/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 17:43:44,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 17:43:44,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 17:43:44,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 17:43:44,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 17:43:44,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 17:43:44,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 17:43:44,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 17:43:44,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 17:43:44,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 17:43:44,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 17:43:44,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 17:43:44,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 17:43:44,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 17:43:44,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 17:43:44,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 17:43:44,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 17:43:44,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 17:43:44,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 17:43:44,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 17:43:44,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 17:43:44,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 17:43:44,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 17:43:44,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 17:43:44,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 17:43:44,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 17:43:44,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 17:43:44,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 17:43:44,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 17:43:44,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 17:43:44,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 17:43:44,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 17:43:44,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 17:43:44,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 17:43:44,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 17:43:44,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 17:43:44,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 17:43:44,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 17:43:44,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 17:43:44,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 17:43:44,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 17:43:44,828 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 17:43:44,856 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 17:43:44,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 17:43:44,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 17:43:44,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 17:43:44,858 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 17:43:44,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 17:43:44,858 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 17:43:44,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 17:43:44,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 17:43:44,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 17:43:44,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 17:43:44,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 17:43:44,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 17:43:44,859 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 17:43:44,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 17:43:44,860 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 17:43:44,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 17:43:44,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 17:43:44,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 17:43:44,862 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 17:43:44,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 17:43:44,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:43:44,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 17:43:44,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 17:43:44,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 17:43:44,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 17:43:44,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 17:43:44,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 17:43:44,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 17:43:44,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 17:43:45,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 17:43:45,219 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 17:43:45,223 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 17:43:45,224 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 17:43:45,225 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 17:43:45,226 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m5.c [2020-10-14 17:43:45,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2fd45705e/4fddf213c2484e1d8b89e47d7287b62e/FLAGa8a2afdc4 [2020-10-14 17:43:45,735 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 17:43:45,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/zero_sum_const_m5.c [2020-10-14 17:43:45,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2fd45705e/4fddf213c2484e1d8b89e47d7287b62e/FLAGa8a2afdc4 [2020-10-14 17:43:46,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2fd45705e/4fddf213c2484e1d8b89e47d7287b62e [2020-10-14 17:43:46,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 17:43:46,125 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 17:43:46,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 17:43:46,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 17:43:46,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 17:43:46,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:43:46" (1/1) ... [2020-10-14 17:43:46,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e8bb43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:46, skipping insertion in model container [2020-10-14 17:43:46,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:43:46" (1/1) ... [2020-10-14 17:43:46,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 17:43:46,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 17:43:46,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:43:46,404 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 17:43:46,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:43:46,542 INFO L208 MainTranslator]: Completed translation [2020-10-14 17:43:46,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:46 WrapperNode [2020-10-14 17:43:46,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 17:43:46,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 17:43:46,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 17:43:46,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 17:43:46,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:46" (1/1) ... [2020-10-14 17:43:46,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:46" (1/1) ... [2020-10-14 17:43:46,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:46" (1/1) ... [2020-10-14 17:43:46,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:46" (1/1) ... [2020-10-14 17:43:46,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:46" (1/1) ... [2020-10-14 17:43:46,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:46" (1/1) ... [2020-10-14 17:43:46,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:46" (1/1) ... [2020-10-14 17:43:46,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 17:43:46,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 17:43:46,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 17:43:46,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 17:43:46,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:43:46,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 17:43:46,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 17:43:46,663 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 17:43:46,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 17:43:46,663 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 17:43:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 17:43:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 17:43:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 17:43:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 17:43:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 17:43:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 17:43:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 17:43:46,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 17:43:46,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 17:43:46,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 17:43:46,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 17:43:46,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 17:43:46,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 17:43:47,052 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 17:43:47,053 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-14 17:43:47,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:43:47 BoogieIcfgContainer [2020-10-14 17:43:47,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 17:43:47,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 17:43:47,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 17:43:47,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 17:43:47,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:43:46" (1/3) ... [2020-10-14 17:43:47,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d326c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:43:47, skipping insertion in model container [2020-10-14 17:43:47,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:46" (2/3) ... [2020-10-14 17:43:47,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d326c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:43:47, skipping insertion in model container [2020-10-14 17:43:47,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:43:47" (3/3) ... [2020-10-14 17:43:47,071 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum_const_m5.c [2020-10-14 17:43:47,085 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 17:43:47,094 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 17:43:47,121 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 17:43:47,151 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 17:43:47,152 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 17:43:47,152 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 17:43:47,152 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 17:43:47,152 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 17:43:47,152 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 17:43:47,153 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 17:43:47,153 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 17:43:47,178 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-10-14 17:43:47,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 17:43:47,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:43:47,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:43:47,186 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:43:47,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:43:47,194 INFO L82 PathProgramCache]: Analyzing trace with hash -449577023, now seen corresponding path program 1 times [2020-10-14 17:43:47,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:43:47,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635137336] [2020-10-14 17:43:47,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:43:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:47,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:47,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:47,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:47,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:47,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:47,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:47,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:47,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:48,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:48,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:49,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:49,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:50,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:50,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 17:43:50,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 17:43:50,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3413 [2020-10-14 17:43:50,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:50,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:50,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:43:50,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:43:50,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 17:43:50,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 17:43:51,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:43:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:51,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:51,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:51,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:43:51,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:43:51,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 17:43:51,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:51,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:51,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:43:51,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:43:51,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:43:51,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 17:43:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:43:51,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635137336] [2020-10-14 17:43:51,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:43:51,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 17:43:51,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15367290] [2020-10-14 17:43:51,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 17:43:51,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:43:51,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 17:43:51,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:43:51,111 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 6 states. [2020-10-14 17:43:51,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:43:51,555 INFO L93 Difference]: Finished difference Result 120 states and 186 transitions. [2020-10-14 17:43:51,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 17:43:51,558 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-14 17:43:51,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:43:51,571 INFO L225 Difference]: With dead ends: 120 [2020-10-14 17:43:51,572 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 17:43:51,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 17:43:51,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 17:43:51,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-14 17:43:51,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 17:43:51,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2020-10-14 17:43:51,644 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 32 [2020-10-14 17:43:51,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:43:51,645 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2020-10-14 17:43:51,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 17:43:51,645 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2020-10-14 17:43:51,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 17:43:51,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:43:51,648 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] [2020-10-14 17:43:51,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 17:43:51,649 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:43:51,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:43:51,650 INFO L82 PathProgramCache]: Analyzing trace with hash -80080895, now seen corresponding path program 1 times [2020-10-14 17:43:51,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:43:51,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134005102] [2020-10-14 17:43:51,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:43:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:51,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:51,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:51,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:51,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:51,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:51,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:51,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:51,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:51,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:52,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:52,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:52,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:52,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:52,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:52,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:56,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:56,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 17:43:56,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 17:43:56,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:43:56,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:56,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:56,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:43:56,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:43:56,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 17:43:56,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:43:56,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:43:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:56,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:56,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:56,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:43:56,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:43:56,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:43:56,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:56,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:56,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:43:56,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:43:56,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:43:56,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:43:56,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 17:43:56,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134005102] [2020-10-14 17:43:56,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:43:56,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 17:43:56,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199581025] [2020-10-14 17:43:56,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 17:43:56,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:43:56,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 17:43:56,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:43:56,734 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand 5 states. [2020-10-14 17:43:56,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:43:56,952 INFO L93 Difference]: Finished difference Result 120 states and 159 transitions. [2020-10-14 17:43:56,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 17:43:56,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-14 17:43:56,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:43:56,954 INFO L225 Difference]: With dead ends: 120 [2020-10-14 17:43:56,955 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 17:43:56,956 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 [2020-10-14 17:43:56,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 17:43:56,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 55. [2020-10-14 17:43:56,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 17:43:56,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-14 17:43:56,966 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 34 [2020-10-14 17:43:56,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:43:56,967 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-14 17:43:56,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 17:43:56,967 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-14 17:43:56,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 17:43:56,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:43:56,969 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] [2020-10-14 17:43:56,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 17:43:56,969 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:43:56,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:43:56,970 INFO L82 PathProgramCache]: Analyzing trace with hash 253867821, now seen corresponding path program 1 times [2020-10-14 17:43:56,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:43:56,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446448688] [2020-10-14 17:43:56,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:43:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:56,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:56,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:57,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:57,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:57,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:57,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:57,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:57,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:01,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:01,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 17:44:01,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 17:44:01,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 17:44:01,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:01,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:01,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:44:01,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:44:01,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:44:01,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:44:02,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:44:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:02,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:02,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:02,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:44:02,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:44:02,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:44:02,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:02,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:02,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:44:02,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:44:02,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:44:02,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:44:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 17:44:02,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446448688] [2020-10-14 17:44:02,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:44:02,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 17:44:02,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591377055] [2020-10-14 17:44:02,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 17:44:02,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:44:02,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 17:44:02,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:44:02,090 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 6 states. [2020-10-14 17:44:02,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:44:02,407 INFO L93 Difference]: Finished difference Result 122 states and 152 transitions. [2020-10-14 17:44:02,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 17:44:02,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-14 17:44:02,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:44:02,409 INFO L225 Difference]: With dead ends: 122 [2020-10-14 17:44:02,409 INFO L226 Difference]: Without dead ends: 77 [2020-10-14 17:44:02,410 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 [2020-10-14 17:44:02,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-14 17:44:02,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-14 17:44:02,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 17:44:02,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2020-10-14 17:44:02,420 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 54 [2020-10-14 17:44:02,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:44:02,421 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2020-10-14 17:44:02,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 17:44:02,421 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2020-10-14 17:44:02,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 17:44:02,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:44:02,423 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] [2020-10-14 17:44:02,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 17:44:02,423 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:44:02,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:44:02,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1195572919, now seen corresponding path program 2 times [2020-10-14 17:44:02,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:44:02,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050534608] [2020-10-14 17:44:02,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:44:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:02,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:03,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:04,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:06,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:07,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:07,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 17:44:07,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:44:07,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 17:44:07,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:07,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:07,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-14 17:44:07,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:44:07,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 17:44:07,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:44:10,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:44:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:10,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:10,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:10,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:44:10,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:44:10,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:44:10,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:10,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:44:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:44:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:44:10,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:44:10,382 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 17:44:10,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050534608] [2020-10-14 17:44:10,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:44:10,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 17:44:10,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75972405] [2020-10-14 17:44:10,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 17:44:10,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:44:10,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 17:44:10,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1323, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 17:44:10,388 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 38 states. [2020-10-14 17:44:12,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:44:12,752 INFO L93 Difference]: Finished difference Result 139 states and 158 transitions. [2020-10-14 17:44:12,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 17:44:12,755 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 76 [2020-10-14 17:44:12,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:44:12,757 