/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_m5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 17:43:47,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 17:43:47,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 17:43:47,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 17:43:47,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 17:43:47,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 17:43:47,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 17:43:47,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 17:43:47,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 17:43:47,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 17:43:47,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 17:43:47,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 17:43:47,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 17:43:47,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 17:43:47,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 17:43:47,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 17:43:47,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 17:43:47,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 17:43:47,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 17:43:47,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 17:43:47,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 17:43:47,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 17:43:47,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 17:43:47,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 17:43:47,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 17:43:47,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 17:43:47,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 17:43:47,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 17:43:47,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 17:43:47,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 17:43:47,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 17:43:47,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 17:43:47,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 17:43:47,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 17:43:47,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 17:43:47,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 17:43:47,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 17:43:47,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 17:43:47,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 17:43:47,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 17:43:47,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 17:43:47,970 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 17:43:48,007 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 17:43:48,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 17:43:48,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 17:43:48,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 17:43:48,010 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 17:43:48,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 17:43:48,011 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 17:43:48,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 17:43:48,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 17:43:48,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 17:43:48,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 17:43:48,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 17:43:48,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 17:43:48,013 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 17:43:48,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 17:43:48,013 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 17:43:48,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 17:43:48,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 17:43:48,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 17:43:48,014 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 17:43:48,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 17:43:48,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:43:48,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 17:43:48,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 17:43:48,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 17:43:48,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 17:43:48,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 17:43:48,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 17:43:48,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 17:43:48,017 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 17:43:48,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 17:43:48,367 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 17:43:48,370 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 17:43:48,371 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 17:43:48,372 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 17:43:48,372 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_m5.c [2020-10-14 17:43:48,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/784bbb45f/88996f74a0cc42ce95c60e0433a3a1f4/FLAGbaf424771 [2020-10-14 17:43:48,841 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 17:43:48,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/zero_sum_m5.c [2020-10-14 17:43:48,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/784bbb45f/88996f74a0cc42ce95c60e0433a3a1f4/FLAGbaf424771 [2020-10-14 17:43:49,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/784bbb45f/88996f74a0cc42ce95c60e0433a3a1f4 [2020-10-14 17:43:49,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 17:43:49,186 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 17:43:49,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 17:43:49,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 17:43:49,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 17:43:49,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:43:49" (1/1) ... [2020-10-14 17:43:49,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c39f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:49, skipping insertion in model container [2020-10-14 17:43:49,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:43:49" (1/1) ... [2020-10-14 17:43:49,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 17:43:49,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 17:43:49,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:43:49,438 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 17:43:49,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:43:49,586 INFO L208 MainTranslator]: Completed translation [2020-10-14 17:43:49,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:49 WrapperNode [2020-10-14 17:43:49,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 17:43:49,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 17:43:49,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 17:43:49,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 17:43:49,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:49" (1/1) ... [2020-10-14 17:43:49,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:49" (1/1) ... [2020-10-14 17:43:49,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:49" (1/1) ... [2020-10-14 17:43:49,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:49" (1/1) ... [2020-10-14 17:43:49,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:49" (1/1) ... [2020-10-14 17:43:49,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:49" (1/1) ... [2020-10-14 17:43:49,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:49" (1/1) ... [2020-10-14 17:43:49,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 17:43:49,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 17:43:49,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 17:43:49,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 17:43:49,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:49" (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 17:43:49,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 17:43:49,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 17:43:49,702 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 17:43:49,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 17:43:49,702 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 17:43:49,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 17:43:49,702 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 17:43:49,702 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 17:43:49,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 17:43:49,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2020-10-14 17:43:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 17:43:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 17:43:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 17:43:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 17:43:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 17:43:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 17:43:49,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 17:43:50,227 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 17:43:50,228 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-14 17:43:50,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:43:50 BoogieIcfgContainer [2020-10-14 17:43:50,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 17:43:50,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 17:43:50,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 17:43:50,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 17:43:50,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:43:49" (1/3) ... [2020-10-14 17:43:50,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488fbf94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:43:50, skipping insertion in model container [2020-10-14 17:43:50,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:43:49" (2/3) ... [2020-10-14 17:43:50,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488fbf94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:43:50, skipping insertion in model container [2020-10-14 17:43:50,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:43:50" (3/3) ... [2020-10-14 17:43:50,244 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum_m5.c [2020-10-14 17:43:50,256 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 17:43:50,263 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 17:43:50,277 