/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_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 12:11:36,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 12:11:36,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 12:11:36,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 12:11:36,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 12:11:36,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 12:11:36,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 12:11:36,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 12:11:36,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 12:11:36,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 12:11:36,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 12:11:36,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 12:11:36,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 12:11:36,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 12:11:36,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 12:11:36,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 12:11:36,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 12:11:36,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 12:11:36,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 12:11:36,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 12:11:36,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 12:11:36,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 12:11:36,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 12:11:36,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 12:11:36,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 12:11:36,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 12:11:36,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 12:11:36,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 12:11:36,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 12:11:36,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 12:11:36,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 12:11:36,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 12:11:36,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 12:11:36,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 12:11:36,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 12:11:36,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 12:11:36,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 12:11:36,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 12:11:36,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 12:11:36,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 12:11:36,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 12:11:36,138 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 12:11:36,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 12:11:36,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 12:11:36,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 12:11:36,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 12:11:36,162 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 12:11:36,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 12:11:36,162 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 12:11:36,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 12:11:36,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 12:11:36,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 12:11:36,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 12:11:36,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 12:11:36,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 12:11:36,164 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 12:11:36,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 12:11:36,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 12:11:36,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 12:11:36,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 12:11:36,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 12:11:36,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 12:11:36,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 12:11:36,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 12:11:36,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 12:11:36,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 12:11:36,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 12:11:36,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 12:11:36,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 12:11:36,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 12:11:36,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 12:11:36,167 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 12:11:36,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 12:11:36,510 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 12:11:36,514 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 12:11:36,516 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 12:11:36,516 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 12:11:36,517 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label34.c [2020-10-12 12:11:36,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/621305f6e/f2ecaf731710459daf6a4b7be202b6e4/FLAG4df4c7733 [2020-10-12 12:11:37,518 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 12:11:37,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label34.c [2020-10-12 12:11:37,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/621305f6e/f2ecaf731710459daf6a4b7be202b6e4/FLAG4df4c7733 [2020-10-12 12:11:37,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/621305f6e/f2ecaf731710459daf6a4b7be202b6e4 [2020-10-12 12:11:37,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 12:11:37,910 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 12:11:37,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 12:11:37,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 12:11:37,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 12:11:37,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:11:37" (1/1) ... [2020-10-12 12:11:37,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed69f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:37, skipping insertion in model container [2020-10-12 12:11:37,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:11:37" (1/1) ... [2020-10-12 12:11:37,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 12:11:38,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 12:11:40,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:11:40,616 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 12:11:41,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:11:41,861 INFO L208 MainTranslator]: Completed translation [2020-10-12 12:11:41,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:41 WrapperNode [2020-10-12 12:11:41,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 12:11:41,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 12:11:41,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 12:11:41,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 12:11:41,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:41" (1/1) ... [2020-10-12 12:11:41,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:41" (1/1) ... [2020-10-12 12:11:41,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:41" (1/1) ... [2020-10-12 12:11:41,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:41" (1/1) ... [2020-10-12 12:11:42,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:41" (1/1) ... [2020-10-12 12:11:42,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:41" (1/1) ... [2020-10-12 12:11:42,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:41" (1/1) ... [2020-10-12 12:11:42,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 12:11:42,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 12:11:42,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 12:11:42,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 12:11:42,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:41" (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 12:11:42,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 12:11:42,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 12:11:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 12:11:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 12:11:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 12:11:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 12:11:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 12:11:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 12:11:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 12:11:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 12:11:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 12:11:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 12:11:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 12:11:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 12:11:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 12:11:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 12:11:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 12:11:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 12:11:42,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 12:11:49,342 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 12:11:49,342 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 12:11:49,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:11:49 BoogieIcfgContainer [2020-10-12 12:11:49,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 12:11:49,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 12:11:49,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 12:11:49,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 12:11:49,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:11:37" (1/3) ... [2020-10-12 12:11:49,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c41767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:11:49, skipping insertion in model container [2020-10-12 12:11:49,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:41" (2/3) ... [2020-10-12 12:11:49,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c41767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:11:49, skipping insertion in model container [2020-10-12 12:11:49,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:11:49" (3/3) ... [2020-10-12 12:11:49,365 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label34.c [2020-10-12 12:11:49,376 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 12:11:49,385 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 12:11:49,400 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 12:11:49,430 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 12:11:49,430 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 12:11:49,431 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 12:11:49,431 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 12:11:49,431 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 12:11:49,431 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 12:11:49,431 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 12:11:49,431 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 12:11:49,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-12 12:11:49,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2020-10-12 12:11:49,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:11:49,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:11:49,543 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:11:49,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:11:49,550 INFO L82 PathProgramCache]: Analyzing trace with hash -2146104656, now seen corresponding path program 1 times [2020-10-12 12:11:49,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:11:49,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559016465] [2020-10-12 12:11:49,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:11:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:11:51,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:11:53,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:11:55,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:11:55,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1009 [2020-10-12 12:11:55,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:11:55,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5346 [2020-10-12 12:11:55,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:11:55,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 12:11:55,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:11:55,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-12 12:11:55,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 12:11:58,950 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 55 [2020-10-12 12:11:59,193 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-12 12:11:59,377 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-12 12:11:59,549 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-12 12:11:59,728 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2020-10-12 12:11:59,918 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-12 12:12:00,091 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-12 12:12:00,284 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-12 12:12:00,539 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-12 12:12:00,685 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-12 12:12:01,183 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:12:01,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:12:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:12:01,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:12:01,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:12:01,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:12:01,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:12:01,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 12:12:01,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:12:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:12:01,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:12:01,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:12:01,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:12:13,086 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 12:12:13,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559016465] [2020-10-12 12:12:13,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 12:12:13,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-12 12:12:13,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040294038] [2020-10-12 12:12:13,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 12:12:13,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:12:13,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 12:12:13,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-12 12:12:13,116 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 20 states. [2020-10-12 12:12:13,485 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 12:12:14,082 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 166 [2020-10-12 12:12:14,685 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 166 [2020-10-12 12:12:15,379 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 174 [2020-10-12 12:12:19,110 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 173 [2020-10-12 12:12:22,351 WARN L193 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 172 [2020-10-12 12:12:24,596 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 163 [2020-10-12 12:12:25,225 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 169 [2020-10-12 12:12:26,110 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 168 [2020-10-12 12:12:34,837 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 161 [2020-10-12 12:12:35,432 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 168 [2020-10-12 12:12:38,065 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 165 [2020-10-12 12:12:45,215 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 159 [2020-10-12 12:12:45,864 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 163 [2020-10-12 12:12:48,229 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 161 [2020-10-12 12:13:00,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:13:00,060 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-12 12:13:00,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 12:13:00,063 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 993 [2020-10-12 12:13:00,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:13:00,102 INFO L225 Difference]: With dead ends: 3396 [2020-10-12 12:13:00,102 INFO L226 Difference]: Without dead ends: 2019 [2020-10-12 12:13:00,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=191, Invalid=999, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 12:13:00,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-12 12:13:00,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-12 12:13:00,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-12 12:13:00,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-12 12:13:00,267 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 993 [2020-10-12 12:13:00,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:13:00,270 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-12 12:13:00,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 12:13:00,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-12 12:13:00,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2020-10-12 12:13:00,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:13:00,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:13:00,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 12:13:00,324 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:13:00,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:13:00,325 INFO L82 PathProgramCache]: Analyzing trace with hash 652227901, now seen corresponding path program 1 times [2020-10-12 12:13:00,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:13:00,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774837761] [2020-10-12 12:13:00,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:13:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:01,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:01,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:05,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:06,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1081 [2020-10-12 12:13:06,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:13:06,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5147 [2020-10-12 12:13:06,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:06,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:13:06,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 12:13:06,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1000 [2020-10-12 12:13:06,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:07,719 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:13:07,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:13:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:07,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:07,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:07,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:13:07,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:07,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 12:13:07,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:07,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:13:07,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:13:07,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:13:07,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:13:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:07,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:08,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:08,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:13:08,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:08,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 12:13:08,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:08,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:13:08,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:08,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 12:13:08,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:09,870 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 12:13:09,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774837761] [2020-10-12 12:13:09,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:13:09,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 12:13:09,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405963576] [2020-10-12 12:13:09,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 