INFO L225 Difference]: With dead ends: 139 [2020-10-14 17:44:12,757 INFO L226 Difference]: Without dead ends: 134 [2020-10-14 17:44:12,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=93, Invalid=1467, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 17:44:12,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-14 17:44:12,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2020-10-14 17:44:12,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-14 17:44:12,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2020-10-14 17:44:12,792 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 76 [2020-10-14 17:44:12,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:44:12,797 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2020-10-14 17:44:12,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 17:44:12,797 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2020-10-14 17:44:12,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 17:44:12,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:44:12,799 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] [2020-10-14 17:44:12,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 17:44:12,800 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:44:12,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:44:12,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1341042069, now seen corresponding path program 3 times [2020-10-14 17:44:12,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:44:12,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023639773] [2020-10-14 17:44:12,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:44:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:12,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:12,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:12,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:12,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:12,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:13,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:14,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:17,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:17,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 17:44:17,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:44:17,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 17:44:17,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:17,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:17,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:44:17,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 17:44:17,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:44:17,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:44:17,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:44:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:17,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:17,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:17,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:44:17,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:44:17,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:44:17,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:17,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:17,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:44:17,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:44:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:44:17,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:44:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 17:44:17,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023639773] [2020-10-14 17:44:17,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:44:17,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 17:44:17,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878961525] [2020-10-14 17:44:17,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 17:44:17,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:44:17,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 17:44:17,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:44:17,981 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 10 states. [2020-10-14 17:44:18,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:44:18,806 INFO L93 Difference]: Finished difference Result 265 states and 311 transitions. [2020-10-14 17:44:18,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 17:44:18,806 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-10-14 17:44:18,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:44:18,808 INFO L225 Difference]: With dead ends: 265 [2020-10-14 17:44:18,808 INFO L226 Difference]: Without dead ends: 159 [2020-10-14 17:44:18,814 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 [2020-10-14 17:44:18,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-14 17:44:18,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 148. [2020-10-14 17:44:18,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-14 17:44:18,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 167 transitions. [2020-10-14 17:44:18,842 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 167 transitions. Word has length 78 [2020-10-14 17:44:18,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:44:18,843 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 167 transitions. [2020-10-14 17:44:18,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 17:44:18,845 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 167 transitions. [2020-10-14 17:44:18,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 17:44:18,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:44:18,848 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] [2020-10-14 17:44:18,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 17:44:18,852 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:44:18,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:44:18,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1092318379, now seen corresponding path program 4 times [2020-10-14 17:44:18,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:44:18,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269894028] [2020-10-14 17:44:18,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:44:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:18,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:18,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:18,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:18,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:19,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:19,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:19,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:23,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:23,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 17:44:23,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:44:23,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 17:44:23,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:23,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:23,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:44:23,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:44:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:44:23,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:44:23,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:44:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:23,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:23,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:23,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:44:23,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:44:23,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:44:23,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:23,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:23,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:44:23,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:44:23,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:44:23,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:44:24,003 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 17:44:24,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269894028] [2020-10-14 17:44:24,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:44:24,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 17:44:24,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56618613] [2020-10-14 17:44:24,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 17:44:24,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:44:24,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 17:44:24,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:44:24,007 INFO L87 Difference]: Start difference. First operand 148 states and 167 transitions. Second operand 10 states. [2020-10-14 17:44:24,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:44:24,496 INFO L93 Difference]: Finished difference Result 249 states and 278 transitions. [2020-10-14 17:44:24,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 17:44:24,497 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-10-14 17:44:24,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:44:24,499 INFO L225 Difference]: With dead ends: 249 [2020-10-14 17:44:24,500 INFO L226 Difference]: Without dead ends: 110 [2020-10-14 17:44:24,504 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 [2020-10-14 17:44:24,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-14 17:44:24,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 99. [2020-10-14 17:44:24,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 17:44:24,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2020-10-14 17:44:24,520 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 78 [2020-10-14 17:44:24,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:44:24,521 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2020-10-14 17:44:24,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 17:44:24,521 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2020-10-14 17:44:24,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 17:44:24,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:44:24,524 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] [2020-10-14 17:44:24,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 17:44:24,527 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:44:24,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:44:24,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1668276929, now seen corresponding path program 5 times [2020-10-14 17:44:24,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:44:24,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733804450] [2020-10-14 17:44:24,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:44:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:24,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:26,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:28,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:29,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:29,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 17:44:29,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:44:29,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 17:44:29,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:29,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 64 [2020-10-14 17:44:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:44:29,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 17:44:29,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:44:34,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:44:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:34,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:34,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:34,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:44:34,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:44:34,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:44:34,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:34,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:34,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:44:34,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:44:34,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:44:34,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:44:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 17:44:34,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733804450] [2020-10-14 17:44:34,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:44:34,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-14 17:44:34,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220789946] [2020-10-14 17:44:34,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-14 17:44:34,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:44:34,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-14 17:44:34,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=3184, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 17:44:34,503 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand 58 states. [2020-10-14 17:44:39,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:44:39,565 INFO L93 Difference]: Finished difference Result 179 states and 198 transitions. [2020-10-14 17:44:39,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-14 17:44:39,566 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 98 [2020-10-14 17:44:39,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:44:39,568 INFO L225 Difference]: With dead ends: 179 [2020-10-14 17:44:39,568 INFO L226 Difference]: Without dead ends: 174 [2020-10-14 17:44:39,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 5 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=132, Invalid=3408, Unknown=0, NotChecked=0, Total=3540 [2020-10-14 17:44:39,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-14 17:44:39,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 168. [2020-10-14 17:44:39,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-14 17:44:39,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 187 transitions. [2020-10-14 17:44:39,585 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 187 transitions. Word has length 98 [2020-10-14 17:44:39,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:44:39,586 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 187 transitions. [2020-10-14 17:44:39,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-14 17:44:39,586 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 187 transitions. [2020-10-14 17:44:39,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 17:44:39,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:44:39,588 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] [2020-10-14 17:44:39,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 17:44:39,589 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:44:39,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:44:39,589 INFO L82 PathProgramCache]: Analyzing trace with hash 119858975, now seen corresponding path program 6 times [2020-10-14 17:44:39,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:44:39,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443020986] [2020-10-14 17:44:39,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:44:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:39,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:39,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:39,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:39,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:39,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:39,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:43,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:44,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:44,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 17:44:44,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:44:44,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 17:44:44,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:44,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:44,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:44:44,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 17:44:44,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 17:44:44,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:44:44,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:44:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:44,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:44,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:44,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:44:44,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:44:44,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:44:44,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:44,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:44,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:44:44,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:44:44,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:44:44,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:44:44,738 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 17:44:44,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443020986] [2020-10-14 17:44:44,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:44:44,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 17:44:44,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250675873] [2020-10-14 17:44:44,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 17:44:44,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:44:44,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 17:44:44,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-14 17:44:44,742 INFO L87 Difference]: Start difference. First operand 168 states and 187 transitions. Second operand 12 states. [2020-10-14 17:44:46,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:44:46,112 INFO L93 Difference]: Finished difference Result 339 states and 385 transitions. [2020-10-14 17:44:46,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 17:44:46,114 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2020-10-14 17:44:46,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:44:46,115 INFO L225 Difference]: With dead ends: 339 [2020-10-14 17:44:46,115 INFO L226 Difference]: Without dead ends: 201 [2020-10-14 17:44:46,117 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 [2020-10-14 17:44:46,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-14 17:44:46,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 186. [2020-10-14 17:44:46,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-14 17:44:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 205 transitions. [2020-10-14 17:44:46,138 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 205 transitions. Word has length 100 [2020-10-14 17:44:46,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:44:46,139 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 205 transitions. [2020-10-14 17:44:46,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 17:44:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 205 transitions. [2020-10-14 17:44:46,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 17:44:46,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:44:46,140 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] [2020-10-14 17:44:46,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 17:44:46,141 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:44:46,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:44:46,141 INFO L82 PathProgramCache]: Analyzing trace with hash -2090298145, now seen corresponding path program 7 times [2020-10-14 17:44:46,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:44:46,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138473517] [2020-10-14 17:44:46,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:44:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:46,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:46,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:46,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:46,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:46,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:46,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:47,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:51,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:51,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 17:44:51,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:44:51,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:44:51,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:51,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:51,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:44:51,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:44:51,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 17:44:51,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:44:51,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:44:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:51,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:51,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:51,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:44:51,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:44:51,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:44:51,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:51,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:51,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:44:51,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:44:51,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:44:51,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:44:51,295 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 17:44:51,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138473517] [2020-10-14 17:44:51,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:44:51,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 17:44:51,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838944398] [2020-10-14 17:44:51,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 17:44:51,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:44:51,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 17:44:51,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-14 17:44:51,298 INFO L87 Difference]: Start difference. First operand 186 states and 205 transitions. Second operand 12 states. [2020-10-14 17:44:52,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:44:52,079 INFO L93 Difference]: Finished difference Result 309 states and 338 transitions. [2020-10-14 17:44:52,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 17:44:52,079 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2020-10-14 17:44:52,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:44:52,081 INFO L225 Difference]: With dead ends: 309 [2020-10-14 17:44:52,081 INFO L226 Difference]: Without dead ends: 132 [2020-10-14 17:44:52,082 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 [2020-10-14 17:44:52,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-14 17:44:52,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 121. [2020-10-14 17:44:52,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 17:44:52,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2020-10-14 17:44:52,093 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 100 [2020-10-14 17:44:52,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:44:52,094 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2020-10-14 17:44:52,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 17:44:52,094 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2020-10-14 17:44:52,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 17:44:52,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:44:52,097 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] [2020-10-14 17:44:52,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 17:44:52,097 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:44:52,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:44:52,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1988100939, now seen corresponding path program 8 times [2020-10-14 17:44:52,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:44:52,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802980571] [2020-10-14 17:44:52,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:44:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:52,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:54,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:57,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:57,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 17:44:57,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:44:57,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 17:44:57,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:57,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 91 [2020-10-14 17:44:57,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:44:57,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 17:44:57,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:45:00,027 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-10-14 17:45:00,212 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-10-14 17:45:01,564 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-10-14 17:45:01,816 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-10-14 17:45:02,091 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-10-14 17:45:02,372 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2020-10-14 17:45:02,664 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2020-10-14 17:45:02,998 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 50 [2020-10-14 17:45:03,331 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 52 [2020-10-14 17:45:03,648 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2020-10-14 17:45:03,984 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2020-10-14 17:45:04,293 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2020-10-14 17:45:04,589 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2020-10-14 17:45:04,884 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2020-10-14 17:45:05,171 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2020-10-14 17:45:05,543 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 47 [2020-10-14 17:45:05,932 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2020-10-14 17:45:06,278 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-10-14 17:45:06,616 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2020-10-14 17:45:06,925 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2020-10-14 17:45:07,260 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2020-10-14 17:45:07,571 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2020-10-14 17:45:08,268 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 50 [2020-10-14 17:45:08,636 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2020-10-14 17:45:09,000 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2020-10-14 17:45:09,323 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2020-10-14 17:45:09,644 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-10-14 17:45:09,974 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2020-10-14 17:45:10,485 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 46 [2020-10-14 17:45:10,920 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 49 [2020-10-14 17:45:11,299 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2020-10-14 17:45:11,686 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2020-10-14 17:45:12,018 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-14 17:45:12,367 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2020-10-14 17:45:12,689 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-10-14 17:45:17,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:45:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:45:17,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:17,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:45:17,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:45:17,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:45:17,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:45:17,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:45:17,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:45:17,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:45:17,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:45:17,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:45:17,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:45:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 9 proven. 