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 17:43:50,300 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 17:43:50,301 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 17:43:50,301 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 17:43:50,301 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 17:43:50,301 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 17:43:50,301 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 17:43:50,302 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 17:43:50,302 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 17:43:50,322 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-10-14 17:43:50,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 17:43:50,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:43:50,331 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 17:43:50,332 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:43:50,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:43:50,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1396756151, now seen corresponding path program 1 times [2020-10-14 17:43:50,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:43:50,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35375525] [2020-10-14 17:43:50,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:43:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:50,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:50,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:50,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:50,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:50,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:50,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:50,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:50,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:50,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:51,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:51,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:52,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:55,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:55,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 17:43:55,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 17:43:55,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 17:43:55,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:55,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:55,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:43:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:43:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 17:43:55,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 17:43:55,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:43:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:55,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:55,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:43:55,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:43:55,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:43:55,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 17:43:55,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:43:55,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:43:55,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:43:55,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:43:55,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:43:55,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:43:55,716 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 17:43:55,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35375525] [2020-10-14 17:43:55,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:43:55,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 17:43:55,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104809249] [2020-10-14 17:43:55,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 17:43:55,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:43:55,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 17:43:55,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:43:55,760 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 5 states. [2020-10-14 17:43:56,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:43:56,249 INFO L93 Difference]: Finished difference Result 120 states and 183 transitions. [2020-10-14 17:43:56,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 17:43:56,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-14 17:43:56,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:43:56,269 INFO L225 Difference]: With dead ends: 120 [2020-10-14 17:43:56,269 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 17:43:56,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:43:56,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 17:43:56,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2020-10-14 17:43:56,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 17:43:56,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-10-14 17:43:56,356 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 32 [2020-10-14 17:43:56,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:43:56,357 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-10-14 17:43:56,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 17:43:56,358 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-10-14 17:43:56,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 17:43:56,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:43:56,362 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] [2020-10-14 17:43:56,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 17:43:56,364 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:43:56,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:43:56,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1969821871, now seen corresponding path program 1 times [2020-10-14 17:43:56,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:43:56,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973745939] [2020-10-14 17:43:56,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:43:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:43:56,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:56,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:56,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:56,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:56,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:56,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:56,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:43:57,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:01,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:01,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 17:44:01,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 17:44:01,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:44:01,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:01,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:44:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:44:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:44:01,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:44:01,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:44:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:01,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:01,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:01,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:44:01,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:44:01,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:44:01,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:01,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:01,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:44:01,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:44:01,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:44:01,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:44:01,525 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 17:44:01,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973745939] [2020-10-14 17:44:01,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:44:01,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 17:44:01,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080438659] [2020-10-14 17:44:01,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 17:44:01,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:44:01,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 17:44:01,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:44:01,531 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 6 states. [2020-10-14 17:44:01,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:44:01,900 INFO L93 Difference]: Finished difference Result 115 states and 143 transitions. [2020-10-14 17:44:01,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 17:44:01,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-14 17:44:01,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:44:01,903 INFO L225 Difference]: With dead ends: 115 [2020-10-14 17:44:01,903 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 17:44:01,905 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 17:44:01,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 17:44:01,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-14 17:44:01,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 17:44:01,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2020-10-14 17:44:01,922 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 52 [2020-10-14 17:44:01,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:44:01,922 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2020-10-14 17:44:01,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 17:44:01,923 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2020-10-14 17:44:01,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 17:44:01,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:44:01,925 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:01,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 17:44:01,926 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:44:01,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:44:01,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1750779267, now seen corresponding path program 2 times [2020-10-14 17:44:01,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:44:01,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214746343] [2020-10-14 