/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 SingleStatement --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=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:26:45,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:26:45,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:26:45,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:26:45,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:26:45,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:26:45,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:26:45,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:26:45,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:26:45,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:26:45,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:26:45,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:26:45,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:26:45,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:26:45,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:26:45,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:26:45,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:26:45,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:26:45,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:26:45,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:26:45,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:26:45,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:26:45,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:26:45,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:26:45,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:26:45,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:26:45,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:26:45,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:26:45,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:26:45,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:26:45,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:26:45,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:26:45,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:26:45,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:26:45,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:26:45,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:26:45,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:26:45,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:26:45,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:26:45,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:26:45,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:26:45,755 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 [2020-09-25 12:26:45,799 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:26:45,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:26:45,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:26:45,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:26:45,802 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:26:45,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:26:45,802 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:26:45,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:26:45,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:26:45,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:26:45,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:26:45,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:26:45,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:26:45,803 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:26:45,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:26:45,804 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:26:45,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:26:45,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:26:45,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:26:45,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:26:45,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:26:45,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:26:45,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:26:45,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:26:45,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:26:45,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:26:45,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:26:45,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:26:45,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:26:45,807 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 -> SingleStatement 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=0.3;log-additional-information=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=0.3;log-additional-information=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=0.3;log-additional-information=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=0.3;log-additional-information=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=0.3;log-additional-information=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=0.3;log-additional-information=true; [2020-09-25 12:26:46,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:26:46,319 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:26:46,323 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:26:46,325 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:26:46,325 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:26:46,326 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-09-25 12:26:46,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fafe9e892/257adad4b78443908cde25493bbe3c18/FLAG32e7a4409 [2020-09-25 12:26:47,016 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:26:47,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-09-25 12:26:47,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fafe9e892/257adad4b78443908cde25493bbe3c18/FLAG32e7a4409 [2020-09-25 12:26:47,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fafe9e892/257adad4b78443908cde25493bbe3c18 [2020-09-25 12:26:47,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:26:47,250 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:26:47,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:47,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:26:47,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:26:47,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:47" (1/1) ... [2020-09-25 12:26:47,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccc0ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:47, skipping insertion in model container [2020-09-25 12:26:47,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:47" (1/1) ... [2020-09-25 12:26:47,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:26:47,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:26:47,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:47,855 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:26:48,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:48,124 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:26:48,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:48 WrapperNode [2020-09-25 12:26:48,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:48,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:26:48,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:26:48,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:26:48,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:48" (1/1) ... [2020-09-25 12:26:48,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:48" (1/1) ... [2020-09-25 12:26:48,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:48" (1/1) ... [2020-09-25 12:26:48,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:48" (1/1) ... [2020-09-25 12:26:48,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:48" (1/1) ... [2020-09-25 12:26:48,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:48" (1/1) ... [2020-09-25 12:26:48,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:48" (1/1) ... [2020-09-25 12:26:48,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:26:48,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:26:48,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:26:48,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:26:48,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:48" (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 [2020-09-25 12:26:48,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:26:48,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:26:48,337 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:26:48,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:26:48,337 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:26:48,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:26:48,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:26:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:26:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:26:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:26:48,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:26:49,779 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:26:49,779 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:26:49,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:49 BoogieIcfgContainer [2020-09-25 12:26:49,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:26:49,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:26:49,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:26:49,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:26:49,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:26:47" (1/3) ... [2020-09-25 12:26:49,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411ae65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:49, skipping insertion in model container [2020-09-25 12:26:49,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:48" (2/3) ... [2020-09-25 12:26:49,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411ae65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:49, skipping insertion in model container [2020-09-25 12:26:49,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:49" (3/3) ... [2020-09-25 12:26:49,799 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label31.c [2020-09-25 12:26:49,811 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:26:49,824 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:26:49,848 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:26:49,882 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:26:49,882 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:26:49,882 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:26:49,882 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:26:49,883 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:26:49,883 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:26:49,883 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:26:49,883 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:26:49,917 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:26:49,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 12:26:49,929 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:49,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:49,931 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:49,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:49,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1703669257, now seen corresponding path program 1 times [2020-09-25 12:26:49,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:49,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159932049] [2020-09-25 12:26:49,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:50,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:50,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:50,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:51,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:51,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 12:26:51,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:26:51,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-25 12:26:51,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:51,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:51,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 12:26:51,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:26:51,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:51,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:51,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:51,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:51,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:51,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:26:51,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:51,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:51,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:51,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159932049] [2020-09-25 12:26:51,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:51,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:26:51,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611532566] [2020-09-25 12:26:51,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:26:51,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:51,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:26:51,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:26:51,391 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:26:53,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:53,343 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 12:26:53,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:26:53,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-25 12:26:53,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:53,388 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 12:26:53,389 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 12:26:53,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:26:53,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 12:26:53,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 12:26:53,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 