/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 12:05:33,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 12:05:33,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 12:05:33,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 12:05:33,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 12:05:33,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 12:05:33,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 12:05:33,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 12:05:33,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 12:05:33,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 12:05:33,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 12:05:33,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 12:05:33,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 12:05:33,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 12:05:33,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 12:05:33,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 12:05:33,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 12:05:33,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 12:05:33,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 12:05:33,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 12:05:33,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 12:05:33,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 12:05:33,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 12:05:33,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 12:05:33,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 12:05:33,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 12:05:33,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 12:05:33,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 12:05:33,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 12:05:33,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 12:05:33,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 12:05:33,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 12:05:33,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 12:05:33,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 12:05:33,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 12:05:33,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 12:05:33,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 12:05:33,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 12:05:33,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 12:05:33,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 12:05:33,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 12:05:33,198 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 [2020-10-12 12:05:33,220 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 12:05:33,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 12:05:33,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 12:05:33,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 12:05:33,222 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 12:05:33,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 12:05:33,222 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 12:05:33,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 12:05:33,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 12:05:33,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 12:05:33,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 12:05:33,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 12:05:33,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 12:05:33,224 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 12:05:33,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 12:05:33,224 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 12:05:33,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 12:05:33,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 12:05:33,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 12:05:33,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 12:05:33,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 12:05:33,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 12:05:33,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 12:05:33,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 12:05:33,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 12:05:33,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 12:05:33,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 12:05:33,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 12:05:33,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 12:05:33,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 12:05:33,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 12:05:33,548 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 12:05:33,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 12:05:33,553 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 12:05:33,554 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 12:05:33,554 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label15.c [2020-10-12 12:05:33,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5374b5415/27f683b8eafe4430ad9ce2042a6cb4a3/FLAGfd9f52cfd [2020-10-12 12:05:34,529 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 12:05:34,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label15.c [2020-10-12 12:05:34,579 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5374b5415/27f683b8eafe4430ad9ce2042a6cb4a3/FLAGfd9f52cfd [2020-10-12 12:05:34,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5374b5415/27f683b8eafe4430ad9ce2042a6cb4a3 [2020-10-12 12:05:34,977 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 12:05:34,978 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 12:05:34,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 12:05:34,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 12:05:34,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 12:05:34,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:05:34" (1/1) ... [2020-10-12 12:05:34,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2b9410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:34, skipping insertion in model container [2020-10-12 12:05:34,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:05:34" (1/1) ... [2020-10-12 12:05:34,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 12:05:35,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 12:05:37,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:05:37,333 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 12:05:38,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:05:38,494 INFO L208 MainTranslator]: Completed translation [2020-10-12 12:05:38,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:38 WrapperNode [2020-10-12 12:05:38,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 12:05:38,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 12:05:38,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 12:05:38,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 12:05:38,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:38" (1/1) ... [2020-10-12 12:05:38,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:38" (1/1) ... [2020-10-12 12:05:38,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:38" (1/1) ... [2020-10-12 12:05:38,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:38" (1/1) ... [2020-10-12 12:05:38,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:38" (1/1) ... [2020-10-12 12:05:38,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:38" (1/1) ... [2020-10-12 12:05:38,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:38" (1/1) ... [2020-10-12 12:05:38,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 12:05:38,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 12:05:38,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 12:05:38,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 12:05:38,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:38" (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 [2020-10-12 12:05:39,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 12:05:39,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 12:05:39,034 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 12:05:39,035 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 12:05:39,035 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 12:05:39,035 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 12:05:39,036 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 12:05:39,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 12:05:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 12:05:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 12:05:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 12:05:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 12:05:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 12:05:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 12:05:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 12:05:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 12:05:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 12:05:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 12:05:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 12:05:46,645 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 12:05:46,645 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 12:05:46,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:05:46 BoogieIcfgContainer [2020-10-12 12:05:46,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 12:05:46,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 12:05:46,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 12:05:46,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 12:05:46,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:05:34" (1/3) ... [2020-10-12 12:05:46,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326e3ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:05:46, skipping insertion in model container [2020-10-12 12:05:46,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:38" (2/3) ... [2020-10-12 12:05:46,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326e3ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:05:46, skipping insertion in model container [2020-10-12 12:05:46,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:05:46" (3/3) ... [2020-10-12 12:05:46,677 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label15.c [2020-10-12 12:05:46,688 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 12:05:46,707 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 12:05:46,720 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 12:05:46,750 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 12:05:46,750 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 12:05:46,750 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 12:05:46,751 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 12:05:46,751 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 12:05:46,751 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 12:05:46,751 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 12:05:46,751 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 12:05:46,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-12 12:05:46,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2020-10-12 12:05:46,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:05:46,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:05:46,860 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:05:46,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:05:46,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1216389161, now seen corresponding path program 1 times [2020-10-12 12:05:46,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:05:46,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405291266] [2020-10-12 12:05:46,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:05:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:48,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:50,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:53,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:05:53,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 976 [2020-10-12 12:05:53,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:05:53,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5187 [2020-10-12 12:05:53,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:05:53,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 12:05:53,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:05:53,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-12 12:05:53,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 12:05:58,751 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 56 [2020-10-12 12:05:59,027 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2020-10-12 12:05:59,288 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2020-10-12 12:05:59,547 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2020-10-12 12:05:59,835 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2020-10-12 12:06:00,061 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-10-12 12:06:00,286 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-10-12 12:06:00,516 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-10-12 12:06:00,692 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2020-10-12 12:06:00,890 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 [2020-10-12 12:06:01,076 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 [2020-10-12 12:06:01,243 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 49 [2020-10-12 12:06:01,668 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:06:01,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:06:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:06:01,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:01,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:06:01,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:06:01,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:06:01,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 12:06:01,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:06:01,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:06:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:06:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:06:01,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:06:01,910 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-12 12:06:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:06:12,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405291266] [2020-10-12 12:06:12,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 12:06:12,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-12 12:06:12,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700172832] [2020-10-12 12:06:12,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 12:06:12,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:06:12,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 12:06:12,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-12 12:06:12,965 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 19 states. [2020-10-12 12:06:13,365 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 12:06:14,071 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 166 [2020-10-12 12:06:14,777 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 166 [2020-10-12 12:06:15,555 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 174 [2020-10-12 12:06:19,293 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 173 [2020-10-12 12:06:22,869 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 194 DAG size of output: 172 [2020-10-12 12:06:25,372 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 163 [2020-10-12 12:06:26,155 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 176 [2020-10-12 12:06:27,258 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 168 [2020-10-12 12:06:36,498 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 161 [2020-10-12 12:06:37,257 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 166 [2020-10-12 12:06:40,458 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 183 DAG size of output: 165 [2020-10-12 12:06:47,471 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 159 [2020-10-12 12:06:48,197 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 163 [2020-10-12 12:06:50,582 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 161 [2020-10-12 12:07:02,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:07:02,512 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-12 12:07:02,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 12:07:02,515 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 960 [2020-10-12 12:07:02,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:07:02,573 INFO L225 Difference]: With dead ends: 3396 [2020-10-12 12:07:02,574 INFO L226 Difference]: Without dead ends: 2019 [2020-10-12 12:07:02,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 12:07:02,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-12 12:07:02,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-12 12:07:02,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-12 12:07:02,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-12 12:07:02,760 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 960 [2020-10-12 12:07:02,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:07:02,762 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-12 12:07:02,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 12:07:02,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-12 12:07:02,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2020-10-12 12:07:02,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:07:02,805 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:07:02,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 12:07:02,806 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:07:02,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:07:02,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1407859626, now seen corresponding path program 1 times [2020-10-12 12:07:02,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:07:02,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973663013] [2020-10-12 12:07:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:07:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:03,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:04,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:08,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:08,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1048 [2020-10-12 12:07:08,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:07:08,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-12 12:07:08,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:08,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:07:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 12:07:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 967 [2020-10-12 12:07:08,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:07:09,182 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:07:09,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:07:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:09,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:09,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:09,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:07:09,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:07:09,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 12:07:09,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:09,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:07:09,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:07:09,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:07:09,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:07:09,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:07:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:09,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:09,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:09,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:07:09,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:07:09,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-12 12:07:09,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:09,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:07:09,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:07:09,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 12:07:09,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:07:10,864 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:07:10,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973663013] [2020-10-12 12:07:10,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:07:10,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 12:07:10,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557057214] [2020-10-12 12:07:10,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 12:07:10,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:07:10,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 12:07:10,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:07:10,871 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 6 states. [2020-10-12 12:07:11,365 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:07:11,689 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 12:07:34,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:07:34,134 INFO L93 Difference]: Finished difference Result 5491 states and 9498 transitions. [2020-10-12 12:07:34,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 12:07:34,136 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1030 [2020-10-12 12:07:34,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:07:34,161 INFO L225 Difference]: With dead ends: 5491 [2020-10-12 12:07:34,162 INFO L226 Difference]: Without dead ends: 4232 [2020-10-12 12:07:34,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:07:34,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4232 states. [2020-10-12 12:07:34,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4232 to 4149. [2020-10-12 12:07:34,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4149 states. [2020-10-12 12:07:34,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4149 states to 4149 states and 6502 transitions. [2020-10-12 12:07:34,302 INFO L78 Accepts]: Start accepts. Automaton has 4149 states and 6502 transitions. Word has length 1030 [2020-10-12 12:07:34,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:07:34,304 INFO L479 AbstractCegarLoop]: Abstraction has 4149 states and 6502 transitions. [2020-10-12 12:07:34,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 12:07:34,304 INFO L276 IsEmpty]: Start isEmpty. Operand 4149 states and 6502 transitions. [2020-10-12 12:07:34,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2020-10-12 12:07:34,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:07:34,329 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:07:34,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 12:07:34,329 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:07:34,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:07:34,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1071097429, now seen corresponding path program 1 times [2020-10-12 12:07:34,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:07:34,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042871897] [2020-10-12 12:07:34,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:07:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:35,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:35,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:39,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:39,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1063 [2020-10-12 12:07:39,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:07:39,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-12 12:07:39,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:39,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 12:07:39,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:07:39,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 12:07:39,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:07:40,410 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:07:40,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:07:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:40,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:40,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:40,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:07:40,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:07:40,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 12:07:40,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:40,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:07:40,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:07:40,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:07:40,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:07:40,608 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 12:07:40,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:07:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:40,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:40,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:40,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:07:40,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:07:40,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-12 12:07:40,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:40,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:07:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:07:40,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:07:40,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-12 12:07:41,207 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-10-12 12:07:41,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:07:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:41,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:41,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:41,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 12:07:41,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:07:41,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 12:07:41,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:07:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 12:07:41,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:07:41,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:07:42,778 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 77 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 12:07:42,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042871897] [2020-10-12 12:07:42,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:07:42,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 12:07:42,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078634234] [2020-10-12 12:07:42,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 12:07:42,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:07:42,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 12:07:42,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:07:42,782 INFO L87 Difference]: Start difference. First operand 4149 states and 6502 transitions. Second operand 8 states. [2020-10-12 12:07:42,987 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 12:07:44,239 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 12:07:44,848 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-12 12:08:17,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:08:17,406 INFO L93 Difference]: Finished difference Result 14237 states and 23995 transitions. [2020-10-12 12:08:17,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 12:08:17,408 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1043 [2020-10-12 12:08:17,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:08:17,462 INFO L225 Difference]: With dead ends: 14237 [2020-10-12 12:08:17,463 INFO L226 Difference]: Without dead ends: 10848 [2020-10-12 12:08:17,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-12 12:08:17,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10848 states. [2020-10-12 12:08:17,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10848 to 10712. [2020-10-12 12:08:17,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10712 states. [2020-10-12 12:08:17,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10712 states to 10712 states and 16282 transitions. [2020-10-12 12:08:17,816 INFO L78 Accepts]: Start accepts. Automaton has 10712 states and 16282 transitions. Word has length 1043 [2020-10-12 12:08:17,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:08:17,817 INFO L479 AbstractCegarLoop]: Abstraction has 10712 states and 16282 transitions. [2020-10-12 12:08:17,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 12:08:17,817 INFO L276 IsEmpty]: Start isEmpty. Operand 10712 states and 16282 transitions. [2020-10-12 12:08:17,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1083 [2020-10-12 12:08:17,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:08:17,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:08:17,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 12:08:17,865 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:08:17,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:08:17,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1486544915, now seen corresponding path program 1 times [2020-10-12 12:08:17,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:08:17,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686907942] [2020-10-12 12:08:17,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:08:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:08:18,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:08:19,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:08:22,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:08:23,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:08:23,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1100 [2020-10-12 12:08:23,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:08:23,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-12 12:08:23,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:08:23,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 12:08:23,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:08:23,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-12 12:08:23,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:08:24,989 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 80 [2020-10-12 12:08:25,260 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 76 [2020-10-12 12:08:25,468 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-12 12:08:25,636 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2020-10-12 12:08:26,319 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:08:26,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:08:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:08:26,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:08:26,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:08:26,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:08:26,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:08:26,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 12:08:26,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:08:26,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:08:26,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:08:26,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:08:26,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:08:26,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:08:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:08:26,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:08:26,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:08:26,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 12:08:26,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:08:26,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-12 12:08:26,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:08:26,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 12:08:26,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:08:26,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 12:08:26,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:08:27,323 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-12 12:08:35,336 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:08:35,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686907942] [2020-10-12 12:08:35,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:08:35,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 12:08:35,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948006120] [2020-10-12 12:08:35,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 12:08:35,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:08:35,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 12:08:35,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-12 12:08:35,339 INFO L87 Difference]: Start difference. First operand 10712 states and 16282 transitions. Second operand 18 states. [2020-10-12 12:08:35,602 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 12:08:37,836 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 78 [2020-10-12 12:08:38,169 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-10-12 12:08:38,704 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 94 [2020-10-12 12:08:39,476 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 171 [2020-10-12 12:08:40,325 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 179 [2020-10-12 12:08:41,715 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 178 [2020-10-12 12:08:45,184 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 200 DAG size of output: 177 [2020-10-12 12:08:54,766 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 165 [2020-10-12 12:08:55,572 WARN L193 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 171 [2020-10-12 12:08:57,053 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 170 [2020-10-12 12:09:07,001 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 188 DAG size of output: 169 [2020-10-12 12:09:08,243 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 167