17:44:01,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:44:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:01,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:02,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:03,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:04,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:06,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:07,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:07,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 17:44:07,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:44:07,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5538 [2020-10-14 17:44:07,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:07,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:07,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-14 17:44:07,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:44:07,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 17:44:07,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:44:10,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:44:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:10,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:10,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:10,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:44:10,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:44:10,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:44:10,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:10,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:10,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:44:10,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:44:10,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:44:10,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:44:10,994 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:44:10,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214746343] [2020-10-14 17:44:10,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:44:10,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 17:44:10,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554114322] [2020-10-14 17:44:10,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 17:44:10,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:44:10,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 17:44:11,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1318, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 17:44:11,001 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand 38 states. [2020-10-14 17:44:13,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:44:13,224 INFO L93 Difference]: Finished difference Result 140 states and 159 transitions. [2020-10-14 17:44:13,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 17:44:13,224 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 72 [2020-10-14 17:44:13,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:44:13,227 INFO L225 Difference]: With dead ends: 140 [2020-10-14 17:44:13,228 INFO L226 Difference]: Without dead ends: 135 [2020-10-14 17:44:13,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=98, Invalid=1462, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 17:44:13,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-14 17:44:13,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 127. [2020-10-14 17:44:13,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-14 17:44:13,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 146 transitions. [2020-10-14 17:44:13,248 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 146 transitions. Word has length 72 [2020-10-14 17:44:13,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:44:13,248 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 146 transitions. [2020-10-14 17:44:13,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 17:44:13,249 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 146 transitions. [2020-10-14 17:44:13,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 17:44:13,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:44:13,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:13,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 17:44:13,252 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:44:13,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:44:13,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1929023163, now seen corresponding path program 3 times [2020-10-14 17:44:13,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:44:13,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779789091] [2020-10-14 17:44:13,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:44:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:13,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:13,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:13,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:13,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:13,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:13,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:14,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:18,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:18,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 17:44:18,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:44:18,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 17:44:18,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:18,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:18,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:44:18,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 17:44:18,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:44:18,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:44:18,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:44:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:18,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:18,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:18,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:44:18,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:44:18,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:44:18,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:18,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:44:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:44:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:44:18,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:44:18,349 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-14 17:44:18,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779789091] [2020-10-14 17:44:18,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:44:18,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 17:44:18,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206767074] [2020-10-14 17:44:18,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 17:44:18,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:44:18,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 17:44:18,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:44:18,354 INFO L87 Difference]: Start difference. First operand 127 states and 146 transitions. Second operand 10 states. [2020-10-14 17:44:19,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:44:19,039 INFO L93 Difference]: Finished difference Result 201 states and 236 transitions. [2020-10-14 17:44:19,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 17:44:19,040 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 74 [2020-10-14 17:44:19,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:44:19,042 INFO L225 Difference]: With dead ends: 201 [2020-10-14 17:44:19,043 INFO L226 Difference]: Without dead ends: 148 [2020-10-14 17:44:19,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:44:19,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-14 17:44:19,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 137. [2020-10-14 17:44:19,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-14 17:44:19,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 155 transitions. [2020-10-14 17:44:19,061 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 155 transitions. Word has length 74 [2020-10-14 17:44:19,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:44:19,062 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 155 transitions. [2020-10-14 17:44:19,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 17:44:19,062 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 155 transitions. [2020-10-14 17:44:19,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 17:44:19,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:44:19,064 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:19,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 17:44:19,065 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:44:19,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:44:19,065 INFO L82 PathProgramCache]: Analyzing trace with hash 2145459515, now seen corresponding path program 4 times [2020-10-14 17:44:19,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:44:19,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144547635] [2020-10-14 17:44:19,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:44:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:19,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:19,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:19,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:19,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:19,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:19,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:19,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:23,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:24,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:24,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 17:44:24,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 17:44:24,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 17:44:24,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:24,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:44:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 17:44:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:44:24,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:44:24,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:44:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:24,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:24,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:24,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:44:24,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:44:24,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:44:24,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:24,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:44:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:44:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:44:24,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:44:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-14 17:44:24,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144547635] [2020-10-14 17:44:24,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:44:24,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 17:44:24,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314014074] [2020-10-14 17:44:24,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 17:44:24,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:44:24,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 17:44:24,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:44:24,193 INFO L87 Difference]: Start difference. First operand 137 states and 155 transitions. Second operand 10 states. [2020-10-14 17:44:24,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:44:24,699 INFO L93 Difference]: Finished difference Result 229 states and 256 transitions. [2020-10-14 17:44:24,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 17:44:24,700 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 74 [2020-10-14 17:44:24,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:44:24,702 INFO L225 Difference]: With dead ends: 229 [2020-10-14 17:44:24,702 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 17:44:24,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 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 17:44:24,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 17:44:24,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2020-10-14 17:44:24,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-14 17:44:24,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2020-10-14 17:44:24,730 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 74 [2020-10-14 17:44:24,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:44:24,735 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2020-10-14 17:44:24,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 17:44:24,736 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2020-10-14 17:44:24,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 17:44:24,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:44:24,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:24,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 17:44:24,741 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:44:24,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:44:24,742 INFO L82 PathProgramCache]: Analyzing trace with hash -996610135, now seen corresponding path program 5 times [2020-10-14 17:44:24,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:44:24,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213268822] [2020-10-14 17:44:24,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:44:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:24,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:24,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:26,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:29,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:30,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:30,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 17:44:30,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 17:44:30,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6056 [2020-10-14 17:44:30,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:30,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:30,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 66 [2020-10-14 17:44:30,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:44:30,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 17:44:30,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:44:37,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:44:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:37,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:37,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:37,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:44:37,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:44:37,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:44:37,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:37,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:37,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:44:37,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:44:37,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:44:37,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:44:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:44:37,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213268822] [2020-10-14 17:44:37,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:44:37,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-10-14 17:44:37,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265123038] [2020-10-14 17:44:37,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-10-14 17:44:37,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:44:37,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-10-14 17:44:37,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=4405, Unknown=0, NotChecked=0, Total=4556 [2020-10-14 17:44:37,915 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand 68 states. [2020-10-14 17:44:43,144 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-14 17:44:46,353 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-14 17:44:48,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:44:48,025 INFO L93 Difference]: Finished difference Result 180 states and 199 transitions. [2020-10-14 17:44:48,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-10-14 17:44:48,026 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 92 [2020-10-14 17:44:48,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:44:48,028 INFO L225 Difference]: With dead ends: 180 [2020-10-14 17:44:48,028 INFO L226 Difference]: Without dead ends: 175 [2020-10-14 17:44:48,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=357, Invalid=9945, Unknown=0, NotChecked=0, Total=10302 [2020-10-14 17:44:48,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-14 17:44:48,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 163. [2020-10-14 17:44:48,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-14 17:44:48,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 182 transitions. [2020-10-14 17:44:48,053 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 182 transitions. Word has length 92 [2020-10-14 17:44:48,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:44:48,054 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 182 transitions. [2020-10-14 17:44:48,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-10-14 17:44:48,054 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 182 transitions. [2020-10-14 17:44:48,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 17:44:48,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:44:48,056 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:48,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 17:44:48,057 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:44:48,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:44:48,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1441093863, now seen corresponding path program 6 times [2020-10-14 17:44:48,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:44:48,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99476814] [2020-10-14 17:44:48,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:44:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:48,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:48,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:48,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:48,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:48,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:48,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:49,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:53,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:53,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 17:44:53,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:44:53,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:44:53,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:53,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:44:53,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 17:44:53,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 17:44:53,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:44:53,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:44:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:53,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:53,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:53,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:44:53,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:44:53,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:44:53,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:53,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:53,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:44:53,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:44:53,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:44:53,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:44:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 17:44:53,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99476814] [2020-10-14 17:44:53,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:44:53,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 17:44:53,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637854061] [2020-10-14 17:44:53,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 17:44:53,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:44:53,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 17:44:53,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-14 17:44:53,211 INFO L87 Difference]: Start difference. First operand 163 states and 182 transitions. Second operand 12 states. [2020-10-14 17:44:54,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:44:54,442 INFO L93 Difference]: Finished difference Result 255 states and 290 transitions. [2020-10-14 