/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:22:38,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:22:38,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:22:38,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:22:38,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:22:38,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:22:38,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:22:38,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:22:38,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:22:38,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:22:38,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:22:38,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:22:38,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:22:38,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:22:38,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:22:38,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:22:38,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:22:38,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:22:38,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:22:38,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:22:38,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:22:38,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:22:38,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:22:38,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:22:38,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:22:38,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:22:38,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:22:38,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:22:38,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:22:38,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:22:38,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:22:38,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:22:38,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:22:38,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:22:38,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:22:38,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:22:38,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:22:38,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:22:38,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:22:38,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:22:38,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:22:38,757 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 [2020-10-13 23:22:38,795 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:22:38,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:22:38,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:22:38,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:22:38,798 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:22:38,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:22:38,798 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:22:38,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:22:38,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:22:38,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:22:38,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:22:38,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:22:38,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:22:38,801 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:22:38,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:22:38,801 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:22:38,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:22:38,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:22:38,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:22:38,802 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:22:38,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:22:38,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:22:38,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:22:38,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:22:38,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:22:38,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:22:38,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:22:38,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:22:38,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:22:38,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-13 23:22:39,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:22:39,114 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:22:39,118 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:22:39,119 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:22:39,119 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:22:39,120 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m5.c [2020-10-13 23:22:39,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6886aee01/3f6f73e105b34c48b0a81969d520048d/FLAG7cdafb158 [2020-10-13 23:22:39,635 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:22:39,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/zero_sum_const_m5.c [2020-10-13 23:22:39,643 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6886aee01/3f6f73e105b34c48b0a81969d520048d/FLAG7cdafb158 [2020-10-13 23:22:40,015 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6886aee01/3f6f73e105b34c48b0a81969d520048d [2020-10-13 23:22:40,024 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:22:40,026 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:22:40,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:22:40,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:22:40,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:22:40,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:22:40" (1/1) ... [2020-10-13 23:22:40,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b8ea72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:40, skipping insertion in model container [2020-10-13 23:22:40,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:22:40" (1/1) ... [2020-10-13 23:22:40,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:22:40,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:22:40,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:22:40,295 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:22:40,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:22:40,433 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:22:40,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:40 WrapperNode [2020-10-13 23:22:40,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:22:40,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:22:40,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:22:40,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:22:40,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:40" (1/1) ... [2020-10-13 23:22:40,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:40" (1/1) ... [2020-10-13 23:22:40,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:40" (1/1) ... [2020-10-13 23:22:40,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:40" (1/1) ... [2020-10-13 23:22:40,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:40" (1/1) ... [2020-10-13 23:22:40,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:40" (1/1) ... [2020-10-13 23:22:40,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:40" (1/1) ... [2020-10-13 23:22:40,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:22:40,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:22:40,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:22:40,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:22:40,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:40" (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 [2020-10-13 23:22:40,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:22:40,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:22:40,541 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 23:22:40,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:22:40,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:22:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:22:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 23:22:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 23:22:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:22:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-13 23:22:40,543 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 23:22:40,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:22:40,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 23:22:40,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:22:40,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:22:40,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:22:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:22:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:22:40,886 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:22:40,887 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-13 23:22:40,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:22:40 BoogieIcfgContainer [2020-10-13 23:22:40,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:22:40,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:22:40,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:22:40,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:22:40,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:22:40" (1/3) ... [2020-10-13 23:22:40,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6213bc59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:22:40, skipping insertion in model container [2020-10-13 23:22:40,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:40" (2/3) ... [2020-10-13 23:22:40,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6213bc59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:22:40, skipping insertion in model container [2020-10-13 23:22:40,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:22:40" (3/3) ... [2020-10-13 23:22:40,900 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum_const_m5.c [2020-10-13 23:22:40,911 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:22:40,918 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:22:40,934 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:22:40,960 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:22:40,961 