/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/Problem02_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:23:10,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:23:10,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:23:10,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:23:10,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:23:10,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:23:10,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:23:10,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:23:10,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:23:10,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:23:10,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:23:10,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:23:10,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:23:10,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:23:10,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:23:10,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:23:10,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:23:10,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:23:10,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:23:10,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:23:10,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:23:10,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:23:10,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:23:10,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:23:10,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:23:10,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:23:10,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:23:10,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:23:10,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:23:10,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:23:10,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:23:10,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:23:10,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:23:10,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:23:10,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:23:10,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:23:10,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:23:10,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:23:10,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:23:10,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:23:10,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:23:10,717 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 12:23:10,758 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:23:10,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:23:10,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:23:10,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:23:10,761 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:23:10,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:23:10,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:23:10,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:23:10,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:23:10,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:23:10,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:23:10,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:23:10,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:23:10,764 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:23:10,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:23:10,765 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:23:10,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:23:10,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:23:10,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:23:10,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:23:10,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:23:10,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:23:10,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:23:10,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:23:10,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:23:10,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:23:10,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:23:10,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:23:10,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:23:10,768 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 12:23:11,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:23:11,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:23:11,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:23:11,289 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:23:11,289 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:23:11,290 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label08.c [2020-09-25 12:23:11,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f27df73b/b59ab3996631416caddb36aed5cebff4/FLAG01c65f106 [2020-09-25 12:23:12,083 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:23:12,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label08.c [2020-09-25 12:23:12,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f27df73b/b59ab3996631416caddb36aed5cebff4/FLAG01c65f106 [2020-09-25 12:23:12,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f27df73b/b59ab3996631416caddb36aed5cebff4 [2020-09-25 12:23:12,303 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:23:12,309 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:23:12,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:23:12,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:23:12,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:23:12,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:23:12" (1/1) ... [2020-09-25 12:23:12,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0614b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:12, skipping insertion in model container [2020-09-25 12:23:12,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:23:12" (1/1) ... [2020-09-25 12:23:12,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:23:12,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:23:12,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:23:12,979 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:23:13,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:23:13,136 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:23:13,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:13 WrapperNode [2020-09-25 12:23:13,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:23:13,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:23:13,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:23:13,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:23:13,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:13" (1/1) ... [2020-09-25 12:23:13,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:13" (1/1) ... [2020-09-25 12:23:13,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:13" (1/1) ... [2020-09-25 12:23:13,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:13" (1/1) ... [2020-09-25 12:23:13,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:13" (1/1) ... [2020-09-25 12:23:13,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:13" (1/1) ... [2020-09-25 12:23:13,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:13" (1/1) ... [2020-09-25 12:23:13,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:23:13,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:23:13,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:23:13,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:23:13,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:13" (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 12:23:13,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:23:13,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:23:13,357 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:23:13,357 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:23:13,357 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:23:13,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:23:13,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:23:13,357 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:23:13,358 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:23:13,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:23:13,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:23:14,755 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:23:14,755 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:23:14,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:23:14 BoogieIcfgContainer [2020-09-25 12:23:14,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:23:14,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:23:14,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:23:14,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:23:14,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:23:12" (1/3) ... [2020-09-25 12:23:14,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e437f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:23:14, skipping insertion in model container [2020-09-25 12:23:14,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:13" (2/3) ... [2020-09-25 12:23:14,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e437f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:23:14, skipping insertion in model container [2020-09-25 12:23:14,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:23:14" (3/3) ... [2020-09-25 12:23:14,791 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label08.c [2020-09-25 12:23:14,804 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:23:14,821 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:23:14,845 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:23:14,886 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:23:14,887 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:23:14,887 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:23:14,887 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:23:14,887 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:23:14,887 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:23:14,887 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:23:14,888 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:23:14,931 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:23:14,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 12:23:14,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:14,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:23:14,967 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:14,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:14,974 