 24830 transitions. [2020-10-15 03:22:39,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:22:39,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-15 03:22:39,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:22:39,276 INFO L225 Difference]: With dead ends: 16303 [2020-10-15 03:22:39,276 INFO L226 Difference]: Without dead ends: 8661 [2020-10-15 03:22:39,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:22:39,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8661 states. [2020-10-15 03:22:39,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8661 to 8661. [2020-10-15 03:22:39,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8661 states. [2020-10-15 03:22:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8661 states to 8661 states and 13085 transitions. [2020-10-15 03:22:39,922 INFO L78 Accepts]: Start accepts. Automaton has 8661 states and 13085 transitions. Word has length 88 [2020-10-15 03:22:39,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:22:39,922 INFO L479 AbstractCegarLoop]: Abstraction has 8661 states and 13085 transitions. [2020-10-15 03:22:39,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:22:39,922 INFO L276 IsEmpty]: Start isEmpty. Operand 8661 states and 13085 transitions. [2020-10-15 03:22:39,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-15 03:22:39,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:22:39,943 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] [2020-10-15 03:22:39,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:22:39,943 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:22:39,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:22:39,943 INFO L82 PathProgramCache]: Analyzing trace with hash 662911651, now seen corresponding path program 1 times [2020-10-15 03:22:39,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:22:39,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292126346] [2020-10-15 03:22:39,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:22:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:22:39,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:40,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:40,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:40,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:41,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:41,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:22:41,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-15 03:22:41,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:22:41,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1879 [2020-10-15 03:22:41,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:22:41,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:22:41,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:22:41,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 03:22:41,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 03:22:41,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:22:42,106 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:22:42,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:22:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:22:42,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:42,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:22:42,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:22:42,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:22:42,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:22:42,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:22:42,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:22:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:22:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:22:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:22:42,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:22:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:22:42,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292126346] [2020-10-15 03:22:42,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:22:42,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:22:42,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562074011] [2020-10-15 03:22:42,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:22:42,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:22:42,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:22:42,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:22:42,157 INFO L87 Difference]: Start difference. First operand 8661 states and 13085 transitions. Second operand 4 states. [2020-10-15 03:22:42,319 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:22:43,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:22:43,791 INFO L93 Difference]: Finished difference Result 18562 states and 27673 transitions. [2020-10-15 03:22:43,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:22:43,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-10-15 03:22:43,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:22:43,824 INFO L225 Difference]: With dead ends: 18562 [2020-10-15 03:22:43,825 INFO L226 Difference]: Without dead ends: 14408 [2020-10-15 03:22:43,838 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 [2020-10-15 03:22:43,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14408 states. [2020-10-15 03:22:44,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14408 to 14406. [2020-10-15 03:22:44,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14406 states. [2020-10-15 03:22:44,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14406 states to 14406 states and 21247 transitions. [2020-10-15 03:22:44,775 INFO L78 Accepts]: Start accepts. Automaton has 14406 states and 21247 transitions. Word has length 90 [2020-10-15 03:22:44,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:22:44,776 INFO L479 AbstractCegarLoop]: Abstraction has 14406 states and 21247 transitions. [2020-10-15 03:22:44,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:22:44,776 INFO L276 IsEmpty]: Start isEmpty. Operand 14406 states and 21247 transitions. [2020-10-15 03:22:44,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-15 03:22:44,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:22:44,806 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] [2020-10-15 03:22:44,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:22:44,806 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:22:44,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:22:44,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1361356453, now seen corresponding path program 1 times [2020-10-15 03:22:44,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:22:44,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546112465] [2020-10-15 03:22:44,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:22:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:22:44,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:44,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:44,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:44,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:45,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:49,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:22:49,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-15 03:22:49,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:22:49,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:22:49,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:22:49,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:22:49,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:22:49,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-15 03:22:49,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 03:22:49,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:22:49,986 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:22:49,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:22:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:22:49,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:50,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:22:50,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:22:50,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:22:50,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:22:50,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:22:50,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:22:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:22:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:22:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:22:50,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:22:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:22:50,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546112465] [2020-10-15 