17:44:54,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 17:44:54,443 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-10-14 17:44:54,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:44:54,448 INFO L225 Difference]: With dead ends: 255 [2020-10-14 17:44:54,448 INFO L226 Difference]: Without dead ends: 186 [2020-10-14 17:44:54,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:44:54,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-14 17:44:54,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 171. [2020-10-14 17:44:54,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-14 17:44:54,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 189 transitions. [2020-10-14 17:44:54,486 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 189 transitions. Word has length 94 [2020-10-14 17:44:54,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:44:54,487 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 189 transitions. [2020-10-14 17:44:54,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 17:44:54,487 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 189 transitions. [2020-10-14 17:44:54,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 17:44:54,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:44:54,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:54,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 17:44:54,494 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:44:54,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:44:54,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1052522343, now seen corresponding path program 7 times [2020-10-14 17:44:54,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:44:54,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362656391] [2020-10-14 17:44:54,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:44:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:54,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:54,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:54,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:54,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:54,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:54,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:54,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:55,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:59,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:59,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 17:44:59,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 17:44:59,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 17:44:59,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:59,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:44:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 17:44:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 17:44:59,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:44:59,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:44:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:44:59,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:44:59,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:44:59,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:44:59,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:44:59,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:44:59,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:44:59,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:44:59,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:44:59,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:44:59,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:44:59,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:44:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 17:44:59,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362656391] [2020-10-14 17:44:59,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:44:59,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 17:44:59,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893954255] [2020-10-14 17:44:59,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 17:44:59,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:44:59,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 17:44:59,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-14 17:44:59,670 INFO L87 Difference]: Start difference. First operand 171 states and 189 transitions. Second operand 12 states. [2020-10-14 17:45:00,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:45:00,603 INFO L93 Difference]: Finished difference Result 283 states and 310 transitions. [2020-10-14 17:45:00,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 17:45:00,604 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-10-14 17:45:00,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:45:00,605 INFO L225 Difference]: With dead ends: 283 [2020-10-14 17:45:00,605 INFO L226 Difference]: Without dead ends: 124 [2020-10-14 17:45:00,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:45:00,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-14 17:45:00,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 114. [2020-10-14 17:45:00,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-14 17:45:00,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2020-10-14 17:45:00,627 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 94 [2020-10-14 17:45:00,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:45:00,628 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2020-10-14 17:45:00,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 17:45:00,628 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2020-10-14 17:45:00,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 17:45:00,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:45:00,630 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:00,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 17:45:00,630 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:45:00,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:45:00,631 INFO L82 PathProgramCache]: Analyzing trace with hash 122750677, now seen corresponding path program 8 times [2020-10-14 17:45:00,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:45:00,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806372183] [2020-10-14 17:45:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:45:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:45:00,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:00,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:02,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:05,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:45:05,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 17:45:05,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:45:05,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 17:45:05,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:45:05,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:45:05,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 86 [2020-10-14 17:45:05,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:45:05,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 17:45:05,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:45:21,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:45:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:45:21,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:21,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:45:21,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:45:21,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:45:21,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:45:21,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:45:21,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:45:21,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:45:21,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:45:21,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:45:21,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:45:21,944 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:45:21,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806372183] [2020-10-14 17:45:21,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:45:21,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2020-10-14 17:45:21,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348596123] [2020-10-14 17:45:21,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-10-14 17:45:21,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:45:21,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-10-14 17:45:21,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=7462, Unknown=0, NotChecked=0, Total=7656 [2020-10-14 17:45:21,961 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand 88 states. [2020-10-14 17:45:44,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:45:44,015 INFO L93 Difference]: Finished difference Result 221 states and 240 transitions. [2020-10-14 17:45:44,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2020-10-14 17:45:44,017 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 112 [2020-10-14 17:45:44,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:45:44,019 INFO L225 Difference]: With dead ends: 221 [2020-10-14 17:45:44,020 INFO L226 Difference]: Without dead ends: 216 [2020-10-14 17:45:44,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2363 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=493, Invalid=18139, Unknown=0, NotChecked=0, Total=18632 [2020-10-14 17:45:44,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-14 17:45:44,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 199. [2020-10-14 17:45:44,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-14 17:45:44,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 218 transitions. [2020-10-14 17:45:44,041 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 218 transitions. Word has length 112 [2020-10-14 17:45:44,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:45:44,041 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 218 transitions. [2020-10-14 17:45:44,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-10-14 17:45:44,041 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 218 transitions. [2020-10-14 17:45:44,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 17:45:44,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:45:44,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:44,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 17:45:44,042 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:45:44,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:45:44,043 INFO L82 PathProgramCache]: Analyzing trace with hash -521140973, now seen corresponding path program 9 times [2020-10-14 17:45:44,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:45:44,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500195632] [2020-10-14 17:45:44,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:45:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:45:44,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:44,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:44,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:44,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:44,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:44,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:47,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:49,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:45:49,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 17:45:49,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 17:45:49,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 17:45:49,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:45:49,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:45:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:45:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 17:45:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 17:45:49,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:45:49,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:45:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:45:49,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:49,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:45:49,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:45:49,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:45:49,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:45:49,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:45:49,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:45:49,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:45:49,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:45:49,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:45:49,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:45:49,309 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-14 17:45:49,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500195632] [2020-10-14 17:45:49,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:45:49,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 17:45:49,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787495714] [2020-10-14 17:45:49,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 17:45:49,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:45:49,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 17:45:49,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:45:49,317 INFO L87 Difference]: Start difference. First operand 199 states and 218 transitions. Second operand 14 states. [2020-10-14 17:45:51,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:45:51,387 INFO L93 Difference]: Finished difference Result 309 states and 344 transitions. [2020-10-14 17:45:51,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 17:45:51,388 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 114 [2020-10-14 17:45:51,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:45:51,391 INFO L225 Difference]: With dead ends: 309 [2020-10-14 17:45:51,391 INFO L226 Difference]: Without dead ends: 224 [2020-10-14 17:45:51,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:45:51,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-14 17:45:51,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 205. [2020-10-14 17:45:51,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-14 17:45:51,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 223 transitions. [2020-10-14 17:45:51,408 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 223 transitions. Word has length 114 [2020-10-14 17:45:51,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:45:51,410 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 223 transitions. [2020-10-14 17:45:51,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 17:45:51,410 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 223 transitions. [2020-10-14 17:45:51,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 17:45:51,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:45:51,411 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:51,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 17:45:51,412 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:45:51,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:45:51,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1278528621, now seen corresponding path program 10 times [2020-10-14 17:45:51,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:45:51,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401254824] [2020-10-14 17:45:51,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:45:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:45:51,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:51,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:51,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:51,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:51,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:51,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:51,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:54,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:56,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:45:56,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 17:45:56,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 17:45:56,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 17:45:56,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:45:56,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:45:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:45:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 17:45:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 17:45:56,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:45:56,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:45:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:45:56,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:56,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:45:56,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:45:56,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:45:56,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:45:56,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:45:56,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:45:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:45:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:45:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:45:56,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:45:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-14 17:45:56,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401254824] [2020-10-14 17:45:56,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:45:56,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 17:45:56,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340058137] [2020-10-14 17:45:56,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 17:45:56,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:45:56,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 17:45:56,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:45:56,600 INFO L87 Difference]: Start difference. First operand 205 states and 223 transitions. Second operand 14 states. [2020-10-14 17:45:57,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:45:57,741 INFO L93 Difference]: Finished difference Result 337 states and 364 transitions. [2020-10-14 17:45:57,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 17:45:57,743 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 114 [2020-10-14 17:45:57,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:45:57,744 INFO L225 Difference]: With dead ends: 337 [2020-10-14 17:45:57,745 INFO L226 Difference]: Without dead ends: 144 [2020-10-14 17:45:57,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-14 17:45:57,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-14 17:45:57,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 134. [2020-10-14 17:45:57,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 17:45:57,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 144 transitions. [2020-10-14 17:45:57,756 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 144 transitions. Word has length 114 [2020-10-14 17:45:57,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:45:57,756 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 144 transitions. [2020-10-14 17:45:57,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 17:45:57,757 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 144 transitions. [2020-10-14 17:45:57,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 17:45:57,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:45:57,758 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:57,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 17:45:57,759 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:45:57,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:45:57,759 INFO L82 PathProgramCache]: Analyzing trace with hash -349405183, now seen corresponding path program 11 times [2020-10-14 17:45:57,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:45:57,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592881610] [2020-10-14 17:45:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:45:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:45:57,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:45:57,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:46:01,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:46:05,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:46:05,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 17:46:05,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 17:46:05,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8049 [2020-10-14 17:46:05,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:46:05,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:46:05,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 107 [2020-10-14 17:46:05,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:46:05,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 17:46:05,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:46:07,857 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-10-14 17:46:08,029 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-10-14 17:46:08,236 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-10-14 17:46:08,444 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-14 17:46:08,654 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-10-14 17:46:08,870 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-14 17:46:09,242 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2020-10-14 17:46:09,641 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2020-10-14 17:46:10,120 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-10-14 17:46:10,463 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-10-14 17:46:10,820 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-10-14 17:46:11,187 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-10-14 17:46:11,596 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-10-14 17:46:11,974 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2020-10-14 17:46:12,364 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2020-10-14 17:46:12,748 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2020-10-14 17:46:13,167 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2020-10-14 17:46:13,476 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-10-14 17:46:13,867 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2020-10-14 17:46:14,209 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-10-14 17:46:14,601 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2020-10-14 17:46:15,005 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2020-10-14 17:46:15,426 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-10-14 17:46:15,884 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-10-14 17:46:16,309 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-10-14 17:46:16,787 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2020-10-14 17:46:17,206 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2020-10-14 17:46:17,709 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2020-10-14 17:46:18,062 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2020-10-14 17:46:18,537 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2020-10-14 17:46:18,995 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 41 [2020-10-14 17:46:19,436 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2020-10-14 17:46:19,905 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-10-14 17:46:20,378 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-10-14 17:46:20,879 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2020-10-14 17:46:21,322 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44 [2020-10-14 17:46:21,764 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2020-10-14 17:46:22,182 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2020-10-14 17:46:22,594 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2020-10-14 17:46:23,092 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2020-10-14 17:46:23,663 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2020-10-14 17:46:24,195 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2020-10-14 17:46:24,744 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-10-14 17:46:25,286 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-10-14 17:46:25,815 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2020-10-14 17:46:26,359 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2020-10-14 17:46:26,898 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-10-14 17:46:27,397 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-10-14 17:46:28,434 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2020-10-14 17:46:28,949 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-10-14 17:46:29,461 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2020-10-14 17:46:29,993 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-10-14 17:46:30,514 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-10-14 17:46:31,077 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-14 17:46:31,584 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2020-10-14 17:46:32,092 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2020-10-14 17:46:33,029 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2020-10-14 17:46:33,751 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49 [2020-10-14 17:46:34,326 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-10-14 17:46:34,928 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-10-14 17:46:35,513 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-10-14 17:46:36,038 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2020-10-14 17:46:36,528 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-10-14 17:46:36,998 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-10-14 17:46:37,482 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-14 17:46:46,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:46:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:46:46,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:46:46,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:46:46,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:46:46,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:46:46,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:46:46,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:46:46,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:46:46,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:46:46,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:46:46,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:46:46,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:46:47,341 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 22 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:46:47,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592881610] [2020-10-14 17:46:47,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:46:47,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2020-10-14 17:46:47,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148883431] [2020-10-14 17:46:47,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2020-10-14 17:46:47,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:46:47,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2020-10-14 17:46:47,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=10587, Unknown=0, NotChecked=0, Total=11130 [2020-10-14 17:46:47,349 INFO L87 Difference]: Start difference. First operand 134 states and 144 transitions. Second operand 106 states. [2020-10-14 17:46:48,131 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 3 [2020-10-14 17:46:49,094 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 15 [2020-10-14 17:46:52,111 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-14 17:46:52,902 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2020-10-14 17:46:54,282 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-14 17:46:56,208 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-14 17:46:57,194 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-14 17:46:58,069 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2020-10-14 17:46:59,827 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 82 [2020-10-14 17:47:01,383 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 88 [2020-10-14 17:47:02,946 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 87 [2020-10-14 17:47:04,034 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2020-10-14 17:47:05,203 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2020-10-14 17:47:06,084 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2020-10-14 17:47:07,069 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2020-10-14 17:47:07,958 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-10-14 17:47:08,813 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-14 17:47:09,648 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-14 17:47:10,345 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-14 17:47:11,044 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-10-14 17:47:12,183 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 65 [2020-10-14 17:47:12,968 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 45 [2020-10-14 17:47:13,838 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 41 [2020-10-14 17:47:14,813 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 49 [2020-10-14 17:47:15,797 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 47 [2020-10-14 17:47:16,745 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 47 [2020-10-14 17:47:17,758 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 45 [2020-10-14 17:47:19,616 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 127 DAG size of output: 107 [2020-10-14 17:47:21,522 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 127 DAG size of output: 107 [2020-10-14 17:47:23,003 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 96 [2020-10-14 17:47:24,563 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 90 [2020-10-14 17:47:25,855 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-14 17:47:26,982 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2020-10-14 17:47:28,773 WARN L193 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 98 [2020-10-14 17:47:29,626 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 44 [2020-10-14 17:47:30,910 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-14 17:47:31,838 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 41 [2020-10-14 17:47:33,694 WARN L193 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 99 [2020-10-14 17:47:35,269 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 88 [2020-10-14 17:47:37,101 WARN L193 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 89 [2020-10-14 17:47:37,935 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 42 [2020-10-14 17:47:39,327 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2020-10-14 17:47:40,344 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 49 [2020-10-14 17:47:40,931 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-14 17:47:42,049 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2020-10-14 17:47:42,920 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 47 [2020-10-14 17:47:43,948 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77