INFO L82 PathProgramCache]: Analyzing trace with hash 524055129, now seen corresponding path program 1 times [2020-09-25 12:23:14,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:14,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967537662] [2020-09-25 12:23:14,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:15,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:15,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:15,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:17,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:17,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:18,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:19,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:20,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:20,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:20,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 12:23:20,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:23:20,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 12:23:20,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:20,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:23:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:23:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 12:23:20,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:23:20,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:20,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:20,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:20,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:20,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:20,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:23:20,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:20,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:20,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:23:20,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:20,582 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 12:23:20,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967537662] [2020-09-25 12:23:20,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:23:20,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:23:20,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336608619] [2020-09-25 12:23:20,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:23:20,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:20,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:23:20,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:23:20,616 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 12:23:22,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:22,868 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 12:23:22,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:23:22,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-25 12:23:22,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:22,898 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 12:23:22,902 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 12:23:22,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:23:22,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 12:23:23,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 12:23:23,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 12:23:23,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 12:23:23,054 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 148 [2020-09-25 12:23:23,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:23,056 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 12:23:23,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:23:23,056 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 12:23:23,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 12:23:23,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:23,063 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:23:23,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:23:23,063 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:23,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:23,064 INFO L82 PathProgramCache]: Analyzing trace with hash 2109946541, now seen corresponding path program 1 times [2020-09-25 12:23:23,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:23,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668272217] [2020-09-25 12:23:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:23,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:23,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:23,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:23,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:23,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:24,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:25,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:25,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:25,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:27,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:27,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:27,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:28,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:28,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:28,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 12:23:28,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:23:28,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 12:23:28,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:28,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:28,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:28,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 12:23:28,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 12:23:28,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:28,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:28,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:28,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:28,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:28,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:28,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:23:28,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:28,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:28,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:28,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:28,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:28,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:28,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:28,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:28,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:28,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:23:28,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:28,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:23:28,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:28,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:28,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:28,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:28,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 12:23:28,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:28,416 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:28,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668272217] [2020-09-25 12:23:28,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:28,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:23:28,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393278015] [2020-09-25 12:23:28,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:23:28,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:28,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:23:28,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:23:28,424 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 12:23:30,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:30,679 INFO L93 Difference]: Finished difference Result 1806 states and 2276 transitions. [2020-09-25 12:23:30,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:23:30,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-25 12:23:30,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:30,690 INFO L225 Difference]: With dead ends: 1806 [2020-09-25 12:23:30,691 INFO L226 Difference]: Without dead ends: 1095 [2020-09-25 12:23:30,694 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 [2020-09-25 12:23:30,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2020-09-25 12:23:30,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1039. [2020-09-25 12:23:30,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 12:23:30,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1246 transitions. [2020-09-25 12:23:30,744 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1246 transitions. Word has length 166 [2020-09-25 12:23:30,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:30,745 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1246 transitions. [2020-09-25 12:23:30,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:23:30,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1246 transitions. [2020-09-25 12:23:30,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 12:23:30,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:30,751 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:30,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:23:30,752 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:30,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:30,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1378845784, now seen corresponding path program 1 times [2020-09-25 12:23:30,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:30,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928682820] [2020-09-25 12:23:30,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:30,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:30,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:31,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:31,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:31,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:32,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:33,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:33,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:34,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:34,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:35,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:35,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 12:23:35,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:23:35,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:23:35,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:35,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 