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:22:40,961 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:22:40,961 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:22:40,961 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:22:40,961 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:22:40,962 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:22:40,962 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:22:40,985 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-10-13 23:22:40,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 23:22:40,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:22:40,999 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] [2020-10-13 23:22:41,000 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:22:41,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:22:41,005 INFO L82 PathProgramCache]: Analyzing trace with hash -449577023, now seen corresponding path program 1 times [2020-10-13 23:22:41,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:22:41,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862093874] [2020-10-13 23:22:41,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:22:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:41,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:41,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:41,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:41,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:41,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:41,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:41,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:41,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:41,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:42,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:43,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:43,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:44,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:44,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:22:44,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 23:22:44,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3266 [2020-10-13 23:22:44,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:44,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:44,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:44,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:22:44,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:44,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 23:22:44,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:22:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:44,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:44,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:44,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:22:44,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:22:44,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 23:22:44,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:44,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:44,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:44,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:44,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:44,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:22:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:22:44,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862093874] [2020-10-13 23:22:44,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:22:44,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:22:44,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005254935] [2020-10-13 23:22:44,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:22:44,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:22:44,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:22:44,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:22:44,568 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2020-10-13 23:22:44,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:22:44,759 INFO L93 Difference]: Finished difference Result 93 states and 137 transitions. [2020-10-13 23:22:44,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:22:44,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 23:22:44,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:22:44,770 INFO L225 Difference]: With dead ends: 93 [2020-10-13 23:22:44,770 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 23:22:44,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:22:44,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 23:22:44,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-13 23:22:44,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 23:22:44,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2020-10-13 23:22:44,821 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 32 [2020-10-13 23:22:44,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:22:44,821 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2020-10-13 23:22:44,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:22:44,822 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2020-10-13 23:22:44,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 23:22:44,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:22:44,823 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] [2020-10-13 23:22:44,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:22:44,824 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:22:44,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:22:44,825 INFO L82 PathProgramCache]: Analyzing trace with hash -860066781, now seen corresponding path program 1 times [2020-10-13 23:22:44,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:22:44,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468536727] [2020-10-13 23:22:44,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:22:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:44,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:44,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:44,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:44,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:44,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:44,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:44,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:44,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:45,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:45,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:48,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:49,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:49,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:22:49,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 23:22:49,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 23:22:49,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:49,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:22:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:22:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:22:49,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 23:22:49,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:22:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:49,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:49,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:49,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:22:49,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:22:49,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:22:49,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:49,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:49,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:49,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:49,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:49,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:22:49,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:22:49,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468536727] [2020-10-13 23:22:49,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:22:49,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:22:49,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290909779] [2020-10-13 23:22:49,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:22:49,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:22:49,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:22:49,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:22:49,909 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand 4 states. [2020-10-13 23:22:50,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:22:50,064 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2020-10-13 23:22:50,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:22:50,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 23:22:50,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:22:50,066 INFO L225 Difference]: With dead ends: 81 [2020-10-13 23:22:50,066 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 23:22:50,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:22:50,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 23:22:50,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 23:22:50,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 23:22:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2020-10-13 23:22:50,075 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 32 [2020-10-13 23:22:50,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:22:50,076 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2020-10-13 23:22:50,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:22:50,076 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2020-10-13 23:22:50,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-13 23:22:50,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:22:50,078 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] [2020-10-13 23:22:50,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:22:50,078 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:22:50,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:22:50,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1264746561, now seen corresponding path program 1 times [2020-10-13 23:22:50,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:22:50,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64667894] [2020-10-13 23:22:50,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:22:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:50,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:50,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:50,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:50,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:50,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:50,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:50,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:50,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:50,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:52,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:55,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:55,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 23:22:55,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 23:22:55,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:22:55,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:55,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:55,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:22:55,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:22:55,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:22:55,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:22:55,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:22:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:55,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:55,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:55,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:22:55,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:22:55,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:22:55,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:55,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:55,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:55,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:55,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:55,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:22:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 23:22:55,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64667894] [2020-10-13 23:22:55,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:22:55,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 23:22:55,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174319880] [2020-10-13 23:22:55,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:22:55,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:22:55,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:22:55,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:22:55,134 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 5 states. [2020-10-13 23:22:55,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:22:55,341 INFO L93 Difference]: Finished difference Result 98 states and 126 transitions. [2020-10-13 23:22:55,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:22:55,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-13 23:22:55,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:22:55,344 INFO L225 Difference]: With dead ends: 98 [2020-10-13 23:22:55,344 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 23:22:55,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:22:55,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 23:22:55,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 55. [2020-10-13 23:22:55,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 23:22:55,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-13 23:22:55,355 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 34 [2020-10-13 23:22:55,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:22:55,355 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-13 23:22:55,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:22:55,355 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-13 23:22:55,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 23:22:55,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:22:55,358 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] [2020-10-13 23:22:55,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:22:55,360 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:22:55,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:22:55,361 INFO L82 PathProgramCache]: Analyzing trace with hash 253867821, now seen corresponding path program 1 times [2020-10-13 23:22:55,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:22:55,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738924892] [2020-10-13 23:22:55,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:22:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:55,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:55,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:55,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:55,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:55,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:55,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:55,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:56,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:00,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:00,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 23:23:00,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 23:23:00,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:23:00,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:00,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:23:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:23:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:23:00,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:23:00,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:23:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:00,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:00,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:00,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:23:00,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:23:00,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:23:00,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:00,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:23:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:23:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:23:00,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:23:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 23:23:00,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738924892] [2020-10-13 23:23:00,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:23:00,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:23:00,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408621624] [2020-10-13 23:23:00,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:23:00,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:23:00,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:23:00,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:23:00,456 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 6 states. [2020-10-13 23:23:00,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:23:00,736 INFO L93 Difference]: Finished difference Result 122 states and 152 transitions. [2020-10-13 23:23:00,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:23:00,737 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-13 23:23:00,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:23:00,739 INFO L225 Difference]: With dead ends: 122 [2020-10-13 23:23:00,739 INFO L226 Difference]: Without dead ends: 77 [2020-10-13 23:23:00,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:23:00,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-13 23:23:00,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-13 23:23:00,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 23:23:00,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2020-10-13 23:23:00,758 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 54 [2020-10-13 23:23:00,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:23:00,758 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2020-10-13 23:23:00,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:23:00,758 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2020-10-13 23:23:00,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 23:23:00,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:23:00,765 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:23:00,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:23:00,766 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:23:00,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:23:00,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1195572919, now seen corresponding path program 2 times [2020-10-13 23:23:00,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:23:00,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227726143] [2020-10-13 23:23:00,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:23:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:00,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:01,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:02,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:04,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:05,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:06,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:06,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 23:23:06,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:23:06,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5477 [2020-10-13 23:23:06,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:06,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:06,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-13 23:23:06,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:23:06,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 23:23:06,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:23:09,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:23:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:09,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:09,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:09,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:23:09,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:23:09,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:23:09,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:09,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:09,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:23:09,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:23:09,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:23:09,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:23:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:23:09,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227726143] [2020-10-13 23:23:09,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:23:09,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-13 23:23:09,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522876057] [2020-10-13 23:23:09,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-13 23:23:09,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:23:09,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-13 23:23:09,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2107, Unknown=0, NotChecked=0, Total=2256 [2020-10-13 23:23:09,902 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 48 states. [2020-10-13 23:23:10,279 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-10-13 23:23:11,261 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-10-13 23:23:12,572 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-10-13 23:23:13,817 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2020-10-13 23:23:14,257 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-10-13 23:23:14,696 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-13 23:23:17,247 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-13 23:23:19,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:23:19,565 INFO L93 Difference]: Finished difference Result 218 states and 250 transitions. [2020-10-13 23:23:19,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-13 23:23:19,565 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 76 [2020-10-13 23:23:19,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:23:19,569 INFO L225 Difference]: With dead ends: 218 [2020-10-13 23:23:19,569 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 23:23:19,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=373, Invalid=6433, Unknown=0, NotChecked=0, Total=6806 [2020-10-13 23:23:19,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 23:23:19,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 162. [2020-10-13 23:23:19,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-13 23:23:19,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 189 transitions. [2020-10-13 23:23:19,596 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 189 transitions. Word has length 76 [2020-10-13 23:23:19,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:23:19,596 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 189 transitions. [2020-10-13 23:23:19,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-13 23:23:19,596 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 189 transitions. [2020-10-13 23:23:19,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 23:23:19,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:23:19,598 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:23:19,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:23:19,598 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:23:19,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:23:19,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1341042069, now seen corresponding path program 3 times [2020-10-13 23:23:19,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:23:19,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051301092] [2020-10-13 23:23:19,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:23:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:19,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:19,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:19,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:19,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:19,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:19,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:20,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:24,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:24,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 23:23:24,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 23:23:24,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:23:24,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:24,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:24,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:23:24,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 23:23:24,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 23:23:24,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:23:24,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:23:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:24,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:24,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:24,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:23:24,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:23:24,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:23:24,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:24,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:24,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:23:24,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:23:24,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:23:24,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:23:24,733 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 23:23:24,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051301092] [2020-10-13 23:23:24,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:23:24,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:23:24,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833350853] [2020-10-13 23:23:24,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:23:24,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:23:24,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:23:24,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:23:24,736 INFO L87 Difference]: Start difference. First operand 162 states and 189 transitions. Second operand 10 states. [2020-10-13 23:23:25,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:23:25,587 INFO L93 Difference]: Finished difference Result 279 states and 330 transitions. [2020-10-13 23:23:25,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:23:25,588 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-10-13 23:23:25,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:23:25,596 INFO L225 Difference]: With dead ends: 279 [2020-10-13 23:23:25,597 INFO L226 Difference]: Without dead ends: 193 [2020-10-13 23:23:25,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:23:25,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-13 23:23:25,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 148. [2020-10-13 23:23:25,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-13 23:23:25,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 167 transitions. [2020-10-13 23:23:25,644 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 167 transitions. Word has length 78 [2020-10-13 23:23:25,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:23:25,649 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 167 transitions. [2020-10-13 23:23:25,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:23:25,649 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 167 transitions. [2020-10-13 23:23:25,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 23:23:25,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:23:25,650 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:23:25,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:23:25,651 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:23:25,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:23:25,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1092318379, now seen corresponding path program 4 times [2020-10-13 23:23:25,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:23:25,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142085541] [2020-10-13 23:23:25,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:23:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:25,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:25,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:25,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:25,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:25,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:25,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:26,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:30,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:30,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 23:23:30,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 23:23:30,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:23:30,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:30,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:23:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:23:30,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 23:23:30,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:23:30,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:23:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:30,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:30,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:30,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:23:30,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:23:30,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:23:30,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:30,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:30,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:23:30,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:23:30,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:23:30,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:23:30,786 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 23:23:30,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142085541] [2020-10-13 23:23:30,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:23:30,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:23:30,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61882203] [2020-10-13 23:23:30,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:23:30,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:23:30,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:23:30,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:23:30,789 INFO L87 Difference]: Start difference. First operand 148 states and 167 transitions. Second operand 10 states. [2020-10-13 23:23:31,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:23:31,299 INFO L93 Difference]: Finished difference Result 249 states and 278 transitions. [2020-10-13 23:23:31,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:23:31,299 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-10-13 23:23:31,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:23:31,300 INFO L225 Difference]: With dead ends: 249 [2020-10-13 23:23:31,300 INFO L226 Difference]: Without dead ends: 110 [2020-10-13 23:23:31,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:23:31,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-13 23:23:31,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 99. [2020-10-13 23:23:31,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 23:23:31,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2020-10-13 23:23:31,320 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 78 [2020-10-13 23:23:31,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:23:31,323 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2020-10-13 23:23:31,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:23:31,323 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2020-10-13 23:23:31,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 23:23:31,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:23:31,324 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:23:31,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:23:31,325 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:23:31,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:23:31,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1668276929, now seen corresponding path program 5 times [2020-10-13 23:23:31,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:23:31,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747265714] [2020-10-13 23:23:31,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:23:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:31,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:32,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:33,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:36,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:36,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 23:23:36,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:23:36,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:23:36,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:36,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 64 [2020-10-13 23:23:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:23:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 23:23:36,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:23:41,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:23:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:41,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:41,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:41,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:23:41,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:23:41,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:23:41,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:41,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:41,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:23:41,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:23:41,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:23:41,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:23:41,223 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 23:23:41,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747265714] [2020-10-13 23:23:41,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:23:41,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-13 23:23:41,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892969156] [2020-10-13 23:23:41,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-13 23:23:41,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:23:41,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-13 23:23:41,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=3184, Unknown=0, NotChecked=0, Total=3306 [2020-10-13 23:23:41,227 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand 58 states. [2020-10-13 23:23:45,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:23:45,925 INFO L93 Difference]: Finished difference Result 179 states and 198 transitions. [2020-10-13 23:23:45,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-13 23:23:45,926 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 98 [2020-10-13 23:23:45,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:23:45,928 INFO L225 Difference]: With dead ends: 179 [2020-10-13 23:23:45,928 INFO L226 Difference]: Without dead ends: 174 [2020-10-13 23:23:45,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 5 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=132, Invalid=3408, Unknown=0, NotChecked=0, Total=3540 [2020-10-13 23:23:45,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-13 23:23:45,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 168. [2020-10-13 23:23:45,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-13 23:23:45,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 187 transitions. [2020-10-13 23:23:45,949 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 187 transitions. Word has length 98 [2020-10-13 23:23:45,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:23:45,950 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 187 transitions. [2020-10-13 23:23:45,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-13 23:23:45,950 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 187 transitions. [2020-10-13 23:23:45,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 23:23:45,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:23:45,951 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:23:45,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:23:45,951 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:23:45,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:23:45,952 INFO L82 PathProgramCache]: Analyzing trace with hash 119858975, now seen corresponding path program 6 times [2020-10-13 23:23:45,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:23:45,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044672602] [2020-10-13 23:23:45,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:23:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:45,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:45,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:45,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:46,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:46,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:46,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:48,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:50,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:50,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 23:23:50,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 23:23:50,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:23:50,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:50,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:50,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:23:50,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 23:23:50,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 23:23:50,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:23:51,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:23:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:51,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:51,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:51,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:23:51,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:23:51,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:23:51,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:51,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:51,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:23:51,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:23:51,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:23:51,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:23:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-13 23:23:51,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044672602] [2020-10-13 23:23:51,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:23:51,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:23:51,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681165633] [2020-10-13 23:23:51,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:23:51,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:23:51,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:23:51,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:23:51,108 INFO L87 Difference]: Start difference. First operand 168 states and 187 transitions. Second operand 12 states. [2020-10-13 23:23:52,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:23:52,531 INFO L93 Difference]: Finished difference Result 339 states and 385 transitions. [2020-10-13 23:23:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:23:52,532 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2020-10-13 23:23:52,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:23:52,534 INFO L225 Difference]: With dead ends: 339 [2020-10-13 23:23:52,534 INFO L226 Difference]: Without dead ends: 201 [2020-10-13 23:23:52,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:23:52,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-13 23:23:52,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 186. [2020-10-13 23:23:52,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-13 23:23:52,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 205 transitions. [2020-10-13 23:23:52,556 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 205 transitions. Word has length 100 [2020-10-13 23:23:52,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:23:52,556 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 205 transitions. [2020-10-13 23:23:52,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:23:52,556 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 205 transitions. [2020-10-13 23:23:52,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 23:23:52,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:23:52,558 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:23:52,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:23:52,558 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:23:52,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:23:52,558 INFO L82 PathProgramCache]: Analyzing trace with hash -2090298145, now seen corresponding path program 7 times [2020-10-13 23:23:52,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:23:52,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424511326] [2020-10-13 23:23:52,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:23:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:52,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:52,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:52,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:52,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:52,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:52,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:53,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:57,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:57,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 23:23:57,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 23:23:57,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:23:57,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:57,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:57,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:23:57,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:23:57,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 23:23:57,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:23:57,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:23:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:57,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:57,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:57,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:23:57,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:23:57,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:23:57,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:57,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:57,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:23:57,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:23:57,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:23:57,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:23:57,702 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-13 23:23:57,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424511326] [2020-10-13 23:23:57,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:23:57,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:23:57,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763766201] [2020-10-13 23:23:57,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:23:57,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:23:57,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:23:57,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:23:57,705 INFO L87 Difference]: Start difference. First operand 186 states and 205 transitions. Second operand 12 states. [2020-10-13 23:23:58,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:23:58,427 INFO L93 Difference]: Finished difference Result 309 states and 338 transitions. [2020-10-13 23:23:58,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:23:58,428 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2020-10-13 23:23:58,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:23:58,430 INFO L225 Difference]: With dead ends: 309 [2020-10-13 23:23:58,430 INFO L226 Difference]: Without dead ends: 132 [2020-10-13 23:23:58,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:23:58,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-13 23:23:58,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 121. [2020-10-13 23:23:58,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-13 23:23:58,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2020-10-13 23:23:58,444 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 100 [2020-10-13 23:23:58,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:23:58,444 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2020-10-13 23:23:58,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:23:58,444 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2020-10-13 23:23:58,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 23:23:58,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:23:58,446 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:23:58,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:23:58,446 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:23:58,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:23:58,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1988100939, now seen corresponding path program 8 times [2020-10-13 23:23:58,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:23:58,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899180007] [2020-10-13 23:23:58,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:23:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:58,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:00,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:03,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:24:03,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 23:24:03,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:24:03,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 23:24:03,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:24:03,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:24:03,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 92 [2020-10-13 23:24:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:24:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 23:24:03,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:24:07,072 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-10-13 23:24:07,465 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-13 23:24:07,745 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-10-13 23:24:10,117 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2020-10-13 23:24:12,065 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-13 23:24:18,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:24:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:24:18,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:18,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:24:18,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:24:18,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:24:18,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:24:18,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:24:18,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:24:18,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:24:18,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:24:18,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:24:18,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:24:18,295 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:24:18,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899180007] [2020-10-13 23:24:18,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:24:18,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2020-10-13 23:24:18,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299465055] [2020-10-13 23:24:18,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-10-13 23:24:18,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:24:18,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-10-13 23:24:18,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=621, Invalid=7211, Unknown=0, NotChecked=0, Total=7832 [2020-10-13 23:24:18,299 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand 89 states. [2020-10-13 23:24:18,630 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 3 [2020-10-13 23:24:19,099 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 18 [2020-10-13 23:24:19,898 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 91 [2020-10-13 23:24:20,555 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-13 23:24:21,425 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 92 [2020-10-13 23:24:21,833 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-10-13 23:24:22,386 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 88 [2020-10-13 23:24:22,917 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 80 [2020-10-13 23:24:23,255 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-10-13 23:24:23,580 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-13 23:24:24,215 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 91 [2020-10-13 23:24:24,499 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-13 23:24:25,193 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-13 23:24:25,882 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 85 [2020-10-13 23:24:26,689 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2020-10-13 23:24:26,983 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2020-10-13 23:24:27,330 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-13 23:24:28,234 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-10-13 23:24:28,767 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2020-10-13 23:24:29,574 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 55 [2020-10-13 23:24:30,178 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 93 [2020-10-13 23:24:31,020 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 65 [2020-10-13 23:24:31,695 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 102 [2020-10-13 23:24:32,238 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 54 [2020-10-13 23:24:32,838 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 65 [2020-10-13 23:24:33,583 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 90 [2020-10-13 23:24:34,016 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2020-10-13 23:24:34,854 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 64 [2020-10-13 23:24:35,331 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2020-10-13 23:24:35,875 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 90 [2020-10-13 23:24:36,447 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2020-10-13 23:24:37,290 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 64 [2020-10-13 23:24:37,777 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2020-10-13 23:24:38,134 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-10-13 23:24:38,779 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 64 [2020-10-13 23:24:39,185 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-10-13 23:24:39,481 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2020-10-13 23:24:40,087 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 34 [2020-10-13 23:24:40,458 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2020-10-13 23:24:40,781 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-13 23:24:41,013 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-10-13 23:24:41,644 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2020-10-13 23:24:41,881 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-10-13 23:24:42,427 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2020-10-13 23:24:43,390 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-10-13 23:24:44,088 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 87 [2020-10-13 23:24:44,706 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-13 23:24:45,590 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 91 [2020-10-13 23:24:46,163 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-10-13 23:24:47,102 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2020-10-13 23:24:47,826 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2020-10-13 23:24:52,052 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2020-10-13 23:24:52,638 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-10-13 23:24:53,398 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-10-13 23:24:53,854 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2020-10-13 23:24:54,185 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-13 23:24:54,534 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2020-10-13 23:24:54,867 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-10-13 23:24:55,226 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 50 [2020-10-13 23:24:55,522 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-10-13 23:24:55,856 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-10-13 23:24:56,197 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2020-10-13 23:24:56,813 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 86 [2020-10-13 23:24:57,165 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-10-13 23:24:57,460 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49 [2020-10-13 23:24:57,862 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-13 23:24:58,505 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2020-10-13 23:24:59,155 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-13 23:24:59,755 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-13 23:25:00,442 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2020-10-13 23:25:01,263 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 84 [2020-10-13 23:25:02,599 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 83 [2020-10-13 23:25:03,490 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 82 [2020-10-13 23:25:04,197 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 87 [2020-10-13 23:25:05,121 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2020-10-13 23:25:05,684 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-10-13 23:25:06,134 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 44 [2020-10-13 23:25:06,705 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-10-13 23:25:07,544 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 85 [2020-10-13 23:25:08,239 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-10-13 23:25:08,962 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-13 23:25:10,290 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-10-13 23:25:11,828 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-13 23:25:20,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:25:20,381 INFO L93 Difference]: Finished difference Result 611 states and 693 transitions. [2020-10-13 23:25:20,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2020-10-13 23:25:20,384 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 120 [2020-10-13 23:25:20,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:25:20,388 INFO L225 Difference]: With dead ends: 611 [2020-10-13 23:25:20,389 INFO L226 Difference]: Without dead ends: 605 [2020-10-13 23:25:20,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11350 ImplicationChecksByTransitivity, 50.2s TimeCoverageRelationStatistics Valid=3220, Invalid=35000, Unknown=0, NotChecked=0, Total=38220 [2020-10-13 23:25:20,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2020-10-13 23:25:20,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 445. [2020-10-13 23:25:20,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-10-13 23:25:20,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 513 transitions. [2020-10-13 23:25:20,458 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 513 transitions. Word has length 120 [2020-10-13 23:25:20,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:25:20,459 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 513 transitions. [2020-10-13 23:25:20,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-10-13 23:25:20,459 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 513 transitions. [2020-10-13 23:25:20,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 23:25:20,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:25:20,461 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:25:20,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:25:20,461 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:25:20,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:25:20,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1113687255, now seen corresponding path program 9 times [2020-10-13 23:25:20,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:25:20,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038759314] [2020-10-13 23:25:20,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:25:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:25:20,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:25:20,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:25:20,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:25:20,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:25:20,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:25:20,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:25:25,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:25:25,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 23:25:25,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:25:25,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 23:25:25,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:25:25,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:25:25,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:25:25,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:25:25,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 23:25:25,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:25:25,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:25:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:25:25,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:25:25,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:25:25,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:25:25,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:25:25,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:25:25,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:25:25,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:25:25,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:25:25,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:25:25,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:25:25,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:25:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 23:25:25,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038759314] [2020-10-13 23:25:25,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:25:25,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:25:25,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360554387] [2020-10-13 23:25:25,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:25:25,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:25:25,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:25:25,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:25:25,802 INFO L87 Difference]: Start difference. First operand 445 states and 513 transitions. Second operand 14 states. [2020-10-13 23:25:27,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:25:27,588 INFO L93 Difference]: Finished difference Result 740 states and 842 transitions. [2020-10-13 23:25:27,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:25:27,590 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 122 [2020-10-13 23:25:27,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:25:27,592 INFO L225 Difference]: With dead ends: 740 [2020-10-13 23:25:27,592 INFO L226 Difference]: Without dead ends: 249 [2020-10-13 23:25:27,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:25:27,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-13 23:25:27,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 231. [2020-10-13 23:25:27,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-13 23:25:27,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 250 transitions. [2020-10-13 23:25:27,617 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 250 transitions. Word has length 122 [2020-10-13 23:25:27,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:25:27,618 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 250 transitions. [2020-10-13 23:25:27,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:25:27,618 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 250 transitions. [2020-10-13 23:25:27,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 23:25:27,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:25:27,619 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:25:27,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:25:27,619 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:25:27,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:25:27,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1653396119, now seen corresponding path program 10 times [2020-10-13 23:25:27,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:25:27,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649319317] [2020-10-13 23:25:27,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:25:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:25:27,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:25:27,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:25:27,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:25:27,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:25:27,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:25:27,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:25:32,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:25:32,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 23:25:32,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:25:32,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:25:32,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:25:32,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:25:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:25:32,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:25:32,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 23:25:32,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:25:32,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:25:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:25:32,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:25:32,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:25:32,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:25:32,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:25:32,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:25:32,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:25:32,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:25:32,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:25:32,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:25:32,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:25:32,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:25:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 23:25:32,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649319317] [2020-10-13 23:25:32,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:25:32,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:25:32,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14851870] [2020-10-13 23:25:32,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:25:32,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:25:32,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:25:32,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:25:32,857 INFO L87 Difference]: Start difference. First operand 231 states and 250 transitions. Second operand 14 states. [2020-10-13 23:25:34,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:25:34,418 INFO L93 Difference]: Finished difference Result 238 states and 257 transitions. [2020-10-13 23:25:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:25:34,420 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 122 [2020-10-13 23:25:34,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:25:34,422 INFO L225 Difference]: With dead ends: 238 [2020-10-13 23:25:34,422 INFO L226 Difference]: Without dead ends: 143 [2020-10-13 23:25:34,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:25:34,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-13 23:25:34,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-10-13 23:25:34,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-13 23:25:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 153 transitions. [2020-10-13 23:25:34,441 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 153 transitions. Word has length 122 [2020-10-13 23:25:34,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:25:34,441 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 153 transitions. [2020-10-13 23:25:34,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:25:34,441 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 153 transitions. [2020-10-13 23:25:34,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 23:25:34,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:25:34,443 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:25:34,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:25:34,443 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:25:34,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:25:34,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1580007339, now seen corresponding path program 11 times [2020-10-13 23:25:34,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:25:34,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230813006] [2020-10-13 23:25:34,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:25:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:25:34,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:25:38,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:25:41,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:25:41,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 23:25:41,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:25:41,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6669 [2020-10-13 23:25:41,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:25:41,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:25:41,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 111 [2020-10-13 23:25:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:25:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-13 23:25:41,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:25:50,221 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-10-13 23:25:50,571 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-10-13 23:25:52,140 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-10-13 23:25:52,570 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-10-13 23:25:54,087 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-10-13 23:25:54,438 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-13 23:25:55,360 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-10-13 23:25:55,908 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-10-13 23:25:56,425 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-10-13 23:25:56,935 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-10-13 23:25:57,466 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-13 23:25:57,969 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-13 23:25:58,465 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-10-13 23:25:58,930 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-13 23:26:00,724 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-10-13 23:26:02,172 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2020-10-13 23:26:02,624 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2020-10-13 23:26:03,649 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-13 23:26:04,142 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-13 23:26:12,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:12,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:12,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:12,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:12,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:12,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:26:12,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:12,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:12,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:12,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:12,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:12,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:26:12,366 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 12 proven. 263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:26:12,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230813006] [2020-10-13 23:26:12,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:26:12,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2020-10-13 23:26:12,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601881857] [2020-10-13 23:26:12,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2020-10-13 23:26:12,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:12,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2020-10-13 23:26:12,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=11065, Unknown=0, NotChecked=0, Total=11556 [2020-10-13 23:26:12,368 INFO L87 Difference]: Start difference. First operand 143 states and 153 transitions. Second operand 108 states. [2020-10-13 23:26:12,918 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 3 [2020-10-13 23:26:13,712 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 18 [2020-10-13 23:26:15,061 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-10-13 23:26:15,713 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-10-13 23:26:18,024 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-13 23:26:18,619 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-13 23:26:19,462 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-10-13 23:26:22,566 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-13 23:26:23,759 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-13 23:26:25,282 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-13 23:26:25,947 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-13 23:26:26,642 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-10-13 23:26:28,540 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55