12:26:53,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 12:26:53,492 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 62 [2020-09-25 12:26:53,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:53,493 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 12:26:53,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:26:53,494 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 12:26:53,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 12:26:53,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:53,521 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:53,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:26:53,524 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:53,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:53,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1996719641, now seen corresponding path program 1 times [2020-09-25 12:26:53,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:53,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540825091] [2020-09-25 12:26:53,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:53,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:53,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:53,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:54,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:54,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:57,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:57,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 12:26:57,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:57,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3809 [2020-09-25 12:26:57,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:57,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:57,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:26:57,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:26:57,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 12:26:57,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:57,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:57,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:57,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:57,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:57,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:57,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:26:57,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:57,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:57,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:57,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:57,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:26:57,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:57,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:57,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:57,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:57,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:57,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:26:57,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:57,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 12:26:57,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:57,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:57,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:57,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:57,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:26:57,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:57,826 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:26:57,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540825091] [2020-09-25 12:26:57,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:57,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:26:57,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305234806] [2020-09-25 12:26:57,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:26:57,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:57,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:26:57,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:26:57,831 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 12:26:59,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:59,745 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 12:26:59,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:26:59,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 12:26:59,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:59,751 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 12:26:59,751 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 12:26:59,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:26:59,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 12:26:59,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 12:26:59,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 12:26:59,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 12:26:59,806 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 141 [2020-09-25 12:26:59,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:59,809 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 12:26:59,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:26:59,810 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 12:26:59,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 12:26:59,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:59,824 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:59,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:26:59,825 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:59,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:59,825 INFO L82 PathProgramCache]: Analyzing trace with hash -617946683, now seen corresponding path program 1 times [2020-09-25 12:26:59,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:59,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82651564] [2020-09-25 12:26:59,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:59,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:59,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:00,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:00,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:01,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:01,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:01,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:02,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:04,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:04,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 12:27:04,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:27:04,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:27:04,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:04,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:04,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:04,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:04,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 12:27:04,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:04,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:04,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:05,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:05,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:05,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:05,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:27:05,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:05,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:05,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:05,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:05,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:05,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:05,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:05,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:05,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:05,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:05,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:05,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 12:27:05,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:05,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:05,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:05,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:05,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:05,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:05,257 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 7 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:05,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82651564] [2020-09-25 12:27:05,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:05,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:27:05,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674812110] [2020-09-25 12:27:05,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:27:05,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:05,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:27:05,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:27:05,260 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 8 states. [2020-09-25 12:27:08,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:08,799 INFO L93 Difference]: Finished difference Result 1984 states and 2586 transitions. [2020-09-25 12:27:08,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:27:08,800 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2020-09-25 12:27:08,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:08,817 INFO L225 Difference]: With dead ends: 1984 [2020-09-25 12:27:08,817 INFO L226 Difference]: Without dead ends: 1454 [2020-09-25 12:27:08,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:27:08,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2020-09-25 12:27:08,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1361. [2020-09-25 12:27:08,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1361 states. [2020-09-25 12:27:08,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1737 transitions. [2020-09-25 12:27:08,915 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1737 transitions. Word has length 151 [2020-09-25 12:27:08,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:08,916 INFO L479 AbstractCegarLoop]: Abstraction has 1361 states and 1737 transitions. [2020-09-25 12:27:08,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:27:08,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1737 transitions. [2020-09-25 12:27:08,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 12:27:08,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:08,922 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:27:08,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:27:08,922 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:08,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:08,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1755229107, now seen corresponding path program 1 times [2020-09-25 12:27:08,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:08,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532218660] [2020-09-25 12:27:08,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:08,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:09,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:09,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:11,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:11,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 12:27:11,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:27:11,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2074 [2020-09-25 12:27:11,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:11,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:11,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:11,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:27:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 12:27:11,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:11,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:11,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:11,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:11,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:11,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:11,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:27:11,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:11,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:11,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:11,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:11,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:27:11,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:11,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:11,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:11,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:11,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 12:27:11,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:11,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 12:27:11,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:11,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:11,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:11,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:11,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:27:11,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:11,387 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:11,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532218660] [2020-09-25 12:27:11,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:11,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:27:11,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190619871] [2020-09-25 12:27:11,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:27:11,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:11,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:27:11,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:11,392 INFO L87 Difference]: Start difference. First operand 1361 states and 1737 transitions. Second operand 7 states. [2020-09-25 12:27:13,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:13,572 INFO L93 Difference]: Finished difference Result 3423 states and 4611 transitions. [2020-09-25 12:27:13,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:27:13,573 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-09-25 12:27:13,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:13,594 INFO L225 Difference]: With dead ends: 3423 [2020-09-25 12:27:13,595 INFO L226 Difference]: Without dead ends: 2227 [2020-09-25 12:27:13,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:27:13,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2020-09-25 12:27:13,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2153. [2020-09-25 12:27:13,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2020-09-25 12:27:13,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2640 transitions. [2020-09-25 12:27:13,694 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2640 transitions. Word has length 153 [2020-09-25 12:27:13,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:13,695 INFO L479 AbstractCegarLoop]: Abstraction has 2153 states and 2640 transitions. [2020-09-25 12:27:13,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:27:13,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2640 transitions. [2020-09-25 12:27:13,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 12:27:13,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:13,701 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:27:13,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:27:13,701 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:13,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:13,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1872349141, now seen corresponding path program 1 times [2020-09-25 12:27:13,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:13,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816010783] [2020-09-25 12:27:13,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:13,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:13,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:14,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:14,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:15,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:15,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:17,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:18,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:18,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 12:27:18,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:27:18,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 12:27:18,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:18,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:18,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:18,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 12:27:18,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:18,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:18,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:18,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:18,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:18,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:18,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:27:18,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:18,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:18,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:18,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:18,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:19,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:19,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:27:19,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:19,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 12:27:19,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:19,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:19,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:19,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:19,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:27:19,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:19,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:27:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:19,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:19,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:19,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:19,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:19,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 12:27:19,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:19,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:19,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:19,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:19,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:19,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:19,666 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 158 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:27:19,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816010783] [2020-09-25 12:27:19,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:19,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:27:19,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514325027] [2020-09-25 12:27:19,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:27:19,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:19,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:27:19,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:27:19,672 INFO L87 Difference]: Start difference. First operand 2153 states and 2640 transitions. Second operand 10 states. [2020-09-25 12:27:23,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:23,255 INFO L93 Difference]: Finished difference Result 4790 states and 6218 transitions. [2020-09-25 12:27:23,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 12:27:23,256 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 230 [2020-09-25 12:27:23,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:23,272 INFO L225 Difference]: With dead ends: 4790 [2020-09-25 12:27:23,272 INFO L226 Difference]: Without dead ends: 2802 [2020-09-25 12:27:23,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:27:23,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2020-09-25 12:27:23,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 2705. [2020-09-25 12:27:23,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2705 states. [2020-09-25 12:27:23,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3329 transitions. [2020-09-25 12:27:23,364 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3329 transitions. Word has length 230 [2020-09-25 12:27:23,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:23,364 INFO L479 AbstractCegarLoop]: Abstraction has 2705 states and 3329 transitions. [2020-09-25 12:27:23,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:27:23,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3329 transitions. [2020-09-25 12:27:23,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-25 12:27:23,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:23,371 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:27:23,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:27:23,372 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:23,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:23,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1975871710, now seen corresponding path program 1 times [2020-09-25 12:27:23,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:23,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286807707] [2020-09-25 12:27:23,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:23,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:23,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:23,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:23,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:24,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:25,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:26,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:28,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:28,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-25 12:27:28,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:27:28,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 12:27:28,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:28,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:28,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:27:28,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:27:28,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 12:27:28,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:28,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:28,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:28,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:28,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:28,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:28,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 12:27:28,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:28,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:28,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:27:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:27:28,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:28,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:28,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:28,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:28,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:28,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:28,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:28,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 12:27:28,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:28,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:28,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:28,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 12:27:28,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:28,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 12:27:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:28,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:28,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:29,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:29,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:27:29,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:29,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-25 12:27:29,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:29,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:29,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:29,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:29,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 12:27:29,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:29,227 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 12:27:29,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286807707] [2020-09-25 12:27:29,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:29,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:27:29,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111588014] [2020-09-25 12:27:29,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:27:29,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:29,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:27:29,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:27:29,230 INFO L87 Difference]: Start difference. First operand 2705 states and 3329 transitions. Second operand 9 states. [2020-09-25 12:27:33,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:33,061 INFO L93 Difference]: Finished difference Result 6055 states and 7771 transitions. [2020-09-25 12:27:33,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:27:33,062 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 234 [2020-09-25 12:27:33,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:33,081 INFO L225 Difference]: With dead ends: 6055 [2020-09-25 12:27:33,081 INFO L226 Difference]: Without dead ends: 3495 [2020-09-25 12:27:33,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:27:33,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2020-09-25 12:27:33,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 3310. [2020-09-25 12:27:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3310 states. [2020-09-25 12:27:33,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3310 states to 3310 states and 4067 transitions. [2020-09-25 12:27:33,218 INFO L78 Accepts]: Start accepts. Automaton has 3310 states and 4067 transitions. Word has length 234 [2020-09-25 12:27:33,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:33,219 INFO L479 AbstractCegarLoop]: Abstraction has 3310 states and 4067 transitions. [2020-09-25 12:27:33,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:27:33,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3310 states and 4067 transitions. [2020-09-25 12:27:33,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 12:27:33,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:33,231 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:27:33,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:27:33,231 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:33,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:33,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1455418807, now seen corresponding path program 1 times [2020-09-25 12:27:33,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:33,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520088015] [2020-09-25 12:27:33,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:33,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:33,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:33,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:33,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:34,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:34,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking...