/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/array-crafted/zero_sum3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 08:43:31,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 08:43:31,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 08:43:31,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 08:43:31,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 08:43:31,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 08:43:31,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 08:43:31,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 08:43:31,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 08:43:31,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 08:43:31,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 08:43:31,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 08:43:31,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 08:43:31,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 08:43:31,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 08:43:31,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 08:43:31,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 08:43:31,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 08:43:31,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 08:43:31,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 08:43:31,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 08:43:31,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 08:43:31,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 08:43:32,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 08:43:32,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 08:43:32,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 08:43:32,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 08:43:32,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 08:43:32,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 08:43:32,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 08:43:32,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 08:43:32,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 08:43:32,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 08:43:32,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 08:43:32,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 08:43:32,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 08:43:32,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 08:43:32,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 08:43:32,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 08:43:32,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 08:43:32,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 08:43:32,037 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 [2020-10-28 08:43:32,105 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 08:43:32,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 08:43:32,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 08:43:32,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 08:43:32,111 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 08:43:32,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 08:43:32,112 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 08:43:32,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 08:43:32,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 08:43:32,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 08:43:32,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 08:43:32,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 08:43:32,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 08:43:32,115 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 08:43:32,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 08:43:32,116 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 08:43:32,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 08:43:32,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 08:43:32,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 08:43:32,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 08:43:32,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 08:43:32,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:43:32,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 08:43:32,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 08:43:32,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 08:43:32,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 08:43:32,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 08:43:32,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 08:43:32,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 08:43:32,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 08:43:32,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 08:43:32,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 08:43:32,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 08:43:32,612 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 08:43:32,613 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 08:43:32,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum3.c [2020-10-28 08:43:32,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f38ff2c9/c08527fed66a4376a437d76829f5756f/FLAG207dbefa5 [2020-10-28 08:43:33,401 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 08:43:33,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/zero_sum3.c [2020-10-28 08:43:33,412 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f38ff2c9/c08527fed66a4376a437d76829f5756f/FLAG207dbefa5 [2020-10-28 08:43:33,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f38ff2c9/c08527fed66a4376a437d76829f5756f [2020-10-28 08:43:33,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 08:43:33,776 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 08:43:33,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 08:43:33,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 08:43:33,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 08:43:33,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:43:33" (1/1) ... [2020-10-28 08:43:33,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@562d7b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:33, skipping insertion in model container [2020-10-28 08:43:33,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:43:33" (1/1) ... [2020-10-28 08:43:33,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 08:43:33,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 08:43:34,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:43:34,063 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 08:43:34,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:43:34,110 INFO L208 MainTranslator]: Completed translation [2020-10-28 08:43:34,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:34 WrapperNode [2020-10-28 08:43:34,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 08:43:34,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 08:43:34,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 08:43:34,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 08:43:34,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:34" (1/1) ... [2020-10-28 08:43:34,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:34" (1/1) ... [2020-10-28 08:43:34,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:34" (1/1) ... [2020-10-28 08:43:34,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:34" (1/1) ... [2020-10-28 08:43:34,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:34" (1/1) ... [2020-10-28 08:43:34,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:34" (1/1) ... [2020-10-28 08:43:34,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:34" (1/1) ... [2020-10-28 08:43:34,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 08:43:34,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 08:43:34,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 08:43:34,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 08:43:34,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:34" (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 [2020-10-28 08:43:34,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 08:43:34,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 08:43:34,240 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 08:43:34,241 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 08:43:34,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 08:43:34,241 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 08:43:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 08:43:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 08:43:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 08:43:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 08:43:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 08:43:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 08:43:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2020-10-28 08:43:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 08:43:34,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 08:43:34,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 08:43:34,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 08:43:34,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 08:43:34,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 08:43:34,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 08:43:34,608 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 08:43:34,609 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-28 08:43:34,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:43:34 BoogieIcfgContainer [2020-10-28 08:43:34,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 08:43:34,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 08:43:34,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 08:43:34,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 08:43:34,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:43:33" (1/3) ... [2020-10-28 08:43:34,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5149f61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:43:34, skipping insertion in model container [2020-10-28 08:43:34,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:34" (2/3) ... [2020-10-28 08:43:34,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5149f61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:43:34, skipping insertion in model container [2020-10-28 08:43:34,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:43:34" (3/3) ... [2020-10-28 08:43:34,626 INFO L111 eAbstractionObserver]: Analyzing ICFG zero_sum3.c [2020-10-28 08:43:34,644 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 08:43:34,658 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 08:43:34,695 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 08:43:34,757 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 08:43:34,757 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 08:43:34,758 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 08:43:34,758 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 08:43:34,758 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 08:43:34,758 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 08:43:34,758 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 08:43:34,758 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 08:43:34,777 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-28 08:43:34,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 08:43:34,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:34,785 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] [2020-10-28 08:43:34,785 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:34,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:34,792 INFO L82 PathProgramCache]: Analyzing trace with hash 924121920, now seen corresponding path program 1 times [2020-10-28 08:43:34,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:34,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094725960] [2020-10-28 08:43:34,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:35,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:35,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:35,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:35,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:35,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:35,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:35,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:35,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:37,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:37,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 08:43:37,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 08:43:37,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2143 [2020-10-28 08:43:37,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:37,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:37,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:37,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:43:37,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:37,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 08:43:37,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:37,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:37,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:37,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:37,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:37,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 08:43:37,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:37,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:37,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:37,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:37,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:37,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:43:37,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094725960] [2020-10-28 08:43:37,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:43:37,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 08:43:37,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351495486] [2020-10-28 08:43:37,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 08:43:37,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:37,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 08:43:37,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:43:37,381 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-28 08:43:37,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:37,606 INFO L93 Difference]: Finished difference Result 76 states and 105 transitions. [2020-10-28 08:43:37,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 08:43:37,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-28 08:43:37,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:37,621 INFO L225 Difference]: With dead ends: 76 [2020-10-28 08:43:37,622 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 08:43:37,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:43:37,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 08:43:37,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-28 08:43:37,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-28 08:43:37,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-28 08:43:37,690 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 25 [2020-10-28 08:43:37,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:37,691 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-28 08:43:37,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 08:43:37,691 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-28 08:43:37,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 08:43:37,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:37,692 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] [2020-10-28 08:43:37,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 08:43:37,693 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:37,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:37,696 INFO L82 PathProgramCache]: Analyzing trace with hash -538220782, now seen corresponding path program 1 times [2020-10-28 08:43:37,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:37,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060676266] [2020-10-28 08:43:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:37,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:37,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:37,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:37,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:37,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:37,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:37,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:38,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:42,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:42,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 08:43:42,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 08:43:42,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 08:43:42,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:42,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:42,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:43:42,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:43:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:43:42,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:42,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:42,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:42,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:42,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:42,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:42,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:43:42,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:42,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:42,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:42,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:42,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:42,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:43:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:43:42,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060676266] [2020-10-28 08:43:42,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:43:42,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 08:43:42,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107995899] [2020-10-28 08:43:42,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:43:42,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:42,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:43:42,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:43:42,833 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 5 states. [2020-10-28 08:43:43,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:43,033 INFO L93 Difference]: Finished difference Result 66 states and 82 transitions. [2020-10-28 08:43:43,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:43:43,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-28 08:43:43,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:43,035 INFO L225 Difference]: With dead ends: 66 [2020-10-28 08:43:43,035 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 08:43:43,036 INFO L677 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 [2020-10-28 08:43:43,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 08:43:43,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2020-10-28 08:43:43,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 08:43:43,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-28 08:43:43,052 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 25 [2020-10-28 08:43:43,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:43,053 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-28 08:43:43,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:43:43,053 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-28 08:43:43,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 08:43:43,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:43,054 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] [2020-10-28 08:43:43,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 08:43:43,055 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:43,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:43,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1776443102, now seen corresponding path program 1 times [2020-10-28 08:43:43,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:43,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217396110] [2020-10-28 08:43:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:43,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:43,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:43,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:43,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:43,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:43,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:44,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:48,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:48,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 08:43:48,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 08:43:48,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 08:43:48,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:48,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:48,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:43:48,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:43:48,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:43:48,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:48,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:48,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:48,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:48,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:48,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:48,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:43:48,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:48,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:48,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:48,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:48,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:48,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 08:43:48,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217396110] [2020-10-28 08:43:48,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:43:48,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:43:48,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509476203] [2020-10-28 08:43:48,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:43:48,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:48,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:43:48,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:43:48,178 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 4 states. [2020-10-28 08:43:48,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:48,326 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2020-10-28 08:43:48,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:43:48,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-28 08:43:48,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:48,328 INFO L225 Difference]: With dead ends: 71 [2020-10-28 08:43:48,328 INFO L226 Difference]: Without dead ends: 41 [2020-10-28 08:43:48,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:43:48,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-28 08:43:48,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-28 08:43:48,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-28 08:43:48,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-10-28 08:43:48,338 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 37 [2020-10-28 08:43:48,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:48,338 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-10-28 08:43:48,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:43:48,339 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-10-28 08:43:48,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 08:43:48,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:48,340 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] [2020-10-28 08:43:48,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 08:43:48,341 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:48,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:48,341 INFO L82 PathProgramCache]: Analyzing trace with hash 156019424, now seen corresponding path program 1 times [2020-10-28 08:43:48,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:48,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805651718] [2020-10-28 08:43:48,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:48,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:48,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:48,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:48,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:48,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:48,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:50,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:53,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:53,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 08:43:53,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 08:43:53,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 08:43:53,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:53,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:43:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:43:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 08:43:53,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:53,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:53,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:53,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:53,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:53,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:53,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:43:53,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:53,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:53,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:53,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:53,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:53,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 08:43:53,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805651718] [2020-10-28 08:43:53,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:53,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:43:53,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752252108] [2020-10-28 08:43:53,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:43:53,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:53,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:43:53,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:43:53,455 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 6 states. [2020-10-28 08:43:53,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:53,730 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2020-10-28 08:43:53,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:43:53,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-10-28 08:43:53,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:53,732 INFO L225 Difference]: With dead ends: 78 [2020-10-28 08:43:53,732 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 08:43:53,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:43:53,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 08:43:53,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-28 08:43:53,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-28 08:43:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2020-10-28 08:43:53,752 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 39 [2020-10-28 08:43:53,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:53,752 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2020-10-28 08:43:53,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:43:53,752 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2020-10-28 08:43:53,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 08:43:53,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:53,760 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 08:43:53,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 08:43:53,761 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:53,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:53,762 INFO L82 PathProgramCache]: Analyzing trace with hash 973835692, now seen corresponding path program 2 times [2020-10-28 08:43:53,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:53,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968365996] [2020-10-28 08:43:53,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:53,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:53,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:54,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:54,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:56,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:57,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:58,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:58,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:58,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:58,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-28 08:43:58,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 08:43:58,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 08:43:58,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:58,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:58,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:43:58,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:43:58,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:43:58,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:58,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:58,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:58,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:58,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:58,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:58,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:43:58,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:58,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:58,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:43:58,898 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 08:43:58,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968365996] [2020-10-28 08:43:58,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:58,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:43:58,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707651189] [2020-10-28 08:43:58,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:43:58,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:58,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:43:58,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:43:58,902 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 5 states. [2020-10-28 08:43:59,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:59,037 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2020-10-28 08:43:59,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:43:59,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-28 08:43:59,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:59,039 INFO L225 Difference]: With dead ends: 96 [2020-10-28 08:43:59,039 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 08:43:59,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:43:59,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 08:43:59,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-28 08:43:59,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-28 08:43:59,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-10-28 08:43:59,058 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 51 [2020-10-28 08:43:59,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:59,058 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-10-28 08:43:59,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:43:59,058 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-10-28 08:43:59,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 08:43:59,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:59,061 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 08:43:59,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 08:43:59,062 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:59,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:59,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1865920046, now seen corresponding path program 3 times [2020-10-28 08:43:59,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:59,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304310197] [2020-10-28 08:43:59,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:59,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:59,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:59,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:00,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:01,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:01,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:01,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:02,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:03,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:03,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:04,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:04,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 08:44:04,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 08:44:04,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 08:44:04,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:04,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:04,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-28 08:44:04,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:44:04,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 08:44:04,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:05,218 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-10-28 08:44:06,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:44:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:06,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:06,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:06,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:44:06,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:44:06,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:44:06,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:06,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:06,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:44:06,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:44:06,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:44:06,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:06,905 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 08:44:06,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304310197] [2020-10-28 08:44:06,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:44:06,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-28 08:44:06,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299975025] [2020-10-28 08:44:06,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-28 08:44:06,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:44:06,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-28 08:44:06,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=956, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 08:44:06,908 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 33 states. [2020-10-28 08:44:07,808 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2020-10-28 08:44:08,069 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2020-10-28 08:44:08,326 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-28 08:44:08,923 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-10-28 08:44:09,294 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-28 08:44:09,511 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-10-28 08:44:10,985 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-10-28 08:44:12,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:44:12,074 INFO L93 Difference]: Finished difference Result 135 states and 154 transitions. [2020-10-28 08:44:12,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-28 08:44:12,080 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 53 [2020-10-28 08:44:12,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:44:12,083 INFO L225 Difference]: With dead ends: 135 [2020-10-28 08:44:12,083 INFO L226 Difference]: Without dead ends: 129 [2020-10-28 08:44:12,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=330, Invalid=2750, Unknown=0, NotChecked=0, Total=3080 [2020-10-28 08:44:12,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-28 08:44:12,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 87. [2020-10-28 08:44:12,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 08:44:12,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 100 transitions. [2020-10-28 08:44:12,103 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 100 transitions. Word has length 53 [2020-10-28 08:44:12,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:44:12,104 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 100 transitions. [2020-10-28 08:44:12,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-28 08:44:12,104 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 100 transitions. [2020-10-28 08:44:12,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 08:44:12,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:44:12,105 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-28 08:44:12,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 08:44:12,105 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:44:12,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:44:12,106 INFO L82 PathProgramCache]: Analyzing trace with hash -852427024, now seen corresponding path program 4 times [2020-10-28 08:44:12,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:44:12,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778036608] [2020-10-28 08:44:12,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:44:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:12,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:12,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:12,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:12,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:12,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:15,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:17,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:17,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 08:44:17,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:44:17,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:44:17,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:17,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:17,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:44:17,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 08:44:17,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:44:17,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:17,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:44:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:17,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:17,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:17,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:44:17,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:44:17,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:44:17,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:17,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:44:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:44:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:44:17,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:17,267 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-28 08:44:17,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778036608] [2020-10-28 08:44:17,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:44:17,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:44:17,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602579469] [2020-10-28 08:44:17,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:44:17,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:44:17,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:44:17,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:44:17,273 INFO L87 Difference]: Start difference. First operand 87 states and 100 transitions. Second operand 10 states. [2020-10-28 08:44:17,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:44:17,940 INFO L93 Difference]: Finished difference Result 159 states and 185 transitions. [2020-10-28 08:44:17,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:44:17,941 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-10-28 08:44:17,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:44:17,944 INFO L225 Difference]: With dead ends: 159 [2020-10-28 08:44:17,944 INFO L226 Difference]: Without dead ends: 112 [2020-10-28 08:44:17,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:44:17,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-28 08:44:17,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 85. [2020-10-28 08:44:17,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 08:44:17,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2020-10-28 08:44:17,964 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 55 [2020-10-28 08:44:17,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:44:17,964 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2020-10-28 08:44:17,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:44:17,964 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2020-10-28 08:44:17,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 08:44:17,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:44:17,966 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-28 08:44:17,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 08:44:17,966 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:44:17,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:44:17,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1714882640, now seen corresponding path program 5 times [2020-10-28 08:44:17,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:44:17,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835486421] [2020-10-28 08:44:17,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:44:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:17,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:18,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:18,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:18,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:18,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:19,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:22,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:22,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 08:44:22,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:44:22,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:44:22,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:22,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:44:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:44:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 08:44:22,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:23,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:44:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:23,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:23,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:23,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:44:23,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:44:23,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:44:23,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:23,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:23,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:44:23,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:44:23,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:44:23,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:23,128 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-28 08:44:23,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835486421] [2020-10-28 08:44:23,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:44:23,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:44:23,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080281641] [2020-10-28 08:44:23,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:44:23,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:44:23,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:44:23,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:44:23,130 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand 10 states. [2020-10-28 08:44:23,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:44:23,536 INFO L93 Difference]: Finished difference Result 172 states and 193 transitions. [2020-10-28 08:44:23,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:44:23,536 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-10-28 08:44:23,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:44:23,540 INFO L225 Difference]: With dead ends: 172 [2020-10-28 08:44:23,540 INFO L226 Difference]: Without dead ends: 88 [2020-10-28 08:44:23,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:44:23,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-28 08:44:23,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-28 08:44:23,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 08:44:23,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2020-10-28 08:44:23,580 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 55 [2020-10-28 08:44:23,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:44:23,580 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2020-10-28 08:44:23,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:44:23,580 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2020-10-28 08:44:23,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 08:44:23,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:44:23,582 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-28 08:44:23,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 08:44:23,585 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:44:23,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:44:23,586 INFO L82 PathProgramCache]: Analyzing trace with hash 588056370, now seen corresponding path program 6 times [2020-10-28 08:44:23,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:44:23,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463160122] [2020-10-28 08:44:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:44:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:23,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:23,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:23,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:23,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:23,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:28,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:28,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 08:44:28,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:44:28,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 08:44:28,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:28,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:44:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:44:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 08:44:28,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:28,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:44:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:28,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:28,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:28,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:44:28,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:44:28,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:44:28,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:28,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:28,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:44:28,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:44:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:44:28,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:28,747 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-28 08:44:28,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463160122] [2020-10-28 08:44:28,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:44:28,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:44:28,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063923029] [2020-10-28 08:44:28,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:44:28,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:44:28,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:44:28,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:44:28,756 INFO L87 Difference]: Start difference. First operand 87 states and 97 transitions. Second operand 10 states. [2020-10-28 08:44:29,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:44:29,153 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2020-10-28 08:44:29,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:44:29,153 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-28 08:44:29,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:44:29,154 INFO L225 Difference]: With dead ends: 127 [2020-10-28 08:44:29,154 INFO L226 Difference]: Without dead ends: 68 [2020-10-28 08:44:29,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:44:29,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-28 08:44:29,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-28 08:44:29,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-28 08:44:29,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2020-10-28 08:44:29,169 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 57 [2020-10-28 08:44:29,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:44:29,169 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2020-10-28 08:44:29,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:44:29,170 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2020-10-28 08:44:29,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 08:44:29,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:44:29,171 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 08:44:29,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 08:44:29,171 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:44:29,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:44:29,172 INFO L82 PathProgramCache]: Analyzing trace with hash 316100860, now seen corresponding path program 7 times [2020-10-28 08:44:29,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:44:29,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950092230] [2020-10-28 08:44:29,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:44:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:29,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:29,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:30,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:32,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:34,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:34,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:34,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 08:44:34,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:44:34,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5148 [2020-10-28 08:44:34,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:34,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-28 08:44:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:44:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 08:44:34,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:38,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:44:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:38,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:38,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:38,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:44:38,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:44:38,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:44:38,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:38,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:38,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:44:38,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:44:38,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:44:38,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:38,161 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 08:44:38,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950092230] [2020-10-28 08:44:38,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:44:38,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-28 08:44:38,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48540283] [2020-10-28 08:44:38,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-28 08:44:38,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:44:38,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-28 08:44:38,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1835, Unknown=0, NotChecked=0, Total=1980 [2020-10-28 08:44:38,164 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 45 states. [2020-10-28 08:44:38,350 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-10-28 08:44:39,712 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-10-28 08:44:40,318 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-10-28 08:44:41,408 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-10-28 08:44:42,496 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2020-10-28 08:44:42,781 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2020-10-28 08:44:43,462 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2020-10-28 08:44:44,910 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2020-10-28 08:44:45,170 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-28 08:44:45,449 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-10-28 08:44:45,698 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 43 [2020-10-28 08:44:46,273 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2020-10-28 08:44:47,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:44:47,651 INFO L93 Difference]: Finished difference Result 138 states and 155 transitions. [2020-10-28 08:44:47,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-28 08:44:47,651 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 67 [2020-10-28 08:44:47,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:44:47,653 INFO L225 Difference]: With dead ends: 138 [2020-10-28 08:44:47,653 INFO L226 Difference]: Without dead ends: 130 [2020-10-28 08:44:47,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1684 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=630, Invalid=7202, Unknown=0, NotChecked=0, Total=7832 [2020-10-28 08:44:47,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-28 08:44:47,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 117. [2020-10-28 08:44:47,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-28 08:44:47,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2020-10-28 08:44:47,689 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 67 [2020-10-28 08:44:47,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:44:47,690 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2020-10-28 08:44:47,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-28 08:44:47,690 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2020-10-28 08:44:47,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 08:44:47,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:44:47,692 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-28 08:44:47,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 08:44:47,692 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:44:47,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:44:47,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1098807746, now seen corresponding path program 8 times [2020-10-28 08:44:47,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:44:47,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018719237] [2020-10-28 08:44:47,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:44:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:47,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:47,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:47,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:48,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:52,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:52,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 08:44:52,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:44:52,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:44:52,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:52,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:52,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:44:52,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:44:52,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:44:52,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:52,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:44:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:52,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:52,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:52,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:44:52,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:44:52,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:44:52,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:52,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:44:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:44:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:44:52,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:52,855 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-28 08:44:52,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018719237] [2020-10-28 08:44:52,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:44:52,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:44:52,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151019631] [2020-10-28 08:44:52,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:44:52,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:44:52,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:44:52,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:44:52,858 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand 12 states. [2020-10-28 08:44:53,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:44:53,430 INFO L93 Difference]: Finished difference Result 239 states and 268 transitions. [2020-10-28 08:44:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 08:44:53,431 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-28 08:44:53,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:44:53,432 INFO L225 Difference]: With dead ends: 239 [2020-10-28 08:44:53,432 INFO L226 Difference]: Without dead ends: 120 [2020-10-28 08:44:53,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:44:53,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-28 08:44:53,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2020-10-28 08:44:53,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-28 08:44:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 133 transitions. [2020-10-28 08:44:53,451 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 133 transitions. Word has length 69 [2020-10-28 08:44:53,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:44:53,451 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 133 transitions. [2020-10-28 08:44:53,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:44:53,452 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 133 transitions. [2020-10-28 08:44:53,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 08:44:53,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:44:53,453 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-28 08:44:53,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 08:44:53,453 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:44:53,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:44:53,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1030441536, now seen corresponding path program 9 times [2020-10-28 08:44:53,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:44:53,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83978522] [2020-10-28 08:44:53,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:44:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:53,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:53,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:53,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:53,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:54,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:54,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:54,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:58,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:58,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 08:44:58,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 08:44:58,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:44:58,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:58,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:58,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:44:58,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:44:58,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 08:44:58,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:58,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:44:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:58,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:44:58,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:44:58,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:44:58,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:44:58,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:44:58,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:44:58,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:44:58,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:44:58,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:44:58,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:44:58,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:44:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-28 08:44:58,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83978522] [2020-10-28 08:44:58,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:44:58,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:44:58,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501664601] [2020-10-28 08:44:58,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:44:58,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:44:58,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:44:58,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:44:58,630 INFO L87 Difference]: Start difference. First operand 119 states and 133 transitions. Second operand 12 states. [2020-10-28 08:44:59,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:44:59,276 INFO L93 Difference]: Finished difference Result 169 states and 192 transitions. [2020-10-28 08:44:59,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:44:59,278 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-10-28 08:44:59,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:44:59,279 INFO L225 Difference]: With dead ends: 169 [2020-10-28 08:44:59,279 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 08:44:59,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:44:59,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 08:44:59,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-28 08:44:59,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-28 08:44:59,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2020-10-28 08:44:59,300 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 71 [2020-10-28 08:44:59,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:44:59,301 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2020-10-28 08:44:59,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:44:59,301 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2020-10-28 08:44:59,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-28 08:44:59,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:44:59,312 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 08:44:59,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 08:44:59,313 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:44:59,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:44:59,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1932627126, now seen corresponding path program 10 times [2020-10-28 08:44:59,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:44:59,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973467691] [2020-10-28 08:44:59,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:44:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:44:59,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:00,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:02,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:03,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:04,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:04,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 08:45:04,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:45:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 08:45:04,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:04,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-10-28 08:45:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:45:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 08:45:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:09,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:45:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:09,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:09,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:09,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:45:09,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:45:09,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:45:09,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:09,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:09,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:45:09,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:09,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:45:09,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:45:09,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973467691] [2020-10-28 08:45:09,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:45:09,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-28 08:45:09,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164904112] [2020-10-28 08:45:09,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-28 08:45:09,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:45:09,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-28 08:45:09,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=3223, Unknown=0, NotChecked=0, Total=3422 [2020-10-28 08:45:09,910 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand 59 states. [2020-10-28 08:45:11,821 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-10-28 08:45:12,237 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2020-10-28 08:45:12,568 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 39 [2020-10-28 08:45:13,039 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2020-10-28 08:45:13,539 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2020-10-28 08:45:15,111 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 35 [2020-10-28 08:45:15,549 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 35 [2020-10-28 08:45:15,970 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-10-28 08:45:16,497 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-28 08:45:17,090 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-28 08:45:17,355 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-10-28 08:45:17,928 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2020-10-28 08:45:22,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:45:22,276 INFO L93 Difference]: Finished difference Result 211 states and 233 transitions. [2020-10-28 08:45:22,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-10-28 08:45:22,277 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 81 [2020-10-28 08:45:22,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:45:22,279 INFO L225 Difference]: With dead ends: 211 [2020-10-28 08:45:22,279 INFO L226 Difference]: Without dead ends: 87 [2020-10-28 08:45:22,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2057 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=606, Invalid=9494, Unknown=0, NotChecked=0, Total=10100 [2020-10-28 08:45:22,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-28 08:45:22,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-10-28 08:45:22,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-28 08:45:22,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2020-10-28 08:45:22,293 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 81 [2020-10-28 08:45:22,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:45:22,293 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2020-10-28 08:45:22,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-10-28 08:45:22,293 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2020-10-28 08:45:22,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 08:45:22,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:45:22,294 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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] [2020-10-28 08:45:22,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 08:45:22,294 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:45:22,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:45:22,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1796146446, now seen corresponding path program 11 times [2020-10-28 08:45:22,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:45:22,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832760035] [2020-10-28 08:45:22,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:45:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:22,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:22,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:22,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:22,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:23,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:27,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:27,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 08:45:27,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:45:27,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 08:45:27,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:27,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:27,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:45:27,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 08:45:27,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 08:45:27,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:27,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:45:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:27,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:27,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:27,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:45:27,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:45:27,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:45:27,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:27,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:27,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:45:27,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:27,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:45:27,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:45:27,545 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-28 08:45:27,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832760035] [2020-10-28 08:45:27,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:45:27,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:45:27,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723183060] [2020-10-28 08:45:27,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:45:27,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:45:27,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:45:27,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:45:27,548 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand 14 states. [2020-10-28 08:45:28,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:45:28,536 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2020-10-28 08:45:28,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 08:45:28,537 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2020-10-28 08:45:28,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:45:28,538 INFO L225 Difference]: With dead ends: 142 [2020-10-28 08:45:28,538 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 08:45:28,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2020-10-28 08:45:28,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 08:45:28,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-28 08:45:28,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-28 08:45:28,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2020-10-28 08:45:28,552 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 85 [2020-10-28 08:45:28,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:45:28,554 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2020-10-28 08:45:28,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:45:28,554 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2020-10-28 08:45:28,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 08:45:28,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:45:28,555 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 08:45:28,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 08:45:28,555 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:45:28,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:45:28,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1690831592, now seen corresponding path program 12 times [2020-10-28 08:45:28,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:45:28,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784424448] [2020-10-28 08:45:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:45:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:28,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:29,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:32,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:33,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:33,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 08:45:33,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:45:33,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-28 08:45:33,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:33,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 71 [2020-10-28 08:45:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:45:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 08:45:33,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:35,943 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-28 08:45:36,132 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2020-10-28 08:45:36,369 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 34 [2020-10-28 08:45:36,586 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 25 [2020-10-28 08:45:37,151 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2020-10-28 08:45:37,371 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-28 08:45:37,969 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2020-10-28 08:45:41,820 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-10-28 08:45:44,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:45:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:45:44,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:45:44,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:45:44,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:45:44,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:45:44,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:45:44,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:45:44,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:45:44,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:45:44,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:45:44,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:45:44,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:45:44,543 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 14 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:45:44,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784424448] [2020-10-28 08:45:44,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:45:44,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2020-10-28 08:45:44,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633038068] [2020-10-28 08:45:44,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-10-28 08:45:44,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:45:44,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-10-28 08:45:44,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=4395, Unknown=0, NotChecked=0, Total=4692 [2020-10-28 08:45:44,547 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand 69 states. [2020-10-28 08:45:45,299 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 36 [2020-10-28 08:45:47,820 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 71 [2020-10-28 08:45:48,325 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 53 [2020-10-28 08:45:48,808 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 45 [2020-10-28 08:45:49,121 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 35 [2020-10-28 08:45:49,652 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 61 [2020-10-28 08:45:49,981 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 39 [2020-10-28 08:45:50,331 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2020-10-28 08:45:50,949 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 37 [2020-10-28 08:45:51,652 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 28 [2020-10-28 08:45:52,022 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 27 [2020-10-28 08:45:52,447 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 32 [2020-10-28 08:45:52,831 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 22 [2020-10-28 08:45:53,213 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 28 [2020-10-28 08:45:53,719 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 65 [2020-10-28 08:45:54,213 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 50 [2020-10-28 08:45:55,019 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 20 [2020-10-28 08:45:55,478 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 18 [2020-10-28 08:45:55,894 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 23 [2020-10-28 08:45:56,938 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 27 [2020-10-28 08:45:57,302 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 30 [2020-10-28 08:45:57,668 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 31 [2020-10-28 08:46:02,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:46:02,595 INFO L93 Difference]: Finished difference Result 200 states and 218 transitions. [2020-10-28 08:46:02,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-28 08:46:02,597 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 95 [2020-10-28 08:46:02,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:46:02,598 INFO L225 Difference]: With dead ends: 200 [2020-10-28 08:46:02,598 INFO L226 Difference]: Without dead ends: 99 [2020-10-28 08:46:02,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2060 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=921, Invalid=10209, Unknown=0, NotChecked=0, Total=11130 [2020-10-28 08:46:02,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-28 08:46:02,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2020-10-28 08:46:02,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-28 08:46:02,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2020-10-28 08:46:02,613 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 95 [2020-10-28 08:46:02,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:46:02,613 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2020-10-28 08:46:02,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-10-28 08:46:02,613 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2020-10-28 08:46:02,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 08:46:02,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:46:02,614 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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] [2020-10-28 08:46:02,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 08:46:02,614 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:46:02,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:46:02,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1549195930, now seen corresponding path program 13 times [2020-10-28 08:46:02,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:46:02,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584672497] [2020-10-28 08:46:02,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:46:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:46:02,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:02,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:02,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:02,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:04,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:07,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:46:07,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 08:46:07,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:46:07,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:46:07,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:46:07,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:46:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:46:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:46:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 08:46:07,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:46:07,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:46:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:46:07,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:07,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:46:07,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:46:07,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:46:07,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:46:07,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:46:07,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:46:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:46:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:46:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:46:07,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:46:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-28 08:46:07,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584672497] [2020-10-28 08:46:07,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:46:07,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:46:07,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120318959] [2020-10-28 08:46:07,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:46:07,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:46:07,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:46:07,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:46:07,970 INFO L87 Difference]: Start difference. First operand 98 states and 104 transitions. Second operand 16 states. [2020-10-28 08:46:08,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:46:08,925 INFO L93 Difference]: Finished difference Result 176 states and 192 transitions. [2020-10-28 08:46:08,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:46:08,928 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 97 [2020-10-28 08:46:08,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:46:08,929 INFO L225 Difference]: With dead ends: 176 [2020-10-28 08:46:08,929 INFO L226 Difference]: Without dead ends: 110 [2020-10-28 08:46:08,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2020-10-28 08:46:08,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-28 08:46:08,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-28 08:46:08,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-28 08:46:08,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 116 transitions. [2020-10-28 08:46:08,944 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 116 transitions. Word has length 97 [2020-10-28 08:46:08,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:46:08,945 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 116 transitions. [2020-10-28 08:46:08,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:46:08,945 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 116 transitions. [2020-10-28 08:46:08,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 08:46:08,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:46:08,946 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:46:08,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 08:46:08,947 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:46:08,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:46:08,947 INFO L82 PathProgramCache]: Analyzing trace with hash 799454822, now seen corresponding path program 14 times [2020-10-28 08:46:08,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:46:08,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80416671] [2020-10-28 08:46:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:46:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:46:09,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:10,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:14,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:46:14,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 08:46:14,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:46:14,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 08:46:14,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:46:14,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:46:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 80 [2020-10-28 08:46:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 08:46:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 08:46:14,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:46:16,639 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-10-28 08:46:16,845 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-28 08:46:17,268 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-10-28 08:46:17,572 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-10-28 08:46:17,897 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2020-10-28 08:46:18,197 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2020-10-28 08:46:18,580 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36 [2020-10-28 08:46:18,888 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-10-28 08:46:19,197 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2020-10-28 08:46:19,528 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2020-10-28 08:46:19,845 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2020-10-28 08:46:20,169 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2020-10-28 08:46:20,550 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2020-10-28 08:46:20,933 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2020-10-28 08:46:21,315 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-10-28 08:46:21,604 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2020-10-28 08:46:21,904 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2020-10-28 08:46:22,220 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-10-28 08:46:22,546 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2020-10-28 08:46:22,873 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-10-28 08:46:23,195 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2020-10-28 08:46:23,512 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2020-10-28 08:46:23,813 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2020-10-28 08:46:24,127 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-10-28 08:46:24,454 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2020-10-28 08:46:24,766 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2020-10-28 08:46:25,080 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 35 [2020-10-28 08:46:25,335 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 28 [2020-10-28 08:46:25,708 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2020-10-28 08:46:26,226 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2020-10-28 08:46:26,598 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2020-10-28 08:46:26,973 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-10-28 08:46:27,343 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2020-10-28 08:46:27,709 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-10-28 08:46:28,080 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-28 08:46:28,455 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2020-10-28 08:46:28,881 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-10-28 08:46:29,292 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2020-10-28 08:46:29,695 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-10-28 08:46:30,197 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-28 08:46:30,529 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2020-10-28 08:46:34,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:46:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:46:34,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:46:34,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:46:34,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:46:34,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:46:34,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:46:34,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:46:34,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:46:34,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:46:34,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:46:34,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:46:34,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:46:34,250 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 36 proven. 180 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 08:46:34,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80416671] [2020-10-28 08:46:34,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:46:34,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2020-10-28 08:46:34,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824498448] [2020-10-28 08:46:34,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-10-28 08:46:34,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:46:34,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-10-28 08:46:34,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=5881, Unknown=0, NotChecked=0, Total=6320 [2020-10-28 08:46:34,255 INFO L87 Difference]: Start difference. First operand 110 states and 116 transitions. Second operand 80 states. [2020-10-28 08:46:34,691 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 3 [2020-10-28 08:46:35,348 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 36 [2020-10-28 08:46:39,329 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 128 DAG size of output: 96 [2020-10-28 08:46:40,342 WARN L193 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 100 [2020-10-28 08:46:41,062 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 80 [2020-10-28 08:46:42,209 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 102 [2020-10-28 08:46:42,651 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 54 [2020-10-28 08:46:43,853 WARN L193 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 130 [2020-10-28 08:46:45,059 WARN L193 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 121 [2020-10-28 08:46:45,343 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2020-10-28 08:46:46,575 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 132 [2020-10-28 08:46:47,796 WARN L193 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 129 [2020-10-28 08:46:48,837 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 125 [2020-10-28 08:46:50,324 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 134 DAG size of output: 133 [2020-10-28 08:46:51,287 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 122 [2020-10-28 08:46:51,763 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-28 08:46:52,453 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 91 [2020-10-28 08:46:52,938 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2020-10-28 08:46:53,671 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 86 [2020-10-28 08:46:53,976 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-28 08:46:54,604 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 78 [2020-10-28 08:46:54,873 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 08:46:55,523 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2020-10-28 08:46:55,798 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 08:46:56,351 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 66 [2020-10-28 08:46:57,405 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2020-10-28 08:46:58,337 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 40 [2020-10-28 08:46:59,004 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 43 [2020-10-28 08:46:59,829 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 42 [2020-10-28 08:47:00,985 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 17 [2020-10-28 08:47:01,347 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 23 [2020-10-28 08:47:01,817 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 20 [2020-10-28 08:47:02,403 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 25 [2020-10-28 08:47:02,901 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 24 [2020-10-28 08:47:03,355 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 29 [2020-10-28 08:47:03,829 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 27 [2020-10-28 08:47:04,312 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 31 [2020-10-28 08:47:05,912 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 158 DAG size of output: 116