167 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:45:17,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802980571] [2020-10-14 17:45:17,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:45:17,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2020-10-14 17:45:17,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411342326] [2020-10-14 17:45:17,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-10-14 17:45:17,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:45:17,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-10-14 17:45:17,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=7532, Unknown=0, NotChecked=0, Total=8010 [2020-10-14 17:45:17,438 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand 90 states. [2020-10-14 17:45:18,775 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-14 17:45:20,464 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2020-10-14 17:45:20,855 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-10-14 17:45:21,721 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 51 [2020-10-14 17:45:22,329 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 48 [2020-10-14 17:45:23,480 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 51 [2020-10-14 17:45:24,110 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 66 [2020-10-14 17:45:24,850 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 49 [2020-10-14 17:45:25,357 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 49 [2020-10-14 17:45:26,416 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 50 [2020-10-14 17:45:27,078 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 93 [2020-10-14 17:45:27,469 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2020-10-14 17:45:27,981 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2020-10-14 17:45:28,599 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 71 [2020-10-14 17:45:29,602 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2020-10-14 17:45:31,171 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 48 [2020-10-14 17:45:31,885 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2020-10-14 17:45:33,942 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-10-14 17:45:34,660 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2020-10-14 17:45:35,226 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2020-10-14 17:45:35,950 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2020-10-14 17:45:36,568 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2020-10-14 17:45:37,256 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-14 17:45:38,319 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2020-10-14 17:45:39,293 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-14 17:45:40,039 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2020-10-14 17:45:42,397 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2020-10-14 17:45:43,392 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2020-10-14 17:45:43,932 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2020-10-14 17:45:45,244 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 103 [2020-10-14 17:45:46,168 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-14 17:45:47,818 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2020-10-14 17:45:49,015 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 79 [2020-10-14 17:45:49,824 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-14 17:45:53,325 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-14 17:45:54,233 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-14 17:45:55,090 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 51 [2020-10-14 17:45:55,681 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2020-10-14 17:45:56,493 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 54 [2020-10-14 17:45:57,134 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 41 [2020-10-14 17:45:57,603 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2020-10-14 17:45:58,415 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 51 [2020-10-14 17:45:59,151 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 46 [2020-10-14 17:45:59,728 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-14 17:46:00,483 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 50 [2020-10-14 17:46:01,129 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 39 [2020-10-14 17:46:01,665 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2020-10-14 17:46:02,328 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 41 [2020-10-14 17:46:03,057 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 44 [2020-10-14 17:46:06,043 WARN L193 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-14 17:46:07,110 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 45 [2020-10-14 17:46:07,728 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 36 [2020-10-14 17:46:08,594 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 71 [2020-10-14 17:46:09,662 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 39 [2020-10-14 17:46:10,708 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2020-10-14 17:46:20,381 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 68 [2020-10-14 17:46:22,226 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-10-14 17:46:24,520 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 104 [2020-10-14 17:46:26,547 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82 [2020-10-14 17:46:27,125 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-10-14 17:46:28,062 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-14 17:46:30,673 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 87 [2020-10-14 17:46:33,176 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 87 [2020-10-14 17:46:34,405 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-14 17:46:35,362 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-14 17:46:40,655 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-14 17:46:41,883 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-14 17:46:42,879 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 85 [2020-10-14 17:46:44,573 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 88 [2020-10-14 17:46:46,208 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-14 17:46:47,346 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-14 17:47:04,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:04,345 INFO L93 Difference]: Finished difference Result 442 states and 487 transitions. [2020-10-14 17:47:04,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2020-10-14 17:47:04,348 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 120 [2020-10-14 17:47:04,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:04,351 INFO L225 Difference]: With dead ends: 442 [2020-10-14 17:47:04,351 INFO L226 Difference]: Without dead ends: 273 [2020-10-14 17:47:04,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9438 ImplicationChecksByTransitivity, 66.5s TimeCoverageRelationStatistics Valid=2488, Invalid=35732, Unknown=0, NotChecked=0, Total=38220 [2020-10-14 17:47:04,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-14 17:47:04,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 232. [2020-10-14 17:47:04,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-14 17:47:04,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 249 transitions. [2020-10-14 17:47:04,383 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 249 transitions. Word has length 120 [2020-10-14 17:47:04,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:04,384 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 249 transitions. [2020-10-14 17:47:04,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-10-14 17:47:04,384 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 249 transitions. [2020-10-14 17:47:04,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 17:47:04,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:04,385 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] [2020-10-14 17:47:04,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 17:47:04,386 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:04,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:04,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1113687255, now seen corresponding path program 9 times [2020-10-14 17:47:04,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:04,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226342471] [2020-10-14 17:47:04,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:04,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:04,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:04,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:04,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:04,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:04,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:09,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:09,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 17:47:09,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 17:47:09,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 17:47:09,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:09,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:09,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:47:09,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 17:47:09,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 17:47:09,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:47:09,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:47:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:09,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:09,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:09,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:47:09,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:09,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:47:09,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:09,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:09,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:09,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:09,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:09,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:47:09,787 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 17:47:09,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226342471] [2020-10-14 17:47:09,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:47:09,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 17:47:09,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959028817] [2020-10-14 17:47:09,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 17:47:09,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:47:09,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 17:47:09,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:47:09,789 INFO L87 Difference]: Start difference. First operand 232 states and 249 transitions. Second operand 14 states. [2020-10-14 17:47:12,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:12,944 INFO L93 Difference]: Finished difference Result 485 states and 530 transitions. [2020-10-14 17:47:12,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 17:47:12,948 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 122 [2020-10-14 17:47:12,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:12,951 INFO L225 Difference]: With dead ends: 485 [2020-10-14 17:47:12,952 INFO L226 Difference]: Without dead ends: 249 [2020-10-14 17:47:12,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-14 17:47:12,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-14 17:47:12,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 231. [2020-10-14 17:47:12,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-14 17:47:12,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 250 transitions. [2020-10-14 17:47:12,976 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 250 transitions. Word has length 122 [2020-10-14 17:47:12,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:12,976 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 250 transitions. [2020-10-14 17:47:12,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 17:47:12,977 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 250 transitions. [2020-10-14 17:47:12,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 17:47:12,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:12,979 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] [2020-10-14 17:47:12,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 17:47:12,980 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:12,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:12,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1653396119, now seen corresponding path program 10 times [2020-10-14 17:47:12,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:12,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045740369] [2020-10-14 17:47:12,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:13,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:13,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:13,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:13,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:13,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:18,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:18,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 17:47:18,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 17:47:18,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 17:47:18,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:18,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:47:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:47:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 17:47:18,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:47:18,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:47:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:18,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:18,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:18,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:47:18,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:18,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:47:18,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:18,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:18,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:18,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:18,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:18,495 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 17:47:18,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045740369] [2020-10-14 17:47:18,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:47:18,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 17:47:18,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549716520] [2020-10-14 17:47:18,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 17:47:18,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:47:18,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 17:47:18,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:47:18,498 INFO L87 Difference]: Start difference. First operand 231 states and 250 transitions. Second operand 14 states. [2020-10-14 17:47:21,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:21,497 INFO L93 Difference]: Finished difference Result 238 states and 257 transitions. [2020-10-14 17:47:21,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 17:47:21,501 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 122 [2020-10-14 17:47:21,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:21,502 INFO L225 Difference]: With dead ends: 238 [2020-10-14 17:47:21,502 INFO L226 Difference]: Without dead ends: 143 [2020-10-14 17:47:21,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:47:21,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-14 17:47:21,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-10-14 17:47:21,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-14 17:47:21,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 153 transitions. [2020-10-14 17:47:21,516 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 153 transitions. Word has length 122 [2020-10-14 17:47:21,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:21,516 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 153 transitions. [2020-10-14 17:47:21,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 17:47:21,516 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 153 transitions. [2020-10-14 17:47:21,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 17:47:21,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:21,518 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] [2020-10-14 17:47:21,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 17:47:21,518 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:21,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:21,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1580007339, now seen corresponding path program 11 times [2020-10-14 17:47:21,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:21,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465835309] [2020-10-14 17:47:21,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:21,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:26,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:29,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:29,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 17:47:29,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:47:29,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8174 [2020-10-14 17:47:29,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:29,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 108 [2020-10-14 17:47:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:47:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 17:47:29,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:47:30,992 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 11 [2020-10-14 17:47:31,142 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 18 [2020-10-14 17:47:31,267 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2020-10-14 17:47:31,400 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2020-10-14 17:47:31,553 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-10-14 17:47:31,718 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2020-10-14 17:47:31,898 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2020-10-14 17:47:32,215 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2020-10-14 17:47:32,457 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-10-14 17:47:32,850 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-10-14 17:47:33,051 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-10-14 17:47:33,334 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-10-14 17:47:33,635 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-10-14 17:47:33,926 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35