12:23:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 12:23:35,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:35,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:35,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:35,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:35,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:35,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:35,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:23:35,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:35,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:35,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:35,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:35,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:35,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:35,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:35,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:36,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:36,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:23:36,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:36,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:23:36,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:36,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:23:36,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:36,102 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:36,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928682820] [2020-09-25 12:23:36,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:36,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:23:36,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119610428] [2020-09-25 12:23:36,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:23:36,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:36,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:23:36,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:23:36,105 INFO L87 Difference]: Start difference. First operand 1039 states and 1246 transitions. Second operand 6 states. [2020-09-25 12:23:38,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:38,070 INFO L93 Difference]: Finished difference Result 2678 states and 3328 transitions. [2020-09-25 12:23:38,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:23:38,071 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-09-25 12:23:38,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:38,088 INFO L225 Difference]: With dead ends: 2678 [2020-09-25 12:23:38,088 INFO L226 Difference]: Without dead ends: 1661 [2020-09-25 12:23:38,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:23:38,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2020-09-25 12:23:38,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1488. [2020-09-25 12:23:38,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2020-09-25 12:23:38,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1838 transitions. [2020-09-25 12:23:38,178 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1838 transitions. Word has length 172 [2020-09-25 12:23:38,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:38,181 INFO L479 AbstractCegarLoop]: Abstraction has 1488 states and 1838 transitions. [2020-09-25 12:23:38,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:23:38,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1838 transitions. [2020-09-25 12:23:38,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 12:23:38,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:38,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:38,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:23:38,190 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:38,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:38,190 INFO L82 PathProgramCache]: Analyzing trace with hash -2122100332, now seen corresponding path program 1 times [2020-09-25 12:23:38,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:38,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083757906] [2020-09-25 12:23:38,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:38,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:38,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:38,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:39,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:41,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:41,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:43,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:43,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 12:23:43,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:23:43,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:23:43,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:43,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:43,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:43,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 12:23:43,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 12:23:43,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:23:43,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:43,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:43,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:43,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:43,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:43,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:23:43,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:43,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:43,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:43,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:43,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:43,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:43,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:43,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:43,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:43,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 12:23:43,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:43,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 12:23:43,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:43,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:43,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:43,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:43,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:23:43,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:43,472 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:43,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083757906] [2020-09-25 12:23:43,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:43,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:23:43,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691966722] [2020-09-25 12:23:43,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:23:43,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:43,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:23:43,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:23:43,477 INFO L87 Difference]: Start difference. First operand 1488 states and 1838 transitions. Second operand 5 states. [2020-09-25 12:23:45,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:45,365 INFO L93 Difference]: Finished difference Result 3453 states and 4443 transitions. [2020-09-25 12:23:45,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:23:45,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 12:23:45,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:45,378 INFO L225 Difference]: With dead ends: 3453 [2020-09-25 12:23:45,378 INFO L226 Difference]: Without dead ends: 1987 [2020-09-25 12:23:45,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:23:45,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2020-09-25 12:23:45,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1946. [2020-09-25 12:23:45,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1946 states. [2020-09-25 12:23:45,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 2516 transitions. [2020-09-25 12:23:45,445 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 2516 transitions. Word has length 182 [2020-09-25 12:23:45,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:45,445 INFO L479 AbstractCegarLoop]: Abstraction has 1946 states and 2516 transitions. [2020-09-25 12:23:45,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:23:45,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 2516 transitions. [2020-09-25 12:23:45,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-25 12:23:45,457 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:45,457 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:45,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:23:45,458 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:45,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:45,458 INFO L82 PathProgramCache]: Analyzing trace with hash 158347608, now seen corresponding path program 1 times [2020-09-25 12:23:45,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:45,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349445951] [2020-09-25 12:23:45,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:45,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:45,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:45,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:45,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:47,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:50,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:50,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-25 12:23:50,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:23:50,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4696 [2020-09-25 12:23:50,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:50,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:23:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 12:23:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-09-25 12:23:50,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:50,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:50,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:50,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:50,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:50,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:50,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:23:50,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:50,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:50,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:50,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:23:50,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:50,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:50,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:50,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:23:50,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:50,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:23:50,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:50,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:50,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:50,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:50,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:23:50,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:50,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 12:23:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:50,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:50,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:50,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:50,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 12:23:50,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:23:50,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 12:23:50,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:50,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:50,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:50,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:23:50,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 12:23:50,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:23:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 96 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:23:50,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349445951] [2020-09-25 12:23:50,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:50,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:23:50,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239743426] [2020-09-25 12:23:50,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:23:50,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:50,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:23:50,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:23:50,685 INFO L87 Difference]: Start difference. First operand 1946 states and 2516 transitions. Second operand 6 states. [2020-09-25 12:23:52,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:52,932 INFO L93 Difference]: Finished difference Result 4919 states and 6745 transitions. [2020-09-25 12:23:52,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:23:52,933 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 257 [2020-09-25 12:23:52,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:52,967 INFO L225 Difference]: With dead ends: 4919 [2020-09-25 12:23:52,968 INFO L226 Difference]: Without dead ends: 2995 [2020-09-25 12:23:52,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:23:52,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2020-09-25 12:23:53,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 2873. [2020-09-25 12:23:53,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2020-09-25 12:23:53,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3645 transitions. [2020-09-25 12:23:53,122 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3645 transitions. Word has length 257 [2020-09-25 12:23:53,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:53,123 INFO L479 AbstractCegarLoop]: Abstraction has 2873 states and 3645 transitions. [2020-09-25 12:23:53,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:23:53,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3645 transitions. [2020-09-25 12:23:53,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-25 12:23:53,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:53,140 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:23:53,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:23:53,140 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:53,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:53,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1900460733, now seen corresponding path program 1 times [2020-09-25 12:23:53,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:53,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706054590] [2020-09-25 12:23:53,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:53,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:53,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:53,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:54,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:54,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:54,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:55,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:56,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:58,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:58,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-09-25 12:23:58,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:23:58,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 12:23:58,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:58,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:58,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:23:58,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 12:23:58,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-09-25 12:23:58,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:58,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:58,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:58,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:58,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:58,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:58,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:23:58,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:58,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:58,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:58,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:58,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:58,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:58,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:58,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:58,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:58,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:23:58,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:58,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 12:23:58,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:58,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:58,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:58,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:58,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 12:23:58,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:58,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 12:23:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:58,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:58,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:58,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:58,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:58,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 12:23:58,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:23:58,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-25 12:23:58,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:58,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:58,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:58,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:23:58,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 12:23:58,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 48 proven. 72 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:23:58,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706054590] [2020-09-25 12:23:58,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:59,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:23:59,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772691115] [2020-09-25 12:23:59,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:23:59,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:59,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:23:59,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:23:59,004 INFO L87 Difference]: Start difference. First operand 2873 states and 3645 transitions. Second operand 7 states. [2020-09-25 12:24:02,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:24:02,275 INFO L93 Difference]: Finished difference Result 8440 states and 11884 transitions. [2020-09-25 12:24:02,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:24:02,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 268 [2020-09-25 12:24:02,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:24:02,317 INFO L225 Difference]: With dead ends: 8440 [2020-09-25 12:24:02,317 INFO L226 Difference]: Without dead ends: 5589 [2020-09-25 12:24:02,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:24:02,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5589 states. [2020-09-25 12:24:02,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5589 to 4399. [2020-09-25 12:24:02,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4399 states. [2020-09-25 12:24:02,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4399 states to 4399 states and 5599 transitions. [2020-09-25 12:24:02,507 INFO L78 Accepts]: Start accepts. Automaton has 4399 states and 5599 transitions. Word has length 268 [2020-09-25 12:24:02,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:24:02,507 INFO L479 AbstractCegarLoop]: Abstraction has 4399 states and 5599 transitions. [2020-09-25 12:24:02,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:24:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 4399 states and 5599 transitions. [2020-09-25 12:24:02,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-09-25 12:24:02,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:02,531 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:02,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:24:02,531 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:02,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:02,532 INFO L82 PathProgramCache]: Analyzing trace with hash -695720818, now seen corresponding path program 1 times [2020-09-25 12:24:02,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:02,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285998060] [2020-09-25 12:24:02,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:02,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:02,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:02,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:02,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking...