/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:27:33,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:27:33,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:27:33,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:27:33,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:27:33,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:27:33,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:27:33,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:27:33,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:27:33,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:27:33,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:27:33,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:27:33,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:27:33,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:27:33,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:27:33,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:27:33,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:27:33,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:27:33,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:27:33,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:27:33,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:27:33,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:27:33,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:27:33,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:27:33,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:27:33,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:27:33,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:27:33,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:27:33,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:27:33,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:27:33,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:27:33,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:27:33,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:27:33,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:27:33,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:27:33,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:27:33,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:27:33,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:27:33,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:27:33,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:27:33,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:27:33,174 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 22:27:33,213 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:27:33,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:27:33,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:27:33,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:27:33,216 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:27:33,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:27:33,217 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:27:33,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:27:33,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:27:33,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:27:33,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:27:33,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:27:33,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:27:33,219 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:27:33,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:27:33,220 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:27:33,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:27:33,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:27:33,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:27:33,221 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:27:33,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:27:33,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:27:33,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:27:33,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:27:33,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:27:33,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:27:33,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:27:33,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:27:33,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:27:33,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:27:33,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:27:33,594 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:27:33,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:27:33,603 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:27:33,604 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:27:33,604 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label19.c [2020-10-14 22:27:33,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b1b8db45/db94899e04704601bff146f48e4ecdf0/FLAG738d4cc62 [2020-10-14 22:27:34,479 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:27:34,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label19.c [2020-10-14 22:27:34,517 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b1b8db45/db94899e04704601bff146f48e4ecdf0/FLAG738d4cc62 [2020-10-14 22:27:34,568 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b1b8db45/db94899e04704601bff146f48e4ecdf0 [2020-10-14 22:27:34,578 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:27:34,580 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:27:34,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:27:34,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:27:34,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:27:34,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:27:34" (1/1) ... [2020-10-14 22:27:34,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@91f500f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:34, skipping insertion in model container [2020-10-14 22:27:34,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:27:34" (1/1) ... [2020-10-14 22:27:34,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:27:34,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:27:35,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:27:35,813 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:27:36,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:27:36,355 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:27:36,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:36 WrapperNode [2020-10-14 22:27:36,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:27:36,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:27:36,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:27:36,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:27:36,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:36" (1/1) ... [2020-10-14 22:27:36,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:36" (1/1) ... [2020-10-14 22:27:36,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:36" (1/1) ... [2020-10-14 22:27:36,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:36" (1/1) ... [2020-10-14 22:27:36,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:36" (1/1) ... [2020-10-14 22:27:36,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:36" (1/1) ... [2020-10-14 22:27:36,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:36" (1/1) ... [2020-10-14 22:27:36,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:27:36,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:27:36,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:27:36,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:27:36,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:27:36,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:27:36,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:27:36,754 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:27:36,754 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:27:36,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:27:36,754 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:27:36,754 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:27:36,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:27:36,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:27:36,755 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:27:36,755 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:27:36,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:27:36,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:27:43,767 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:27:43,768 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:27:43,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:27:43 BoogieIcfgContainer [2020-10-14 22:27:43,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:27:43,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:27:43,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:27:43,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:27:43,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:27:34" (1/3) ... [2020-10-14 22:27:43,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b88c02a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:27:43, skipping insertion in model container [2020-10-14 22:27:43,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:36" (2/3) ... [2020-10-14 22:27:43,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b88c02a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:27:43, skipping insertion in model container [2020-10-14 22:27:43,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:27:43" (3/3) ... [2020-10-14 22:27:43,790 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label19.c [2020-10-14 22:27:43,803 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:27:43,814 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:27:43,832 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:27:43,864 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:27:43,864 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:27:43,864 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:27:43,865 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:27:43,865 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:27:43,865 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:27:43,865 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:27:43,865 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:27:43,901 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:27:43,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 22:27:43,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:43,913 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] [2020-10-14 22:27:43,914 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:43,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:43,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1980938625, now seen corresponding path program 1 times [2020-10-14 22:27:43,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:43,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573032108] [2020-10-14 22:27:43,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:44,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:44,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:44,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 22:27:44,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:44,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-14 22:27:44,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:44,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:27:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:27:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 22:27:44,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:27:44,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:44,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:44,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:44,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:44,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:44,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 22:27:44,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:44,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:27:44,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:44,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:27:44,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573032108] [2020-10-14 22:27:44,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:27:44,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:27:44,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852023551] [2020-10-14 22:27:44,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:27:44,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:27:44,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:27:44,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:27:44,891 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:27:57,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:27:57,813 INFO L93 Difference]: Finished difference Result 1689 states and 3083 transitions. [2020-10-14 22:27:57,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:27:57,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-14 22:27:57,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:27:57,842 INFO L225 Difference]: With dead ends: 1689 [2020-10-14 22:27:57,843 INFO L226 Difference]: Without dead ends: 1009 [2020-10-14 22:27:57,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:27:57,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-14 22:27:57,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 997. [2020-10-14 22:27:57,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-10-14 22:27:57,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1491 transitions. [2020-10-14 22:27:57,999 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1491 transitions. Word has length 48 [2020-10-14 22:27:57,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:27:58,000 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1491 transitions. [2020-10-14 22:27:58,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:27:58,000 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1491 transitions. [2020-10-14 22:27:58,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 22:27:58,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:58,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:27:58,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:27:58,008 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:58,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:58,009 INFO L82 PathProgramCache]: Analyzing trace with hash 690572408, now seen corresponding path program 1 times [2020-10-14 22:27:58,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:58,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848677506] [2020-10-14 22:27:58,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:58,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:58,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:59,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:59,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 22:27:59,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:27:59,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1555 [2020-10-14 22:27:59,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:59,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:59,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:27:59,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:27:59,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 22:27:59,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:27:59,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:59,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:59,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:59,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:59,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:59,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 22:27:59,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:59,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:59,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:59,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:59,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:27:59,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:27:59,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:27:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:59,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:00,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:00,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:28:00,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:00,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-14 22:28:00,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:00,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:00,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:28:00,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:00,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:28:00,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 22:28:00,538 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:28:00,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848677506] [2020-10-14 22:28:00,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:00,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:28:00,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675207960] [2020-10-14 22:28:00,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:28:00,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:00,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:28:00,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:28:00,545 INFO L87 Difference]: Start difference. First operand 997 states and 1491 transitions. Second operand 8 states. [2020-10-14 22:28:23,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:23,073 INFO L93 Difference]: Finished difference Result 2014 states and 3003 transitions. [2020-10-14 22:28:23,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:28:23,079 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2020-10-14 22:28:23,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:23,087 INFO L225 Difference]: With dead ends: 2014 [2020-10-14 22:28:23,088 INFO L226 Difference]: Without dead ends: 992 [2020-10-14 22:28:23,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:28:23,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2020-10-14 22:28:23,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 979. [2020-10-14 22:28:23,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 979 states. [2020-10-14 22:28:23,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1395 transitions. [2020-10-14 22:28:23,131 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1395 transitions. Word has length 122 [2020-10-14 22:28:23,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:23,132 INFO L479 AbstractCegarLoop]: Abstraction has 979 states and 1395 transitions. [2020-10-14 22:28:23,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:28:23,132 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1395 transitions. [2020-10-14 22:28:23,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 22:28:23,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:23,137 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:28:23,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:28:23,138 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:23,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:23,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1122089844, now seen corresponding path program 1 times [2020-10-14 22:28:23,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:23,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063068968] [2020-10-14 22:28:23,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:23,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:23,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:23,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 22:28:23,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:23,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-14 22:28:23,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:23,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:23,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:23,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:28:23,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 22:28:23,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:23,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:23,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:23,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:23,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:23,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:23,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:28:23,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:23,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:23,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:23,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:23,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:23,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:28:23,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:23,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:23,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:23,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:28:23,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:23,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 22:28:23,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:23,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:23,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:23,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:28:23,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:23,936 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:28:23,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063068968] [2020-10-14 22:28:23,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:23,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:28:23,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555784277] [2020-10-14 22:28:23,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:28:23,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:23,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:28:23,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:28:23,941 INFO L87 Difference]: Start difference. First operand 979 states and 1395 transitions. Second operand 5 states. [2020-10-14 22:28:38,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:38,561 INFO L93 Difference]: Finished difference Result 1995 states and 3210 transitions. [2020-10-14 22:28:38,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:28:38,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-10-14 22:28:38,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:38,572 INFO L225 Difference]: With dead ends: 1995 [2020-10-14 22:28:38,572 INFO L226 Difference]: Without dead ends: 1455 [2020-10-14 22:28:38,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:28:38,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2020-10-14 22:28:38,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1450. [2020-10-14 22:28:38,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1450 states. [2020-10-14 22:28:38,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2005 transitions. [2020-10-14 22:28:38,620 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2005 transitions. Word has length 135 [2020-10-14 22:28:38,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:38,621 INFO L479 AbstractCegarLoop]: Abstraction has 1450 states and 2005 transitions. [2020-10-14 22:28:38,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:28:38,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2005 transitions. [2020-10-14 22:28:38,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-14 22:28:38,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:38,627 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:28:38,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:28:38,628 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:38,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:38,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1121084235, now seen corresponding path program 1 times [2020-10-14 22:28:38,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:38,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980930777] [2020-10-14 22:28:38,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:38,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:39,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:39,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:39,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 22:28:39,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:28:39,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1229 [2020-10-14 22:28:39,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:39,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:39,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:28:39,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 22:28:39,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:28:40,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:40,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:40,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:40,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:40,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:40,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:28:40,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:40,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:40,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:40,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:40,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:40,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:40,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:28:40,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:40,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 22:28:40,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:40,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:28:40,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:40,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:28:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:40,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:40,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:40,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:28:40,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:40,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 22:28:40,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:40,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:40,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 22:28:40,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:28:40,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980930777] [2020-10-14 22:28:40,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:40,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:28:40,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667039767] [2020-10-14 22:28:40,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:28:40,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:40,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:28:40,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:28:40,487 INFO L87 Difference]: Start difference. First operand 1450 states and 2005 transitions. Second operand 7 states. [2020-10-14 22:29:00,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:00,294 INFO L93 Difference]: Finished difference Result 3402 states and 5076 transitions. [2020-10-14 22:29:00,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:29:00,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-10-14 22:29:00,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:00,310 INFO L225 Difference]: With dead ends: 3402 [2020-10-14 22:29:00,311 INFO L226 Difference]: Without dead ends: 2391 [2020-10-14 22:29:00,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:29:00,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2020-10-14 22:29:00,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2374. [2020-10-14 22:29:00,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2374 states. [2020-10-14 22:29:00,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3235 transitions. [2020-10-14 22:29:00,389 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3235 transitions. Word has length 205 [2020-10-14 22:29:00,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:00,390 INFO L479 AbstractCegarLoop]: Abstraction has 2374 states and 3235 transitions. [2020-10-14 22:29:00,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:29:00,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3235 transitions. [2020-10-14 22:29:00,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-14 22:29:00,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:00,395 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:29:00,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:29:00,396 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:00,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:00,397 INFO L82 PathProgramCache]: Analyzing trace with hash 723746105, now seen corresponding path program 1 times [2020-10-14 22:29:00,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:00,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35209066] [2020-10-14 22:29:00,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:00,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:00,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:01,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:03,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:05,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:05,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-14 22:29:05,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:29:05,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4983 [2020-10-14 22:29:05,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:05,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:05,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:29:05,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:29:05,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-14 22:29:05,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:05,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:29:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:05,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:05,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:05,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:29:05,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:05,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:29:05,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:05,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:05,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:05,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:05,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:29:05,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:29:05,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:29:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:05,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:05,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:05,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:29:05,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:05,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 22:29:05,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:05,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:29:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:29:05,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:05,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:29:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:05,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:05,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:06,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:06,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:29:06,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:29:06,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-14 22:29:06,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:06,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:06,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:29:06,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:06,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:29:06,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 6 proven. 146 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:29:06,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35209066] [2020-10-14 22:29:06,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:29:06,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:29:06,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68906598] [2020-10-14 22:29:06,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:29:06,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:29:06,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:29:06,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:29:06,257 INFO L87 Difference]: Start difference. First operand 2374 states and 3235 transitions. Second operand 10 states. [2020-10-14 22:30:05,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:05,325 INFO L93 Difference]: Finished difference Result 8235 states and 12345 transitions. [2020-10-14 22:30:05,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 22:30:05,329 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 210 [2020-10-14 22:30:05,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:05,370 INFO L225 Difference]: With dead ends: 8235 [2020-10-14 22:30:05,370 INFO L226 Difference]: Without dead ends: 6300 [2020-10-14 22:30:05,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-10-14 22:30:05,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6300 states. [2020-10-14 22:30:05,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6300 to 6144. [2020-10-14 22:30:05,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6144 states. [2020-10-14 22:30:05,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 8318 transitions. [2020-10-14 22:30:05,598 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 8318 transitions. Word has length 210 [2020-10-14 22:30:05,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:05,599 INFO L479 AbstractCegarLoop]: Abstraction has 6144 states and 8318 transitions. [2020-10-14 22:30:05,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:30:05,599 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 8318 transitions. [2020-10-14 22:30:05,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-14 22:30:05,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:05,603 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:30:05,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:30:05,603 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:05,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:05,604 INFO L82 PathProgramCache]: Analyzing trace with hash -146165980, now seen corresponding path program 1 times [2020-10-14 22:30:05,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:05,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339472977] [2020-10-14 22:30:05,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:05,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:05,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:05,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:10,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:10,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-14 22:30:10,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:30:10,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 22:30:10,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:10,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:10,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:30:10,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:30:10,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 22:30:10,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:10,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:10,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:10,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:10,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:10,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:10,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:30:10,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:10,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:10,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:10,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:10,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:10,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:10,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:11,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:11,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:30:11,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:11,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 22:30:11,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:11,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:11,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:11,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:11,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:30:11,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:11,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:30:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:11,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:11,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:11,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:11,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:30:11,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:30:11,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 22:30:11,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:11,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:11,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:11,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:11,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:30:11,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:11,368 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 22:30:11,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339472977] [2020-10-14 22:30:11,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:11,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:30:11,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599497364] [2020-10-14 22:30:11,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:30:11,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:11,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:30:11,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:30:11,373 INFO L87 Difference]: Start difference. First operand 6144 states and 8318 transitions. Second operand 5 states. [2020-10-14 22:30:29,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:29,583 INFO L93 Difference]: Finished difference Result 15035 states and 20874 transitions. [2020-10-14 22:30:29,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:30:29,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-14 22:30:29,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:29,629 INFO L225 Difference]: With dead ends: 15035 [2020-10-14 22:30:29,629 INFO L226 Difference]: Without dead ends: 9330 [2020-10-14 22:30:29,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:30:29,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9330 states. [2020-10-14 22:30:29,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9330 to 7545. [2020-10-14 22:30:29,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7545 states. [2020-10-14 22:30:29,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7545 states to 7545 states and 10430 transitions. [2020-10-14 22:30:29,881 INFO L78 Accepts]: Start accepts. Automaton has 7545 states and 10430 transitions. Word has length 221 [2020-10-14 22:30:29,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:29,882 INFO L479 AbstractCegarLoop]: Abstraction has 7545 states and 10430 transitions. [2020-10-14 22:30:29,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:30:29,882 INFO L276 IsEmpty]: Start isEmpty. Operand 7545 states and 10430 transitions. [2020-10-14 22:30:29,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-14 22:30:29,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:29,890 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:30:29,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:30:29,891 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:29,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:29,891 INFO L82 PathProgramCache]: Analyzing trace with hash 690133289, now seen corresponding path program 1 times [2020-10-14 22:30:29,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:29,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416695548] [2020-10-14 22:30:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:29,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:30,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:30,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:31,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:34,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:34,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-14 22:30:34,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:30:34,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4659 [2020-10-14 22:30:34,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:34,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:34,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 22:30:34,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:30:34,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 300 [2020-10-14 22:30:34,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:34,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:34,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:34,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:34,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:34,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:34,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 22:30:34,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:34,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:34,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:34,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:34,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:30:34,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:34,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:34,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:35,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:35,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:30:35,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:35,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-14 22:30:35,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:35,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:35,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:30:35,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:35,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:30:35,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:35,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:30:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:35,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:35,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:35,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:30:35,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:35,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 22:30:35,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:35,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:35,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:35,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:35,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:30:35,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:35,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:30:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:35,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:35,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:35,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:30:35,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:35,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 22:30:35,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:35,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:30:35,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 66 proven. 206 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 22:30:36,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416695548] [2020-10-14 22:30:36,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:36,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:30:36,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733319858] [2020-10-14 22:30:36,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:30:36,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:36,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:30:36,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:30:36,030 INFO L87 Difference]: Start difference. First operand 7545 states and 10430 transitions. Second operand 9 states. [2020-10-14 22:30:37,297 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-10-14 22:31:02,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:31:02,856 INFO L93 Difference]: Finished difference Result 19919 states and 29489 transitions. [2020-10-14 22:31:02,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 22:31:02,861 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 292 [2020-10-14 22:31:02,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:31:02,967 INFO L225 Difference]: With dead ends: 19919 [2020-10-14 22:31:02,967 INFO L226 Difference]: Without dead ends: 12813 [2020-10-14 22:31:03,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-14 22:31:03,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12813 states. [2020-10-14 22:31:03,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12813 to 9388. [2020-10-14 22:31:03,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9388 states. [2020-10-14 22:31:03,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9388 states to 9388 states and 12621 transitions. [2020-10-14 22:31:03,461 INFO L78 Accepts]: Start accepts. Automaton has 9388 states and 12621 transitions. Word has length 292 [2020-10-14 22:31:03,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:31:03,462 INFO L479 AbstractCegarLoop]: Abstraction has 9388 states and 12621 transitions. [2020-10-14 22:31:03,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:31:03,463 INFO L276 IsEmpty]: Start isEmpty. Operand 9388 states and 12621 transitions. [2020-10-14 22:31:03,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-14 22:31:03,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:31:03,473 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:31:03,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:31:03,473 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:31:03,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:31:03,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1858944705, now seen corresponding path program 1 times [2020-10-14 22:31:03,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:31:03,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353585428] [2020-10-14 22:31:03,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:31:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:03,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:03,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:04,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:06,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:07,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:07,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-14 22:31:07,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:31:07,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3528 [2020-10-14 22:31:07,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:07,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:07,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:31:07,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:31:07,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:31:07,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:07,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:31:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:07,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:07,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:07,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:31:07,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:07,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:31:07,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:07,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:07,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:31:07,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:07,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:31:07,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:07,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:31:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:07,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:07,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:07,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:31:07,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:07,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 22:31:07,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:07,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:07,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:31:07,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:07,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:31:07,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:07,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:31:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:07,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:07,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:07,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:31:07,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:07,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-14 22:31:07,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:07,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:07,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:31:07,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:31:07,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:31:07,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:07,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:31:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:07,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:07,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:07,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:31:07,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:07,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 22:31:07,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:07,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:07,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:31:07,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:31:07,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:31:07,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:08,169 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 211 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:31:08,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353585428] [2020-10-14 22:31:08,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:31:08,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:31:08,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951145948] [2020-10-14 22:31:08,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:31:08,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:31:08,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:31:08,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:31:08,171 INFO L87 Difference]: Start difference. First operand 9388 states and 12621 transitions. Second operand 7 states. [2020-10-14 22:31:29,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:31:29,184 INFO L93 Difference]: Finished difference Result 20844 states and 28116 transitions. [2020-10-14 22:31:29,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:31:29,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 315 [2020-10-14 22:31:29,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:31:29,236 INFO L225 Difference]: With dead ends: 20844 [2020-10-14 22:31:29,237 INFO L226 Difference]: Without dead ends: 11902 [2020-10-14 22:31:29,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:31:29,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11902 states. [2020-10-14 22:31:29,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11902 to 11679. [2020-10-14 22:31:29,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11679 states. [2020-10-14 22:31:29,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11679 states to 11679 states and 15317 transitions. [2020-10-14 22:31:29,743 INFO L78 Accepts]: Start accepts. Automaton has 11679 states and 15317 transitions. Word has length 315 [2020-10-14 22:31:29,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:31:29,744 INFO L479 AbstractCegarLoop]: Abstraction has 11679 states and 15317 transitions. [2020-10-14 22:31:29,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:31:29,745 INFO L276 IsEmpty]: Start isEmpty. Operand 11679 states and 15317 transitions. [2020-10-14 22:31:29,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-14 22:31:29,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:31:29,759 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:31:29,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:31:29,760 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:31:29,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:31:29,760 INFO L82 PathProgramCache]: Analyzing trace with hash -2075407649, now seen corresponding path program 1 times [2020-10-14 22:31:29,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:31:29,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622445777] [2020-10-14 22:31:29,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:31:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:29,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:30,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:30,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking...