/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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:44:48,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:44:48,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:44:48,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:44:48,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:44:48,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:44:48,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:44:48,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:44:48,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:44:48,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:44:48,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:44:48,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:44:48,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:44:48,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:44:48,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:44:48,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:44:48,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:44:48,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:44:48,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:44:48,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:44:48,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:44:48,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:44:48,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:44:48,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:44:48,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:44:48,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:44:48,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:44:48,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:44:48,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:44:48,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:44:48,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:44:48,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:44:48,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:44:48,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:44:48,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:44:48,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:44:48,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:44:48,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:44:48,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:44:48,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:44:48,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:44:48,171 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 03:44:48,193 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:44:48,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:44:48,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:44:48,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:44:48,195 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:44:48,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:44:48,195 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:44:48,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:44:48,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:44:48,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:44:48,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:44:48,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:44:48,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:44:48,196 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:44:48,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:44:48,197 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:44:48,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:44:48,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:44:48,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:44:48,197 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:44:48,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:44:48,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:44:48,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:44:48,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:44:48,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:44:48,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:44:48,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:44:48,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:44:48,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:44:48,199 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 03:44:48,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:44:48,495 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:44:48,499 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:44:48,501 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:44:48,501 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:44:48,502 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-15 03:44:48,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6c568eee/b81c38de8024404bb1dfd4919c00130e/FLAG64ce3d5c0 [2020-10-15 03:44:49,096 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:44:49,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-15 03:44:49,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6c568eee/b81c38de8024404bb1dfd4919c00130e/FLAG64ce3d5c0 [2020-10-15 03:44:49,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6c568eee/b81c38de8024404bb1dfd4919c00130e [2020-10-15 03:44:49,415 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:44:49,418 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:44:49,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:44:49,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:44:49,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:44:49,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:44:49" (1/1) ... [2020-10-15 03:44:49,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e58bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:44:49, skipping insertion in model container [2020-10-15 03:44:49,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:44:49" (1/1) ... [2020-10-15 03:44:49,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:44:49,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:44:50,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:44:50,127 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:44:50,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:44:50,338 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:44:50,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:44:50 WrapperNode [2020-10-15 03:44:50,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:44:50,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:44:50,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:44:50,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:44:50,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:44:50" (1/1) ... [2020-10-15 03:44:50,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:44:50" (1/1) ... [2020-10-15 03:44:50,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:44:50" (1/1) ... [2020-10-15 03:44:50,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:44:50" (1/1) ... [2020-10-15 03:44:50,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:44:50" (1/1) ... [2020-10-15 03:44:50,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:44:50" (1/1) ... [2020-10-15 03:44:50,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:44:50" (1/1) ... [2020-10-15 03:44:50,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:44:50,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:44:50,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:44:50,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:44:50,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:44:50" (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 03:44:50,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:44:50,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:44:50,560 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:44:50,560 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:44:50,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:44:50,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:44:50,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:44:50,562 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:44:50,562 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:44:50,562 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:44:50,562 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:44:50,562 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:44:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:44:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:44:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:44:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:44:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:44:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:44:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:44:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:44:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:44:51,951 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:44:51,952 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:44:51,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:44:51 BoogieIcfgContainer [2020-10-15 03:44:51,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:44:51,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:44:51,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:44:51,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:44:51,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:44:49" (1/3) ... [2020-10-15 03:44:51,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5732fe68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:44:51, skipping insertion in model container [2020-10-15 03:44:51,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:44:50" (2/3) ... [2020-10-15 03:44:51,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5732fe68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:44:51, skipping insertion in model container [2020-10-15 03:44:51,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:44:51" (3/3) ... [2020-10-15 03:44:51,968 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-15 03:44:51,979 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:44:51,989 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:44:52,003 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:44:52,032 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:44:52,032 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:44:52,032 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:44:52,032 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:44:52,033 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:44:52,033 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:44:52,033 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:44:52,033 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:44:52,060 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states. [2020-10-15 03:44:52,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-15 03:44:52,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:52,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:44:52,080 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:52,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:52,087 INFO L82 PathProgramCache]: Analyzing trace with hash -941519177, now seen corresponding path program 1 times [2020-10-15 03:44:52,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:52,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874339808] [2020-10-15 03:44:52,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:52,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:52,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:52,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:53,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:53,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:53,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:53,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:53,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:53,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:55,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:57,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:57,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-15 03:44:57,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:44:57,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-15 03:44:57,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:57,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:44:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 03:44:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 03:44:57,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-15 03:44:57,752 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:44:57,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:57,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:57,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:57,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:57,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:57,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:44:57,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:57,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:57,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:44:57,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:57,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:44:57,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:44:57,844 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 03:44:57,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874339808] [2020-10-15 03:44:57,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:57,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:44:57,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960612442] [2020-10-15 03:44:57,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:44:57,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:57,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:44:57,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:44:57,881 INFO L87 Difference]: Start difference. First operand 429 states. Second operand 4 states. [2020-10-15 03:44:58,175 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-15 03:45:00,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:00,408 INFO L93 Difference]: Finished difference Result 1058 states and 1708 transitions. [2020-10-15 03:45:00,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:45:00,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-10-15 03:45:00,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:00,442 INFO L225 Difference]: With dead ends: 1058 [2020-10-15 03:45:00,442 INFO L226 Difference]: Without dead ends: 762 [2020-10-15 03:45:00,455 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 03:45:00,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2020-10-15 03:45:00,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 716. [2020-10-15 03:45:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 716 states. [2020-10-15 03:45:00,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1145 transitions. [2020-10-15 03:45:00,572 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1145 transitions. Word has length 111 [2020-10-15 03:45:00,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:00,572 INFO L479 AbstractCegarLoop]: Abstraction has 716 states and 1145 transitions. [2020-10-15 03:45:00,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:45:00,573 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1145 transitions. [2020-10-15 03:45:00,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 03:45:00,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:00,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:00,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:45:00,585 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:00,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:00,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1633208127, now seen corresponding path program 1 times [2020-10-15 03:45:00,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:00,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377756824] [2020-10-15 03:45:00,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:00,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:00,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:00,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:00,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:00,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:00,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:00,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:01,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:02,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:04,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:04,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:05,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:05,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-15 03:45:05,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:45:05,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-15 03:45:05,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:05,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:45:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 03:45:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 03:45:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:45:05,851 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:45:05,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:05,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:05,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:05,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:05,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:05,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:45:05,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:05,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:05,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:05,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:05,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:05,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:45:05,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377756824] [2020-10-15 03:45:05,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:05,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:45:05,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135158660] [2020-10-15 03:45:05,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:45:05,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:05,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:45:05,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:45:05,906 INFO L87 Difference]: Start difference. First operand 716 states and 1145 transitions. Second operand 4 states. [2020-10-15 03:45:06,058 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-15 03:45:07,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:07,873 INFO L93 Difference]: Finished difference Result 1770 states and 2814 transitions. [2020-10-15 03:45:07,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:45:07,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-10-15 03:45:07,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:07,883 INFO L225 Difference]: With dead ends: 1770 [2020-10-15 03:45:07,883 INFO L226 Difference]: Without dead ends: 1288 [2020-10-15 03:45:07,887 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 03:45:07,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2020-10-15 03:45:07,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1198. [2020-10-15 03:45:07,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2020-10-15 03:45:07,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1901 transitions. [2020-10-15 03:45:07,964 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1901 transitions. Word has length 113 [2020-10-15 03:45:07,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:07,965 INFO L479 AbstractCegarLoop]: Abstraction has 1198 states and 1901 transitions. [2020-10-15 03:45:07,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:45:07,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1901 transitions. [2020-10-15 03:45:07,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-15 03:45:07,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:07,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:07,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:45:07,973 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:07,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:07,973 INFO L82 PathProgramCache]: Analyzing trace with hash -283639639, now seen corresponding path program 1 times [2020-10-15 03:45:07,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:07,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89093770] [2020-10-15 03:45:07,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:08,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:08,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:08,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:08,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:08,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:08,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:08,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:09,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:09,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:13,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:13,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-15 03:45:13,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:45:13,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 03:45:13,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:13,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:13,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:45:13,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 03:45:13,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 03:45:13,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:13,244 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:45:13,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:13,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:13,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:13,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:13,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:13,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 03:45:13,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:13,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:13,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:13,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:13,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:13,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:13,315 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 03:45:13,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89093770] [2020-10-15 03:45:13,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:13,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:45:13,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838872575] [2020-10-15 03:45:13,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:45:13,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:13,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:45:13,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:45:13,318 INFO L87 Difference]: Start difference. First operand 1198 states and 1901 transitions. Second operand 4 states. [2020-10-15 03:45:13,453 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-15 03:45:15,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:15,318 INFO L93 Difference]: Finished difference Result 3212 states and 5070 transitions. [2020-10-15 03:45:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:45:15,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-10-15 03:45:15,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:15,330 INFO L225 Difference]: With dead ends: 3212 [2020-10-15 03:45:15,330 INFO L226 Difference]: Without dead ends: 2266 [2020-10-15 03:45:15,333 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 03:45:15,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2266 states. [2020-10-15 03:45:15,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2266 to 2088. [2020-10-15 03:45:15,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2088 states. [2020-10-15 03:45:15,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 3284 transitions. [2020-10-15 03:45:15,444 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 3284 transitions. Word has length 115 [2020-10-15 03:45:15,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:15,445 INFO L479 AbstractCegarLoop]: Abstraction has 2088 states and 3284 transitions. [2020-10-15 03:45:15,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:45:15,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 3284 transitions. [2020-10-15 03:45:15,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-15 03:45:15,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:15,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:15,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:45:15,452 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:15,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:15,453 INFO L82 PathProgramCache]: Analyzing trace with hash 284690433, now seen corresponding path program 1 times [2020-10-15 03:45:15,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:15,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471856245] [2020-10-15 03:45:15,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:15,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:15,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:15,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:15,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:15,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:15,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:17,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:20,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:20,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-15 03:45:20,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:45:20,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 03:45:20,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:20,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:20,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:45:20,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 03:45:20,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 03:45:20,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:20,786 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:45:20,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:20,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:20,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:20,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:20,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:20,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:45:20,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:20,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:20,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:20,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:20,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:20,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:20,852 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 03:45:20,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471856245] [2020-10-15 03:45:20,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:20,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:45:20,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127821009] [2020-10-15 03:45:20,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:45:20,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:20,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:45:20,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:45:20,857 INFO L87 Difference]: Start difference. First operand 2088 states and 3284 transitions. Second operand 4 states. [2020-10-15 03:45:21,038 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-15 03:45:22,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:22,990 INFO L93 Difference]: Finished difference Result 5108 states and 7978 transitions. [2020-10-15 03:45:22,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:45:22,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-10-15 03:45:22,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:23,011 INFO L225 Difference]: With dead ends: 5108 [2020-10-15 03:45:23,011 INFO L226 Difference]: Without dead ends: 3714 [2020-10-15 03:45:23,015 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 03:45:23,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2020-10-15 03:45:23,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3360. [2020-10-15 03:45:23,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3360 states. [2020-10-15 03:45:23,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3360 states to 3360 states and 5212 transitions. [2020-10-15 03:45:23,199 INFO L78 Accepts]: Start accepts. Automaton has 3360 states and 5212 transitions. Word has length 117 [2020-10-15 03:45:23,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:23,202 INFO L479 AbstractCegarLoop]: Abstraction has 3360 states and 5212 transitions. [2020-10-15 03:45:23,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:45:23,202 INFO L276 IsEmpty]: Start isEmpty. Operand 3360 states and 5212 transitions. [2020-10-15 03:45:23,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 03:45:23,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:23,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:23,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:45:23,213 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:23,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:23,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1487816421, now seen corresponding path program 1 times [2020-10-15 03:45:23,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:23,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781258290] [2020-10-15 03:45:23,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:23,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:23,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:23,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:23,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:24,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:28,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:28,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 03:45:28,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:45:28,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:45:28,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:28,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:45:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-15 03:45:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:45:28,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:28,466 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:45:28,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:28,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:28,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:28,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:28,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:28,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:45:28,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:28,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:28,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:28,533 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 03:45:28,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781258290] [2020-10-15 03:45:28,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:28,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:45:28,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049952257] [2020-10-15 03:45:28,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:45:28,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:28,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:45:28,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:45:28,539 INFO L87 Difference]: Start difference. First operand 3360 states and 5212 transitions. Second operand 5 states. [2020-10-15 03:45:30,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:30,195 INFO L93 Difference]: Finished difference Result 4882 states and 7549 transitions. [2020-10-15 03:45:30,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:45:30,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-15 03:45:30,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:30,214 INFO L225 Difference]: With dead ends: 4882 [2020-10-15 03:45:30,214 INFO L226 Difference]: Without dead ends: 3360 [2020-10-15 03:45:30,219 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 03:45:30,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2020-10-15 03:45:30,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 3360. [2020-10-15 03:45:30,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3360 states. [2020-10-15 03:45:30,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3360 states to 3360 states and 5180 transitions. [2020-10-15 03:45:30,355 INFO L78 Accepts]: Start accepts. Automaton has 3360 states and 5180 transitions. Word has length 119 [2020-10-15 03:45:30,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:30,356 INFO L479 AbstractCegarLoop]: Abstraction has 3360 states and 5180 transitions. [2020-10-15 03:45:30,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:45:30,356 INFO L276 IsEmpty]: Start isEmpty. Operand 3360 states and 5180 transitions. [2020-10-15 03:45:30,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:45:30,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:30,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:30,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:45:30,365 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:30,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:30,366 INFO L82 PathProgramCache]: Analyzing trace with hash 428118555, now seen corresponding path program 1 times [2020-10-15 03:45:30,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:30,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752589119] [2020-10-15 03:45:30,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:30,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:30,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:30,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:30,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:30,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:30,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:31,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:33,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:34,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:34,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:45:34,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:45:34,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4459 [2020-10-15 03:45:34,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:34,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:34,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:45:34,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 03:45:34,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 03:45:34,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:35,001 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:45:35,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:35,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:35,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:35,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:35,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:35,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:45:35,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:35,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:35,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:35,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:35,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:35,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:35,046 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 03:45:35,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752589119] [2020-10-15 03:45:35,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:35,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:45:35,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698613647] [2020-10-15 03:45:35,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:45:35,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:35,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:45:35,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:45:35,049 INFO L87 Difference]: Start difference. First operand 3360 states and 5180 transitions. Second operand 4 states. [2020-10-15 03:45:36,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:36,839 INFO L93 Difference]: Finished difference Result 7812 states and 11950 transitions. [2020-10-15 03:45:36,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:45:36,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-15 03:45:36,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:36,863 INFO L225 Difference]: With dead ends: 7812 [2020-10-15 03:45:36,863 INFO L226 Difference]: Without dead ends: 5275 [2020-10-15 03:45:36,871 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 03:45:36,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5275 states. [2020-10-15 03:45:37,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5275 to 5273. [2020-10-15 03:45:37,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5273 states. [2020-10-15 03:45:37,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5273 states to 5273 states and 7995 transitions. [2020-10-15 03:45:37,106 INFO L78 Accepts]: Start accepts. Automaton has 5273 states and 7995 transitions. Word has length 120 [2020-10-15 03:45:37,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:37,108 INFO L479 AbstractCegarLoop]: Abstraction has 5273 states and 7995 transitions. [2020-10-15 03:45:37,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:45:37,108 INFO L276 IsEmpty]: Start isEmpty. Operand 5273 states and 7995 transitions. [2020-10-15 03:45:37,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-15 03:45:37,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:37,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:37,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:45:37,119 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:37,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:37,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1681717215, now seen corresponding path program 1 times [2020-10-15 03:45:37,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:37,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545135524] [2020-10-15 03:45:37,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:37,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:37,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:37,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:37,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:37,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:37,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:38,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:38,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:38,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:38,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-15 03:45:38,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:45:38,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1151 [2020-10-15 03:45:38,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:38,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:38,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:45:38,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 03:45:38,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-15 03:45:38,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:38,451 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:45:38,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:38,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:38,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:38,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:38,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:38,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:45:38,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:38,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:38,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:38,507 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 03:45:38,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545135524] [2020-10-15 03:45:38,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:38,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:45:38,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446581889] [2020-10-15 03:45:38,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:45:38,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:38,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:45:38,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:45:38,509 INFO L87 Difference]: Start difference. First operand 5273 states and 7995 transitions. Second operand 4 states. [2020-10-15 03:45:38,667 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:45:40,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:40,872 INFO L93 Difference]: Finished difference Result 9926 states and 14988 transitions. [2020-10-15 03:45:40,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:45:40,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-15 03:45:40,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:40,896 INFO L225 Difference]: With dead ends: 9926 [2020-10-15 03:45:40,896 INFO L226 Difference]: Without dead ends: 6813 [2020-10-15 03:45:40,904 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 03:45:40,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6813 states. [2020-10-15 03:45:41,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6813 to 6419. [2020-10-15 03:45:41,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6419 states. [2020-10-15 03:45:41,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6419 states to 6419 states and 9695 transitions. [2020-10-15 03:45:41,172 INFO L78 Accepts]: Start accepts. Automaton has 6419 states and 9695 transitions. Word has length 122 [2020-10-15 03:45:41,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:41,173 INFO L479 AbstractCegarLoop]: Abstraction has 6419 states and 9695 transitions. [2020-10-15 03:45:41,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:45:41,173 INFO L276 IsEmpty]: Start isEmpty. Operand 6419 states and 9695 transitions. [2020-10-15 03:45:41,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-15 03:45:41,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:41,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:41,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:45:41,187 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:41,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:41,187 INFO L82 PathProgramCache]: Analyzing trace with hash -373444021, now seen corresponding path program 1 times [2020-10-15 03:45:41,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:41,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35448745] [2020-10-15 03:45:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:41,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:41,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:41,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:41,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-15 03:45:41,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:45:41,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-10-15 03:45:41,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:41,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:41,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:45:41,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:45:41,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:45:41,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:42,037 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:45:42,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:42,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:42,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:42,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:42,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:42,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:45:42,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:42,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:42,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:42,071 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 03:45:42,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35448745] [2020-10-15 03:45:42,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:42,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:45:42,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705568188] [2020-10-15 03:45:42,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:45:42,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:42,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:45:42,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:45:42,083 INFO L87 Difference]: Start difference. First operand 6419 states and 9695 transitions. Second operand 5 states. [2020-10-15 03:45:43,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:43,726 INFO L93 Difference]: Finished difference Result 12808 states and 19336 transitions. [2020-10-15 03:45:43,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:45:43,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-15 03:45:43,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:43,748 INFO L225 Difference]: With dead ends: 12808 [2020-10-15 03:45:43,749 INFO L226 Difference]: Without dead ends: 6419 [2020-10-15 03:45:43,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:45:43,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6419 states. [2020-10-15 03:45:44,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6419 to 6419. [2020-10-15 03:45:44,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6419 states. [2020-10-15 03:45:44,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6419 states to 6419 states and 9671 transitions. [2020-10-15 03:45:44,032 INFO L78 Accepts]: Start accepts. Automaton has 6419 states and 9671 transitions. Word has length 124 [2020-10-15 03:45:44,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:44,032 INFO L479 AbstractCegarLoop]: Abstraction has 6419 states and 9671 transitions. [2020-10-15 03:45:44,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:45:44,032 INFO L276 IsEmpty]: Start isEmpty. Operand 6419 states and 9671 transitions. [2020-10-15 03:45:44,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-15 03:45:44,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:44,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:44,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:45:44,046 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:44,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:44,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1326783306, now seen corresponding path program 1 times [2020-10-15 03:45:44,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:44,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211642734] [2020-10-15 03:45:44,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:44,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:44,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:44,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:44,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:44,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:44,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:44,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:44,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:45,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:45,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:45,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:45,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:45,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:45,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:45,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:45,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:46,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:46,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:46,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:46,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:49,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:49,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-15 03:45:49,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-15 03:45:49,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:45:49,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:49,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:49,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:45:49,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:45:49,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-15 03:45:49,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:45:49,318 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:45:49,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:49,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:49,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:49,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:49,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:49,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:45:49,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:49,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:49,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:49,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:49,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:49,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:49,413 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 03:45:49,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211642734] [2020-10-15 03:45:49,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:49,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:45:49,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98542071] [2020-10-15 03:45:49,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:45:49,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:49,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:45:49,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:45:49,415 INFO L87 Difference]: Start difference. First operand 6419 states and 9671 transitions. Second operand 7 states. [2020-10-15 03:45:53,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:45:53,190 INFO L93 Difference]: Finished difference Result 27112 states and 40371 transitions. [2020-10-15 03:45:53,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:45:53,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-10-15 03:45:53,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:45:53,232 INFO L225 Difference]: With dead ends: 27112 [2020-10-15 03:45:53,232 INFO L226 Difference]: Without dead ends: 20939 [2020-10-15 03:45:53,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:45:53,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20939 states. [2020-10-15 03:45:54,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20939 to 20167. [2020-10-15 03:45:54,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20167 states. [2020-10-15 03:45:54,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20167 states to 20167 states and 29915 transitions. [2020-10-15 03:45:54,268 INFO L78 Accepts]: Start accepts. Automaton has 20167 states and 29915 transitions. Word has length 147 [2020-10-15 03:45:54,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:54,268 INFO L479 AbstractCegarLoop]: Abstraction has 20167 states and 29915 transitions. [2020-10-15 03:45:54,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:45:54,268 INFO L276 IsEmpty]: Start isEmpty. Operand 20167 states and 29915 transitions. [2020-10-15 03:45:54,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-15 03:45:54,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:54,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:54,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:45:54,296 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:54,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:54,296 INFO L82 PathProgramCache]: Analyzing trace with hash 117041241, now seen corresponding path program 1 times [2020-10-15 03:45:54,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:54,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106128666] [2020-10-15 03:45:54,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:54,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:54,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:54,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:54,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:54,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:54,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:54,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:54,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:55,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:56,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:56,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:56,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:56,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:56,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:59,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:59,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-15 03:45:59,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:45:59,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:45:59,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:59,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:59,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:45:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:45:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-15 03:45:59,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:59,512 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:45:59,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:59,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:59,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:59,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:59,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:59,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:45:59,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:59,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:59,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:45:59,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:59,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:45:59,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:59,558 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 03:45:59,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106128666] [2020-10-15 03:45:59,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:59,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:45:59,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274509082] [2020-10-15 03:45:59,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:45:59,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:59,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:45:59,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:45:59,559 INFO L87 Difference]: Start difference. First operand 20167 states and 29915 transitions. Second operand 6 states. [2020-10-15 03:45:59,830 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-15 03:46:04,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:46:04,551 INFO L93 Difference]: Finished difference Result 51807 states and 76863 transitions. [2020-10-15 03:46:04,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:46:04,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2020-10-15 03:46:04,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:46:04,655 INFO L225 Difference]: With dead ends: 51807 [2020-10-15 03:46:04,656 INFO L226 Difference]: Without dead ends: 39587 [2020-10-15 03:46:04,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:46:04,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39587 states. [2020-10-15 03:46:07,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39587 to 39585. [2020-10-15 03:46:07,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39585 states. [2020-10-15 03:46:07,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39585 states to 39585 states and 58559 transitions. [2020-10-15 03:46:07,290 INFO L78 Accepts]: Start accepts. Automaton has 39585 states and 58559 transitions. Word has length 150 [2020-10-15 03:46:07,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:46:07,290 INFO L479 AbstractCegarLoop]: Abstraction has 39585 states and 58559 transitions. [2020-10-15 03:46:07,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:46:07,290 INFO L276 IsEmpty]: Start isEmpty. Operand 39585 states and 58559 transitions. [2020-10-15 03:46:07,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-15 03:46:07,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:46:07,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:46:07,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:46:07,335 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:46:07,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:46:07,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1678883540, now seen corresponding path program 1 times [2020-10-15 03:46:07,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:46:07,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359978880] [2020-10-15 03:46:07,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:46:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:07,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:07,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:07,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:07,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:07,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:07,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:07,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:07,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:08,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:11,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:11,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:12,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:12,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:12,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-15 03:46:12,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:46:12,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 03:46:12,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:12,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:12,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:46:12,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:46:12,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-15 03:46:12,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:12,580 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:46:12,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:12,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:12,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:12,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:12,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:12,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:46:12,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:12,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:12,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:46:12,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:12,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:46:12,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:12,679 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 03:46:12,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359978880] [2020-10-15 03:46:12,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:46:12,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:46:12,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913731766] [2020-10-15 03:46:12,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:46:12,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:12,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:46:12,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:46:12,681 INFO L87 Difference]: Start difference. First operand 39585 states and 58559 transitions. Second operand 7 states. [2020-10-15 03:46:19,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:46:19,333 INFO L93 Difference]: Finished difference Result 93955 states and 138338 transitions. [2020-10-15 03:46:19,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:46:19,334 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2020-10-15 03:46:19,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:46:19,469 INFO L225 Difference]: With dead ends: 93955 [2020-10-15 03:46:19,470 INFO L226 Difference]: Without dead ends: 73735 [2020-10-15 03:46:19,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:46:19,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73735 states. [2020-10-15 03:46:22,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73735 to 55823. [2020-10-15 03:46:22,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55823 states. [2020-10-15 03:46:22,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55823 states to 55823 states and 82455 transitions. [2020-10-15 03:46:22,515 INFO L78 Accepts]: Start accepts. Automaton has 55823 states and 82455 transitions. Word has length 150 [2020-10-15 03:46:22,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:46:22,516 INFO L479 AbstractCegarLoop]: Abstraction has 55823 states and 82455 transitions. [2020-10-15 03:46:22,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:46:22,516 INFO L276 IsEmpty]: Start isEmpty. Operand 55823 states and 82455 transitions. [2020-10-15 03:46:22,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-15 03:46:22,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:46:22,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:46:22,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:46:22,584 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:46:22,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:46:22,584 INFO L82 PathProgramCache]: Analyzing trace with hash 285022891, now seen corresponding path program 1 times [2020-10-15 03:46:22,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:46:22,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107226308] [2020-10-15 03:46:22,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:46:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:22,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:22,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:22,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:22,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:22,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:22,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:22,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:23,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:24,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:24,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:24,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:24,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:24,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:25,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:27,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:27,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-15 03:46:27,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:46:27,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:46:27,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:27,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:46:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:46:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-15 03:46:27,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:27,775 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:46:27,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:27,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:27,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:27,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:27,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:27,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:46:27,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:27,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:27,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:46:27,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:27,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:46:27,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:27,821 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 03:46:27,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107226308] [2020-10-15 03:46:27,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:46:27,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:46:27,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128419482] [2020-10-15 03:46:27,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:46:27,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:27,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:46:27,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:46:27,823 INFO L87 Difference]: Start difference. First operand 55823 states and 82455 transitions. Second operand 6 states. [2020-10-15 03:46:27,997 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-15 03:46:35,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:46:35,999 INFO L93 Difference]: Finished difference Result 141354 states and 208818 transitions. [2020-10-15 03:46:35,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:46:35,999 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2020-10-15 03:46:36,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:46:36,170 INFO L225 Difference]: With dead ends: 141354 [2020-10-15 03:46:36,170 INFO L226 Difference]: Without dead ends: 108004 [2020-10-15 03:46:36,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:46:36,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108004 states. [2020-10-15 03:46:44,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108004 to 108002. [2020-10-15 03:46:44,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108002 states. [2020-10-15 03:46:44,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108002 states to 108002 states and 159216 transitions. [2020-10-15 03:46:44,491 INFO L78 Accepts]: Start accepts. Automaton has 108002 states and 159216 transitions. Word has length 150 [2020-10-15 03:46:44,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:46:44,492 INFO L479 AbstractCegarLoop]: Abstraction has 108002 states and 159216 transitions. [2020-10-15 03:46:44,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:46:44,492 INFO L276 IsEmpty]: Start isEmpty. Operand 108002 states and 159216 transitions. [2020-10-15 03:46:44,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-15 03:46:44,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:46:44,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:46:44,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:46:44,586 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:46:44,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:46:44,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1641781424, now seen corresponding path program 1 times [2020-10-15 03:46:44,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:46:44,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426759136] [2020-10-15 03:46:44,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:46:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:44,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:44,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:44,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:44,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:44,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:44,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:44,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:44,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:45,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:45,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:45,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:45,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:49,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:49,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-15 03:46:49,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:46:49,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:46:49,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:49,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:49,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:46:49,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:46:49,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 03:46:49,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:49,825 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:46:49,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:46:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:46:49,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:46:49,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:46:49,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:46:49,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:46:49,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:46:49,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:46:49,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:46:49,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:46:49,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:46:49,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:46:49,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:46:49,902 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 03:46:49,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426759136] [2020-10-15 03:46:49,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:46:49,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:46:49,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074153144] [2020-10-15 03:46:49,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:46:49,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:46:49,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:46:49,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:46:49,903 INFO L87 Difference]: Start difference. First operand 108002 states and 159216 transitions. Second operand 7 states. [2020-10-15 03:47:03,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:47:03,780 INFO L93 Difference]: Finished difference Result 227312 states and 332577 transitions. [2020-10-15 03:47:03,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:47:03,781 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2020-10-15 03:47:03,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:47:04,087 INFO L225 Difference]: With dead ends: 227312 [2020-10-15 03:47:04,087 INFO L226 Difference]: Without dead ends: 178934 [2020-10-15 03:47:04,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:47:04,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178934 states. [2020-10-15 03:47:12,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178934 to 133941. [2020-10-15 03:47:12,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133941 states. [2020-10-15 03:47:12,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133941 states to 133941 states and 194127 transitions. [2020-10-15 03:47:12,751 INFO L78 Accepts]: Start accepts. Automaton has 133941 states and 194127 transitions. Word has length 150 [2020-10-15 03:47:12,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:47:12,751 INFO L479 AbstractCegarLoop]: Abstraction has 133941 states and 194127 transitions. [2020-10-15 03:47:12,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:47:12,751 INFO L276 IsEmpty]: Start isEmpty. Operand 133941 states and 194127 transitions. [2020-10-15 03:47:12,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-15 03:47:12,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:47:12,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:47:12,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:47:12,883 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:47:12,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:47:12,884 INFO L82 PathProgramCache]: Analyzing trace with hash -386894636, now seen corresponding path program 1 times [2020-10-15 03:47:12,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:47:12,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700172649] [2020-10-15 03:47:12,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:47:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:12,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:12,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:12,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:12,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:13,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:13,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:13,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:13,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:14,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:14,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:14,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:14,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:19,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:19,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-15 03:47:19,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:47:19,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6193 [2020-10-15 03:47:19,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:19,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:47:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:47:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 03:47:19,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:47:19,287 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:47:19,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:47:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:19,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:19,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:19,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:47:19,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:47:19,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:47:19,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:19,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:19,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:47:19,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:47:19,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:47:19,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:47:19,364 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 03:47:19,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700172649] [2020-10-15 03:47:19,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:47:19,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:47:19,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917655992] [2020-10-15 03:47:19,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:47:19,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:47:19,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:47:19,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:47:19,365 INFO L87 Difference]: Start difference. First operand 133941 states and 194127 transitions. Second operand 7 states. [2020-10-15 03:47:34,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:47:34,226 INFO L93 Difference]: Finished difference Result 262610 states and 377745 transitions. [2020-10-15 03:47:34,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:47:34,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2020-10-15 03:47:34,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:47:34,441 INFO L225 Difference]: With dead ends: 262610 [2020-10-15 03:47:34,441 INFO L226 Difference]: Without dead ends: 193764 [2020-10-15 03:47:34,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:47:34,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193764 states. [2020-10-15 03:47:49,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193764 to 164433. [2020-10-15 03:47:49,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164433 states. [2020-10-15 03:47:49,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164433 states to 164433 states and 237261 transitions. [2020-10-15 03:47:49,581 INFO L78 Accepts]: Start accepts. Automaton has 164433 states and 237261 transitions. Word has length 150 [2020-10-15 03:47:49,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:47:49,581 INFO L479 AbstractCegarLoop]: Abstraction has 164433 states and 237261 transitions. [2020-10-15 03:47:49,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:47:49,581 INFO L276 IsEmpty]: Start isEmpty. Operand 164433 states and 237261 transitions. [2020-10-15 03:47:49,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-15 03:47:49,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:47:49,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:47:49,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:47:49,722 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:47:49,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:47:49,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1034051192, now seen corresponding path program 1 times [2020-10-15 03:47:49,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:47:49,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153459697] [2020-10-15 03:47:49,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:47:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:49,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:49,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:49,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:49,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:49,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:50,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:52,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:54,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:54,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-15 03:47:54,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:47:54,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:47:54,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:54,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:47:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:47:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-15 03:47:54,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:47:54,937 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:47:54,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:47:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:47:54,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:47:54,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:47:54,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:47:54,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:47:54,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:47:54,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:47:54,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:47:54,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:47:54,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:47:54,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:47:54,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:47:55,125 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 03:47:55,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153459697] [2020-10-15 03:47:55,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:47:55,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:47:55,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297727698] [2020-10-15 03:47:55,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:47:55,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:47:55,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:47:55,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:47:55,126 INFO L87 Difference]: Start difference. First operand 164433 states and 237261 transitions. Second operand 6 states. [2020-10-15 03:47:55,296 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:48:12,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:48:12,880 INFO L93 Difference]: Finished difference Result 374323 states and 538341 transitions. [2020-10-15 03:48:12,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:48:12,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-10-15 03:48:12,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:48:13,156 INFO L225 Difference]: With dead ends: 374323 [2020-10-15 03:48:13,157 INFO L226 Difference]: Without dead ends: 245696 [2020-10-15 03:48:13,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:48:13,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245696 states.