12:13:09,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:13:09,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 12:13:09,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:13:09,875 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 6 states. [2020-10-12 12:13:10,019 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:13:10,629 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 12:13:31,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:13:31,242 INFO L93 Difference]: Finished difference Result 5497 states and 9483 transitions. [2020-10-12 12:13:31,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 12:13:31,250 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1063 [2020-10-12 12:13:31,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:13:31,275 INFO L225 Difference]: With dead ends: 5497 [2020-10-12 12:13:31,276 INFO L226 Difference]: Without dead ends: 4238 [2020-10-12 12:13:31,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:13:31,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4238 states. [2020-10-12 12:13:31,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4238 to 4204. [2020-10-12 12:13:31,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4204 states. [2020-10-12 12:13:31,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4204 states to 4204 states and 6463 transitions. [2020-10-12 12:13:31,399 INFO L78 Accepts]: Start accepts. Automaton has 4204 states and 6463 transitions. Word has length 1063 [2020-10-12 12:13:31,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:13:31,401 INFO L479 AbstractCegarLoop]: Abstraction has 4204 states and 6463 transitions. [2020-10-12 12:13:31,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 12:13:31,401 INFO L276 IsEmpty]: Start isEmpty. Operand 4204 states and 6463 transitions. [2020-10-12 12:13:31,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1077 [2020-10-12 12:13:31,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:13:31,430 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:13:31,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 12:13:31,430 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:13:31,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:13:31,431 INFO L82 PathProgramCache]: Analyzing trace with hash 671091698, now seen corresponding path program 1 times [2020-10-12 12:13:31,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:13:31,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956662990] [2020-10-12 12:13:31,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:13:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:32,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:32,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:33,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:36,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:36,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1096 [2020-10-12 12:13:36,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:13:36,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5116 [2020-10-12 12:13:36,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:36,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:13:36,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-12 12:13:36,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1000 [2020-10-12 12:13:36,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:38,046 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:13:38,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:13:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:38,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:38,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:38,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:13:38,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:38,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 12:13:38,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:38,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:13:38,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:38,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:13:38,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:38,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:13:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:38,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:38,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:38,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:13:38,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:38,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 12:13:38,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:38,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:13:38,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:38,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:13:38,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:38,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:13:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:38,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:38,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:38,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 12:13:38,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:38,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 12:13:38,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:38,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:13:38,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:38,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 12:13:38,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 12:13:40,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956662990] [2020-10-12 12:13:40,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:13:40,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 12:13:40,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807566731] [2020-10-12 12:13:40,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 12:13:40,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:13:40,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 12:13:40,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:13:40,726 INFO L87 Difference]: Start difference. First operand 4204 states and 6463 transitions. Second operand 6 states. [2020-10-12 12:13:40,870 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:13:57,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:13:57,542 INFO L93 Difference]: Finished difference Result 10816 states and 17607 transitions. [2020-10-12 12:13:57,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 12:13:57,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1076 [2020-10-12 12:13:57,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:13:57,584 INFO L225 Difference]: With dead ends: 10816 [2020-10-12 12:13:57,585 INFO L226 Difference]: Without dead ends: 7372 [2020-10-12 12:13:57,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 12:13:57,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7372 states. [2020-10-12 12:13:57,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7372 to 7307. [2020-10-12 12:13:57,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7307 states. [2020-10-12 12:13:57,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7307 states to 7307 states and 11674 transitions. [2020-10-12 12:13:57,801 INFO L78 Accepts]: Start accepts. Automaton has 7307 states and 11674 transitions. Word has length 1076 [2020-10-12 12:13:57,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:13:57,803 INFO L479 AbstractCegarLoop]: Abstraction has 7307 states and 11674 transitions. [2020-10-12 12:13:57,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 12:13:57,803 INFO L276 IsEmpty]: Start isEmpty. Operand 7307 states and 11674 transitions. [2020-10-12 12:13:57,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1109 [2020-10-12 12:13:57,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:13:57,958 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:13:57,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 12:13:57,959 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:13:57,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:13:57,960 INFO L82 PathProgramCache]: Analyzing trace with hash 477447486, now seen corresponding path program 1 times [2020-10-12 12:13:57,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:13:57,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957785468] [2020-10-12 12:13:57,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:13:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:58,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:58,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:58,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:03,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:03,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:03,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1130 [2020-10-12 12:14:03,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 12:14:03,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5193 [2020-10-12 12:14:03,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:03,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:14:03,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:14:03,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 12:14:03,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:14:03,827 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:14:03,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:14:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:03,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:03,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:03,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:14:03,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:03,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 12:14:03,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:03,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:14:03,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:14:03,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:14:03,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:03,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:14:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:03,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:04,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:04,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:14:04,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:04,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-12 