03:22:50,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:22:50,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:22:50,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213517813] [2020-10-15 03:22:50,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:22:50,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:22:50,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:22:50,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:22:50,019 INFO L87 Difference]: Start difference. First operand 14406 states and 21247 transitions. Second operand 4 states. [2020-10-15 03:22:51,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:22:51,982 INFO L93 Difference]: Finished difference Result 23797 states and 35147 transitions. [2020-10-15 03:22:51,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:22:51,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2020-10-15 03:22:51,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:22:52,012 INFO L225 Difference]: With dead ends: 23797 [2020-10-15 03:22:52,012 INFO L226 Difference]: Without dead ends: 17503 [2020-10-15 03:22:52,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:22:52,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17503 states. [2020-10-15 03:22:52,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17503 to 14430. [2020-10-15 03:22:52,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14430 states. [2020-10-15 03:22:52,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14430 states to 14430 states and 21239 transitions. [2020-10-15 03:22:52,898 INFO L78 Accepts]: Start accepts. Automaton has 14430 states and 21239 transitions. Word has length 93 [2020-10-15 03:22:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:22:52,898 INFO L479 AbstractCegarLoop]: Abstraction has 14430 states and 21239 transitions. [2020-10-15 03:22:52,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:22:52,899 INFO L276 IsEmpty]: Start isEmpty. Operand 14430 states and 21239 transitions. [2020-10-15 03:22:52,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-15 03:22:52,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:22:52,923 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] [2020-10-15 03:22:52,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:22:52,923 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:22:52,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:22:52,924 INFO L82 PathProgramCache]: Analyzing trace with hash 387393344, now seen corresponding path program 1 times [2020-10-15 03:22:52,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:22:52,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019381349] [2020-10-15 03:22:52,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:22:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:22:52,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:53,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:53,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:53,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:56,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:22:56,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-15 03:22:56,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:22:56,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3260 [2020-10-15 03:22:56,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:22:56,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:22:56,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:22:56,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:22:56,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 03:22:56,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:22:56,375 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:22:56,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:22:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:22:56,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:22:56,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:22:56,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:22:56,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:22:56,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:22:56,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:22:56,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:22:56,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:22:56,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:22:56,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:22:56,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:22:56,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:22:56,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019381349] [2020-10-15 03:22:56,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:22:56,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:22:56,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461237072] [2020-10-15 03:22:56,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:22:56,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:22:56,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:22:56,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:22:56,400 INFO L87 Difference]: Start difference. First operand 14430 states and 21239 transitions. Second operand 6 states. [2020-10-15 03:22:59,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:22:59,382 INFO L93 Difference]: Finished difference Result 41211 states and 60608 transitions. [2020-10-15 03:22:59,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:22:59,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-10-15 03:22:59,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:22:59,425 INFO L225 Difference]: With dead ends: 41211 [2020-10-15 03:22:59,425 INFO L226 Difference]: Without dead ends: 27441 [2020-10-15 03:22:59,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:22:59,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27441 states. [2020-10-15 03:23:00,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27441 to 14542. [2020-10-15 03:23:00,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14542 states. [2020-10-15 03:23:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14542 states to 14542 states and 21246 transitions. [2020-10-15 03:23:00,513 INFO L78 Accepts]: Start accepts. Automaton has 14542 states and 21246 transitions. Word has length 93 [2020-10-15 03:23:00,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:23:00,513 INFO L479 AbstractCegarLoop]: Abstraction has 14542 states and 21246 transitions. [2020-10-15 03:23:00,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:23:00,513 INFO L276 IsEmpty]: Start isEmpty. Operand 14542 states and 21246 transitions. [2020-10-15 03:23:00,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-15 03:23:00,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:23:00,536 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] [2020-10-15 03:23:00,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:23:00,536 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:23:00,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:23:00,537 INFO L82 PathProgramCache]: Analyzing trace with hash 753584446, now seen corresponding path program 1 times [2020-10-15 03:23:00,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:23:00,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12847275] [2020-10-15 03:23:00,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:23:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:23:00,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:00,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:00,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:00,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:03,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:23:03,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-15 03:23:03,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:23:03,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2566 [2020-10-15 03:23:03,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:23:03,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:23:03,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:23:03,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:23:03,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 03:23:03,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:23:03,292 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:23:03,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:23:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:23:03,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:03,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:23:03,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:23:03,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:23:03,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:23:03,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:23:03,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:23:03,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:23:03,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:23:03,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:23:03,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:23:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:23:03,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12847275] [2020-10-15 03:23:03,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:23:03,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:23:03,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467454776] [2020-10-15 03:23:03,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:23:03,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:23:03,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:23:03,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:23:03,316 INFO L87 Difference]: Start difference. First operand 14542 states and 21246 transitions. Second operand 6 states. [2020-10-15 03:23:06,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:23:06,218 INFO L93 Difference]: Finished difference Result 37419 states and 54710 transitions. [2020-10-15 03:23:06,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:23:06,219 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-10-15 03:23:06,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:23:06,259 INFO L225 Difference]: With dead ends: 37419 [2020-10-15 03:23:06,259 INFO L226 Difference]: Without dead ends: 25639 [2020-10-15 03:23:06,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:23:06,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25639 states. [2020-10-15 03:23:07,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25639 to 14096. [2020-10-15 03:23:07,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14096 states. [2020-10-15 03:23:07,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14096 states to 14096 states and 20486 transitions. [2020-10-15 03:23:07,442 INFO L78 Accepts]: Start accepts. Automaton has 14096 states and 20486 transitions. Word has length 93 [2020-10-15 03:23:07,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:23:07,442 INFO L479 AbstractCegarLoop]: Abstraction has 14096 states and 20486 transitions. [2020-10-15 03:23:07,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:23:07,442 INFO L276 IsEmpty]: Start isEmpty. Operand 14096 states and 20486 transitions. [2020-10-15 03:23:07,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-15 03:23:07,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:23:07,458 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] [2020-10-15 03:23:07,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:23:07,459 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:23:07,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:23:07,459 INFO L82 PathProgramCache]: Analyzing trace with hash 905413330, now seen corresponding path program 1 times [2020-10-15 03:23:07,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:23:07,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059422903] [2020-10-15 03:23:07,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:23:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:23:07,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:07,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:07,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:07,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:08,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:10,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:23:10,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-15 03:23:10,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:23:10,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3289 [2020-10-15 03:23:10,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:23:10,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:23:10,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:23:10,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 03:23:10,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 03:23:10,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:23:10,915 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:23:10,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:23:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:23:10,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:10,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:23:10,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:23:10,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:23:10,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:23:10,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:23:10,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:23:10,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:23:10,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:23:10,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:23:10,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:23:10,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:23:10,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059422903] [2020-10-15 03:23:10,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:23:10,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:23:10,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479130283] [2020-10-15 03:23:10,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:23:10,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:23:10,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:23:10,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:23:10,941 INFO L87 Difference]: Start difference. First operand 14096 states and 20486 transitions. Second operand 4 states. [2020-10-15 03:23:11,105 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-15 03:23:13,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:23:13,624 INFO L93 Difference]: Finished difference Result 33297 states and 48338 transitions. [2020-10-15 03:23:13,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:23:13,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2020-10-15 03:23:13,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:23:13,652 INFO L225 Difference]: With dead ends: 33297 [2020-10-15 03:23:13,652 INFO L226 Difference]: Without dead ends: 25347 [2020-10-15 03:23:13,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:23:13,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25347 states. [2020-10-15 03:23:15,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25347 to 25345. [2020-10-15 03:23:15,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25345 states. [2020-10-15 03:23:15,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25345 states to 25345 states and 36598 transitions. [2020-10-15 03:23:15,237 INFO L78 Accepts]: Start accepts. Automaton has 25345 states and 36598 transitions. Word has length 93 [2020-10-15 03:23:15,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:23:15,237 INFO L479 AbstractCegarLoop]: Abstraction has 25345 states and 36598 transitions. [2020-10-15 03:23:15,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:23:15,238 INFO L276 IsEmpty]: Start isEmpty. Operand 25345 states and 36598 transitions. [2020-10-15 03:23:15,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-15 03:23:15,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:23:15,262 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] [2020-10-15 03:23:15,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:23:15,262 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:23:15,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:23:15,263 INFO L82 PathProgramCache]: Analyzing trace with hash -2115685961, now seen corresponding path program 1 times [2020-10-15 03:23:15,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:23:15,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188596437] [2020-10-15 03:23:15,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:23:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:23:15,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:15,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:15,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:15,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:17,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:23:17,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-15 03:23:17,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:23:17,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2452 [2020-10-15 03:23:17,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:23:17,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:23:17,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:23:17,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:23:17,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 03:23:17,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:23:17,916 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:23:17,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:23:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:23:17,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:17,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:23:17,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:23:17,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:23:17,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:23:17,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:23:17,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:23:17,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:23:17,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:23:17,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:23:17,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:23:17,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:23:17,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188596437] [2020-10-15 03:23:17,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:23:17,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:23:17,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885534478] [2020-10-15 03:23:17,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:23:17,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:23:17,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:23:17,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:23:17,941 INFO L87 Difference]: Start difference. First operand 25345 states and 36598 transitions. Second operand 6 states. [2020-10-15 03:23:22,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:23:22,614 INFO L93 Difference]: Finished difference Result 67919 states and 98047 transitions. [2020-10-15 03:23:22,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:23:22,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-10-15 03:23:22,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:23:22,663 INFO L225 Difference]: With dead ends: 67919 [2020-10-15 03:23:22,664 INFO L226 Difference]: Without dead ends: 45384 [2020-10-15 03:23:22,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:23:22,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45384 states. [2020-10-15 03:23:24,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45384 to 25947. [2020-10-15 03:23:24,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25947 states. [2020-10-15 03:23:24,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25947 states to 25947 states and 37035 transitions. [2020-10-15 03:23:24,412 INFO L78 Accepts]: Start accepts. Automaton has 25947 states and 37035 transitions. Word has length 93 [2020-10-15 03:23:24,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:23:24,413 INFO L479 AbstractCegarLoop]: Abstraction has 25947 states and 37035 transitions. [2020-10-15 03:23:24,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:23:24,413 INFO L276 IsEmpty]: Start isEmpty. Operand 25947 states and 37035 transitions. [2020-10-15 03:23:24,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-15 03:23:24,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:23:24,447 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] [2020-10-15 03:23:24,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:23:24,448 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:23:24,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:23:24,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1947831369, now seen corresponding path program 1 times [2020-10-15 03:23:24,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:23:24,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237704250] [2020-10-15 03:23:24,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:23:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:23:24,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:24,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:24,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:24,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:25,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:28,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:23:28,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-15 03:23:28,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:23:28,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3965 [2020-10-15 03:23:28,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:23:28,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:23:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:23:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-15 03:23:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 03:23:28,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:23:28,590 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:23:28,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:23:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:23:28,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:28,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:23:28,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:23:28,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:23:28,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:23:28,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:23:28,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:23:28,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:23:28,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:23:28,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:23:28,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:23:28,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:23:28,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237704250] [2020-10-15 03:23:28,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:23:28,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:23:28,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621021620] [2020-10-15 03:23:28,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:23:28,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:23:28,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:23:28,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:23:28,614 INFO L87 Difference]: Start difference. First operand 25947 states and 37035 transitions. Second operand 4 states. [2020-10-15 03:23:32,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:23:32,938 INFO L93 Difference]: Finished difference Result 64777 states and 93077 transitions. [2020-10-15 03:23:32,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:23:32,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2020-10-15 03:23:32,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:23:32,985 INFO L225 Difference]: With dead ends: 64777 [2020-10-15 03:23:32,986 INFO L226 Difference]: Without dead ends: 48168 [2020-10-15 03:23:33,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:23:33,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48168 states. [2020-10-15 03:23:36,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48168 to 48166. [2020-10-15 03:23:36,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48166 states. [2020-10-15 03:23:36,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48166 states to 48166 states and 68895 transitions. [2020-10-15 03:23:36,101 INFO L78 Accepts]: Start accepts. Automaton has 48166 states and 68895 transitions. Word has length 93 [2020-10-15 03:23:36,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:23:36,101 INFO L479 AbstractCegarLoop]: Abstraction has 48166 states and 68895 transitions. [2020-10-15 03:23:36,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:23:36,101 INFO L276 IsEmpty]: Start isEmpty. Operand 48166 states and 68895 transitions. [2020-10-15 03:23:36,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-15 03:23:36,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:23:36,150 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] [2020-10-15 03:23:36,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:23:36,150 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:23:36,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:23:36,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1175967716, now seen corresponding path program 1 times [2020-10-15 03:23:36,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:23:36,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402056081] [2020-10-15 03:23:36,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:23:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:23:36,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:36,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:36,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:36,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:38,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:23:38,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-15 03:23:38,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:23:38,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2143 [2020-10-15 03:23:38,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:23:38,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:23:38,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:23:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:23:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:23:38,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:23:38,490 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:23:38,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:23:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:23:38,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:38,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:23:38,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:23:38,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:23:38,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:23:38,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:23:38,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:23:38,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:23:38,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:23:38,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:23:38,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:23:38,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:23:38,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402056081] [2020-10-15 03:23:38,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:23:38,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:23:38,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556489250] [2020-10-15 03:23:38,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:23:38,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:23:38,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:23:38,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:23:38,511 INFO L87 Difference]: Start difference. First operand 48166 states and 68895 transitions. Second operand 6 states. [2020-10-15 03:23:47,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:23:47,047 INFO L93 Difference]: Finished difference Result 137504 states and 196615 transitions. [2020-10-15 03:23:47,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:23:47,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-10-15 03:23:47,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:23:47,154 INFO L225 Difference]: With dead ends: 137504 [2020-10-15 03:23:47,154 INFO L226 Difference]: Without dead ends: 92128 [2020-10-15 03:23:47,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:23:47,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92128 states. [2020-10-15 03:23:50,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92128 to 49006. [2020-10-15 03:23:50,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49006 states. [2020-10-15 03:23:50,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49006 states to 49006 states and 69403 transitions. [2020-10-15 03:23:50,919 INFO L78 Accepts]: Start accepts. Automaton has 49006 states and 69403 transitions. Word has length 93 [2020-10-15 03:23:50,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:23:50,919 INFO L479 AbstractCegarLoop]: Abstraction has 49006 states and 69403 transitions. [2020-10-15 03:23:50,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:23:50,920 INFO L276 IsEmpty]: Start isEmpty. Operand 49006 states and 69403 transitions. [2020-10-15 03:23:50,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-15 03:23:50,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:23:50,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:23:50,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:23:50,965 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:23:50,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:23:50,966 INFO L82 PathProgramCache]: Analyzing trace with hash -789882523, now seen corresponding path program 1 times [2020-10-15 03:23:50,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:23:50,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907913850] [2020-10-15 03:23:50,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:23:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:23:50,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:51,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:51,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:51,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:53,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:23:53,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-15 03:23:53,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:23:53,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2489 [2020-10-15 03:23:53,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:23:53,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:23:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:23:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:23:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 03:23:53,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:23:53,639 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:23:53,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:23:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:23:53,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:23:53,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:23:53,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:23:53,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:23:53,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:23:53,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:23:53,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:23:53,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:23:53,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:23:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:23:53,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:23:53,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:23:53,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907913850] [2020-10-15 03:23:53,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:23:53,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:23:53,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168695969] [2020-10-15 03:23:53,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:23:53,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:23:53,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:23:53,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:23:53,666 INFO L87 Difference]: Start difference. First operand 49006 states and 69403 transitions. Second operand 6 states. [2020-10-15 03:24:02,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:24:02,076 INFO L93 Difference]: Finished difference Result 125121 states and 177509 transitions. [2020-10-15 03:24:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:24:02,077 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-10-15 03:24:02,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:24:02,165 INFO L225 Difference]: With dead ends: 125121 [2020-10-15 03:24:02,165 INFO L226 Difference]: Without dead ends: 84441 [2020-10-15 03:24:02,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:24:02,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84441 states. [2020-10-15 03:24:05,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84441 to 48037. [2020-10-15 03:24:05,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48037 states. [2020-10-15 03:24:06,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48037 states to 48037 states and 67762 transitions. [2020-10-15 03:24:06,046 INFO L78 Accepts]: Start accepts. Automaton has 48037 states and 67762 transitions. Word has length 93 [2020-10-15 03:24:06,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:24:06,046 INFO L479 AbstractCegarLoop]: Abstraction has 48037 states and 67762 transitions. [2020-10-15 03:24:06,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:24:06,047 INFO L276 IsEmpty]: Start isEmpty. Operand 48037 states and 67762 transitions. [2020-10-15 03:24:06,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 03:24:06,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:24:06,095 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] [2020-10-15 03:24:06,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:24:06,096 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:24:06,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:24:06,096 INFO L82 PathProgramCache]: Analyzing trace with hash 728620785, now seen corresponding path program 1 times [2020-10-15 03:24:06,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:24:06,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584071320] [2020-10-15 03:24:06,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:24:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:24:06,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:06,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:06,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:06,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:06,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:06,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:06,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:06,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:06,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:07,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:08,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:11,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:24:11,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 03:24:11,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:24:11,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:24:11,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:24:11,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:24:11,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:24:11,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:24:11,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-15 03:24:11,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:24:11,301 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 27 [2020-10-15 03:24:11,497 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:24:11,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:24:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:24:11,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:11,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:24:11,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:24:11,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:24:11,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:24:11,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:24:11,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:24:11,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:24:11,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:24:11,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:24:11,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:24:11,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:24:11,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584071320] [2020-10-15 03:24:11,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:24:11,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:24:11,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521424572] [2020-10-15 03:24:11,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:24:11,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:24:11,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:24:11,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:24:11,527 INFO L87 Difference]: Start difference. First operand 48037 states and 67762 transitions. Second operand 10 states. [2020-10-15 03:24:11,716 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-15 03:24:24,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:24:24,073 INFO L93 Difference]: Finished difference Result 120857 states and 169680 transitions. [2020-10-15 03:24:24,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-15 03:24:24,073 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-15 03:24:24,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:24:24,172 INFO L225 Difference]: With dead ends: 120857 [2020-10-15 03:24:24,173 INFO L226 Difference]: Without dead ends: 100259 [2020-10-15 03:24:24,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2020-10-15 03:24:24,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100259 states. [2020-10-15 03:24:30,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100259 to 44345. [2020-10-15 03:24:30,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44345 states. [2020-10-15 03:24:30,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44345 states to 44345 states and 62203 transitions. [2020-10-15 03:24:30,508 INFO L78 Accepts]: Start accepts. Automaton has 44345 states and 62203 transitions. Word has length 94 [2020-10-15 03:24:30,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:24:30,508 INFO L479 AbstractCegarLoop]: Abstraction has 44345 states and 62203 transitions. [2020-10-15 03:24:30,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:24:30,508 INFO L276 IsEmpty]: Start isEmpty. Operand 44345 states and 62203 transitions. [2020-10-15 03:24:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 03:24:30,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:24:30,550 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] [2020-10-15 03:24:30,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:24:30,550 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:24:30,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:24:30,551 INFO L82 PathProgramCache]: Analyzing trace with hash -341541445, now seen corresponding path program 1 times [2020-10-15 03:24:30,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:24:30,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675826181] [2020-10-15 03:24:30,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:24:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:24:30,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:30,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:30,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:30,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:30,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:30,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:30,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:30,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:30,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:31,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:31,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:32,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:33,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:35,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:24:35,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 03:24:35,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:24:35,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:24:35,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:24:35,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:24:35,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:24:35,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:24:35,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:24:35,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:24:35,750 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 27 [2020-10-15 03:24:35,944 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:24:35,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:24:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:24:35,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:35,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:24:35,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:24:35,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:24:35,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:24:35,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:24:35,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:24:35,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:24:35,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:24:35,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:24:35,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:24:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:24:35,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675826181] [2020-10-15 03:24:35,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:24:35,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:24:35,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692715224] [2020-10-15 03:24:35,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:24:35,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:24:35,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:24:35,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:24:35,973 INFO L87 Difference]: Start difference. First operand 44345 states and 62203 transitions. Second operand 10 states. [2020-10-15 03:24:36,168 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-15 03:24:53,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:24:53,137 INFO L93 Difference]: Finished difference Result 149705 states and 209476 transitions. [2020-10-15 03:24:53,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 03:24:53,138 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-15 03:24:53,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:24:53,265 INFO L225 Difference]: With dead ends: 149705 [2020-10-15 03:24:53,265 INFO L226 Difference]: Without dead ends: 126615 [2020-10-15 03:24:53,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2020-10-15 03:24:53,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126615 states. [2020-10-15 03:24:58,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126615 to 44605. [2020-10-15 03:24:58,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44605 states. [2020-10-15 03:24:59,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44605 states to 44605 states and 62513 transitions. [2020-10-15 03:24:59,012 INFO L78 Accepts]: Start accepts. Automaton has 44605 states and 62513 transitions. Word has length 94 [2020-10-15 03:24:59,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:24:59,012 INFO L479 AbstractCegarLoop]: Abstraction has 44605 states and 62513 transitions. [2020-10-15 03:24:59,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:24:59,012 INFO L276 IsEmpty]: Start isEmpty. Operand 44605 states and 62513 transitions. [2020-10-15 03:24:59,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 03:24:59,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:24:59,052 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] [2020-10-15 03:24:59,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:24:59,052 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:24:59,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:24:59,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1480108128, now seen corresponding path program 1 times [2020-10-15 03:24:59,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:24:59,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745169292] [2020-10-15 03:24:59,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:24:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:24:59,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:59,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:59,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:59,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:59,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:59,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:59,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:59,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:59,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:24:59,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:00,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:01,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:01,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:04,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:04,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 03:25:04,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:25:04,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 03:25:04,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:04,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:25:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:25:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 03:25:04,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:04,398 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:25:04,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:04,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:04,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:04,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:04,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:04,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:25:04,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:04,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:04,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:25:04,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:04,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:25:04,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:25:04,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745169292] [2020-10-15 03:25:04,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:04,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:25:04,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238252964] [2020-10-15 03:25:04,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:25:04,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:04,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:25:04,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:25:04,427 INFO L87 Difference]: Start difference. First operand 44605 states and 62513 transitions. Second operand 9 states. [2020-10-15 03:25:04,635 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:25:27,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:27,709 INFO L93 Difference]: Finished difference Result 174283 states and 244255 transitions. [2020-10-15 03:25:27,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 03:25:27,710 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-15 03:25:27,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:27,867 INFO L225 Difference]: With dead ends: 174283 [2020-10-15 03:25:27,868 INFO L226 Difference]: Without dead ends: 151459 [2020-10-15 03:25:27,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:25:28,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151459 states. [2020-10-15 03:25:34,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151459 to 47403. [2020-10-15 03:25:34,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47403 states. [2020-10-15 03:25:34,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47403 states to 47403 states and 66172 transitions. [2020-10-15 03:25:34,387 INFO L78 Accepts]: Start accepts. Automaton has 47403 states and 66172 transitions. Word has length 94 [2020-10-15 03:25:34,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:34,388 INFO L479 AbstractCegarLoop]: Abstraction has 47403 states and 66172 transitions. [2020-10-15 03:25:34,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:25:34,388 INFO L276 IsEmpty]: Start isEmpty. Operand 47403 states and 66172 transitions. [2020-10-15 03:25:34,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 03:25:34,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:34,703 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] [2020-10-15 03:25:34,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:25:34,703 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:34,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:34,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1313253799, now seen corresponding path program 1 times [2020-10-15 03:25:34,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:34,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295012346] [2020-10-15 03:25:34,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:34,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:34,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:34,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:35,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:35,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 03:25:35,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:25:35,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 762 [2020-10-15 03:25:35,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:35,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:25:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:25:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:25:35,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0