12:14:04,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:04,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:14:04,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:14:04,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:14:04,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:04,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:14:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:04,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:04,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:04,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 12:14:04,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:04,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 12:14:04,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:04,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:14:04,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:14:04,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 12:14:04,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:14:04,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 12:14:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:04,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:04,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:04,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 12:14:04,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:04,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 12:14:04,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:04,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:14:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-12 12:14:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:14:04,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:14:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 111 proven. 37 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-12 12:14:05,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957785468] [2020-10-12 12:14:05,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:14:05,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 12:14:05,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348173924] [2020-10-12 12:14:05,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 12:14:05,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:14:05,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 12:14:05,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 12:14:05,319 INFO L87 Difference]: Start difference. First operand 7307 states and 11674 transitions. Second operand 7 states. [2020-10-12 12:14:05,471 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 12:14:06,805 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 12:14:23,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:14:23,382 INFO L93 Difference]: Finished difference Result 20507 states and 34431 transitions. [2020-10-12 12:14:23,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 12:14:23,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1108 [2020-10-12 12:14:23,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:14:23,451 INFO L225 Difference]: With dead ends: 20507 [2020-10-12 12:14:23,451 INFO L226 Difference]: Without dead ends: 13960 [2020-10-12 12:14:23,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 12:14:23,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13960 states. [2020-10-12 12:14:23,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13960 to 13753. [2020-10-12 12:14:23,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13753 states. [2020-10-12 12:14:23,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13753 states to 13753 states and 21092 transitions. [2020-10-12 12:14:23,884 INFO L78 Accepts]: Start accepts. Automaton has 13753 states and 21092 transitions. Word has length 1108 [2020-10-12 12:14:23,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:14:23,885 INFO L479 AbstractCegarLoop]: Abstraction has 13753 states and 21092 transitions. [2020-10-12 12:14:23,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 12:14:23,885 INFO L276 IsEmpty]: Start isEmpty. Operand 13753 states and 21092 transitions. [2020-10-12 12:14:23,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1121 [2020-10-12 12:14:23,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:14:23,954 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:23,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 12:14:23,954 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:14:23,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:14:23,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1072076065, now seen corresponding path program 1 times [2020-10-12 12:14:23,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:14:23,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094809351] [2020-10-12 12:14:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:14:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:24,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:24,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:24,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:25,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:26,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:29,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:29,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1144 [2020-10-12 12:14:29,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 12:14:29,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-10-12 12:14:29,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:29,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 12:14:29,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:14:29,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 12:14:29,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:29,627 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:14:29,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:14:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:29,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:29,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:29,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:14:29,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:29,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 12:14:29,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:29,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:14:29,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:14:29,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:14:29,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:29,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:14:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:29,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:29,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:29,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:14:29,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:29,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-12 12:14:29,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:29,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:14:29,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:14:29,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:14:29,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:30,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:14:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:30,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:30,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:30,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 12:14:30,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:30,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 12:14:30,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:30,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:14:30,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 12:14:30,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:14:30,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:30,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 12:14:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:30,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:30,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:30,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 12:14:30,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:30,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 12:14:30,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:14:30,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 12:14:30,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:14:30,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:30,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 12:14:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:30,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:30,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:30,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 12:14:30,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:30,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 12:14:30,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:30,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:14:30,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-12 12:14:30,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:14:30,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:30,992 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 115 proven. 42 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-12 12:14:30,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094809351] [2020-10-12 12:14:30,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:14:30,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 12:14:30,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052132745] [2020-10-12 12:14:30,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 12:14:30,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:14:30,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 12:14:30,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 12:14:30,996 INFO L87 Difference]: Start difference. First operand 13753 states and 21092 transitions. Second operand 7 states. [2020-10-12 12:14:31,155 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 12:14:32,632 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 12:14:50,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:14:50,227 INFO L93 Difference]: Finished difference Result 31650 states and 49084 transitions. [2020-10-12 12:14:50,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 12:14:50,228 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1120 [2020-10-12 12:14:50,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:14:50,306 INFO L225 Difference]: With dead ends: 31650 [2020-10-12 12:14:50,307 INFO L226 Difference]: Without dead ends: 18657 [2020-10-12 12:14:50,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 12:14:50,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18657 states. [2020-10-12 12:14:50,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18657 to 18446. [2020-10-12 12:14:50,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18446 states. [2020-10-12 12:14:50,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18446 states to 18446 states and 28033 transitions. [2020-10-12 12:14:50,872 INFO L78 Accepts]: Start accepts. Automaton has 18446 states and 28033 transitions. Word has length 1120 [2020-10-12 12:14:50,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:14:50,873 INFO L479 AbstractCegarLoop]: Abstraction has 18446 states and 28033 transitions. [2020-10-12 12:14:50,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 12:14:50,873 INFO L276 IsEmpty]: Start isEmpty. Operand 18446 states and 28033 transitions. [2020-10-12 12:14:50,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1173 [2020-10-12 12:14:50,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:14:50,947 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-10-12 12:14:50,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 12:14:50,948 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:14:50,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:14:50,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1110555740, now seen corresponding path program 1 times [2020-10-12 12:14:50,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:14:50,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034172272] [2020-10-12 12:14:50,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:14:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:51,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:51,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:52,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:56,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:56,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1196 [2020-10-12 12:14:56,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:14:56,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-10-12 12:14:56,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:56,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:14:56,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-12 12:14:56,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 12:14:56,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:14:57,090 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:14:57,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:14:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:57,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:57,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:57,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:14:57,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:57,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 12:14:57,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:57,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:14:57,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:14:57,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:14:57,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:14:57,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:14:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:57,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:57,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:57,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 12:14:57,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:57,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 12:14:57,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:57,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:14:57,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:14:57,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:14:57,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:57,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-12 12:14:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:57,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:57,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:57,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 12:14:57,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:57,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 12:14:57,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:57,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:14:57,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:14:57,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 12:14:57,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:57,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-12 12:14:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:57,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:57,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:57,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 12:14:57,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:57,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 12:14:57,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:57,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:14:57,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:14:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 12:14:57,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:57,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 12:14:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:57,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:14:57,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:14:57,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 12:14:57,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:14:57,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 12:14:57,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:14:57,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:14:57,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-12 12:14:57,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:14:57,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:14:58,223 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 199 proven. 12 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-12 12:14:58,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034172272] [2020-10-12 12:14:58,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:14:58,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 12:14:58,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544512970] [2020-10-12 12:14:58,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 12:14:58,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:14:58,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 12:14:58,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 12:14:58,232 INFO L87 Difference]: Start difference. First operand 18446 states and 28033 transitions. Second operand 7 states. [2020-10-12 12:14:59,042 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 12:14:59,971 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 12:15:16,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:15:16,275 INFO L93 Difference]: Finished difference Result 41335 states and 63944 transitions. [2020-10-12 12:15:16,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 12:15:16,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1172 [2020-10-12 12:15:16,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:15:16,353 INFO L225 Difference]: With dead ends: 41335 [2020-10-12 12:15:16,353 INFO L226 Difference]: Without dead ends: 23649 [2020-10-12 12:15:16,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 12:15:16,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23649 states. [2020-10-12 12:15:16,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23649 to 23205. [2020-10-12 12:15:16,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23205 states. [2020-10-12 12:15:17,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23205 states to 23205 states and 34812 transitions. [2020-10-12 12:15:17,037 INFO L78 Accepts]: Start accepts. Automaton has 23205 states and 34812 transitions. Word has length 1172 [2020-10-12 12:15:17,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:15:17,038 INFO L479 AbstractCegarLoop]: Abstraction has 23205 states and 34812 transitions. [2020-10-12 12:15:17,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 12:15:17,038 INFO L276 IsEmpty]: Start isEmpty. Operand 23205 states and 34812 transitions. [2020-10-12 12:15:17,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1176 [2020-10-12 12:15:17,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:15:17,107 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-10-12 12:15:17,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 12:15:17,108 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:15:17,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:15:17,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1702893154, now seen corresponding path program 1 times [2020-10-12 12:15:17,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:15:17,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148476187] [2020-10-12 12:15:17,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:15:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:15:17,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:17,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:17,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:18,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking...