/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_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:25:19,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:25:19,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:25:19,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:25:19,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:25:19,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:25:19,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:25:19,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:25:19,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:25:19,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:25:19,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:25:19,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:25:19,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:25:19,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:25:19,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:25:19,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:25:19,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:25:19,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:25:19,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:25:19,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:25:19,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:25:19,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:25:19,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:25:19,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:25:19,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:25:19,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:25:19,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:25:19,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:25:19,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:25:19,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:25:19,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:25:19,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:25:19,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:25:19,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:25:19,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:25:19,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:25:19,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:25:19,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:25:19,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:25:19,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:25:19,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:25:19,792 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 12:25:19,822 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:25:19,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:25:19,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:25:19,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:25:19,824 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:25:19,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:25:19,825 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:25:19,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:25:19,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:25:19,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:25:19,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:25:19,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:25:19,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:25:19,826 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:25:19,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:25:19,828 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:25:19,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:25:19,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:25:19,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:25:19,829 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:25:19,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:25:19,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:25:19,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:25:19,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:25:19,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:25:19,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:25:19,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:25:19,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:25:19,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:25:19,831 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 12:25:20,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:25:20,315 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:25:20,321 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:25:20,323 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:25:20,325 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:25:20,326 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2020-09-25 12:25:20,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cafe9d5a3/69294ebc88614009ba16658bce7436ba/FLAG28cc17064 [2020-09-25 12:25:21,066 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:25:21,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2020-09-25 12:25:21,095 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cafe9d5a3/69294ebc88614009ba16658bce7436ba/FLAG28cc17064 [2020-09-25 12:25:21,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cafe9d5a3/69294ebc88614009ba16658bce7436ba [2020-09-25 12:25:21,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:25:21,324 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:25:21,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:25:21,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:25:21,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:25:21,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:25:21" (1/1) ... [2020-09-25 12:25:21,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:21, skipping insertion in model container [2020-09-25 12:25:21,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:25:21" (1/1) ... [2020-09-25 12:25:21,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:25:21,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:25:22,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:25:22,031 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:25:22,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:25:22,287 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:25:22,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:22 WrapperNode [2020-09-25 12:25:22,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:25:22,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:25:22,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:25:22,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:25:22,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:22" (1/1) ... [2020-09-25 12:25:22,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:22" (1/1) ... [2020-09-25 12:25:22,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:22" (1/1) ... [2020-09-25 12:25:22,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:22" (1/1) ... [2020-09-25 12:25:22,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:22" (1/1) ... [2020-09-25 12:25:22,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:22" (1/1) ... [2020-09-25 12:25:22,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:22" (1/1) ... [2020-09-25 12:25:22,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:25:22,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:25:22,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:25:22,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:25:22,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:22" (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 12:25:22,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:25:22,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:25:22,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:25:22,538 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:25:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:25:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:25:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:25:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:25:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:25:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:25:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:25:23,926 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:25:23,926 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:25:23,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:23 BoogieIcfgContainer [2020-09-25 12:25:23,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:25:23,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:25:23,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:25:23,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:25:23,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:25:21" (1/3) ... [2020-09-25 12:25:23,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:23, skipping insertion in model container [2020-09-25 12:25:23,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:22" (2/3) ... [2020-09-25 12:25:23,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:23, skipping insertion in model container [2020-09-25 12:25:23,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:23" (3/3) ... [2020-09-25 12:25:23,946 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label52.c [2020-09-25 12:25:23,958 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:25:23,970 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:25:23,992 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:25:24,027 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:25:24,028 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:25:24,028 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:25:24,028 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:25:24,028 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:25:24,028 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:25:24,028 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:25:24,029 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:25:24,062 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:25:24,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-25 12:25:24,083 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:24,085 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] [2020-09-25 12:25:24,085 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:24,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:24,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1349342961, now seen corresponding path program 1 times [2020-09-25 12:25:24,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:24,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-25 12:25:24,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:24,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:24,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:25,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:26,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:26,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:26,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:27,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:28,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:28,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:29,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:29,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 12:25:29,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:25:29,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 12:25:29,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:29,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:29,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:25:29,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:25:29,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 12:25:29,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:25:29,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:29,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:29,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:29,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:29,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:29,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 12:25:29,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:29,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:29,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:29,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:29,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:25:29,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:29,661 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 12:25:29,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-25 12:25:29,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:25:29,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:25:29,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954481346] [2020-09-25 12:25:29,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:25:29,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:29,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:25:29,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:25:29,695 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 12:25:31,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:31,981 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 12:25:31,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:25:31,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-09-25 12:25:31,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:32,024 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 12:25:32,024 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 12:25:32,036 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 12:25:32,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 12:25:32,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 12:25:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 12:25:32,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 12:25:32,140 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 130 [2020-09-25 12:25:32,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:32,141 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 12:25:32,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:25:32,141 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 12:25:32,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 12:25:32,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:32,152 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] [2020-09-25 12:25:32,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:25:32,155 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:32,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:32,155 INFO L82 PathProgramCache]: Analyzing trace with hash -240509204, now seen corresponding path program 1 times [2020-09-25 12:25:32,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:32,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407026576] [2020-09-25 12:25:32,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:32,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:32,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:32,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:33,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:35,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:35,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:37,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:37,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 12:25:37,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:25:37,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 12:25:37,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:37,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 12:25:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 12:25:37,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:37,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:37,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:37,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:37,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:37,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:37,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:25:37,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:37,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:37,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:37,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:37,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:37,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:37,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:37,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:37,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:37,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 12:25:37,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:37,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 12:25:37,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:37,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:37,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:37,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:25:37,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:37,464 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 12:25:37,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407026576] [2020-09-25 12:25:37,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:37,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:25:37,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757947814] [2020-09-25 12:25:37,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:25:37,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:37,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:25:37,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:37,469 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 5 states. [2020-09-25 12:25:39,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:39,268 INFO L93 Difference]: Finished difference Result 1526 states and 1937 transitions. [2020-09-25 12:25:39,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:25:39,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-09-25 12:25:39,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:39,275 INFO L225 Difference]: With dead ends: 1526 [2020-09-25 12:25:39,275 INFO L226 Difference]: Without dead ends: 560 [2020-09-25 12:25:39,279 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 12:25:39,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-09-25 12:25:39,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 547. [2020-09-25 12:25:39,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-09-25 12:25:39,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 662 transitions. [2020-09-25 12:25:39,308 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 662 transitions. Word has length 164 [2020-09-25 12:25:39,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:39,309 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 662 transitions. [2020-09-25 12:25:39,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:25:39,309 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 662 transitions. [2020-09-25 12:25:39,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 12:25:39,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:39,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:39,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:25:39,314 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:39,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:39,314 INFO L82 PathProgramCache]: Analyzing trace with hash -507434900, now seen corresponding path program 1 times [2020-09-25 12:25:39,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:39,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561704215] [2020-09-25 12:25:39,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:39,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:39,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:39,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:40,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:41,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:42,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:42,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:43,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:44,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:44,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 12:25:44,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:25:44,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 12:25:44,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:44,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:44,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:25:44,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 12:25:44,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 12:25:44,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:25:45,126 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 33 [2020-09-25 12:25:45,369 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 28 [2020-09-25 12:25:45,500 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 25 [2020-09-25 12:25:45,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:45,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:45,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:45,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:45,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:45,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:25:45,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:45,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:45,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:45,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:45,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:45,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:45,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:45,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:45,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:45,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:25:45,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:45,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 12:25:45,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:45,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:45,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:25:45,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:45,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 12:25:45,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:25:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:46,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561704215] [2020-09-25 12:25:46,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:46,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 12:25:46,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862741440] [2020-09-25 12:25:46,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 12:25:46,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:46,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 12:25:46,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:25:46,083 INFO L87 Difference]: Start difference. First operand 547 states and 662 transitions. Second operand 16 states. [2020-09-25 12:25:48,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:48,840 INFO L93 Difference]: Finished difference Result 1021 states and 1258 transitions. [2020-09-25 12:25:48,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:25:48,840 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 165 [2020-09-25 12:25:48,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:48,844 INFO L225 Difference]: With dead ends: 1021 [2020-09-25 12:25:48,844 INFO L226 Difference]: Without dead ends: 496 [2020-09-25 12:25:48,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:25:48,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-09-25 12:25:48,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 486. [2020-09-25 12:25:48,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-09-25 12:25:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 544 transitions. [2020-09-25 12:25:48,866 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 544 transitions. Word has length 165 [2020-09-25 12:25:48,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:48,867 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 544 transitions. [2020-09-25 12:25:48,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 12:25:48,867 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 544 transitions. [2020-09-25 12:25:48,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 12:25:48,870 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:48,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:48,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:25:48,870 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:48,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:48,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1330770896, now seen corresponding path program 1 times [2020-09-25 12:25:48,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:48,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314218410] [2020-09-25 12:25:48,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:48,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:48,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:49,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:50,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:50,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:53,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:53,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 12:25:53,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:25:53,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 12:25:53,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:53,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:53,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:25:53,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:25:53,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 12:25:53,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:54,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:54,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:54,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:54,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:54,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:54,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 12:25:54,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:54,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:54,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:25:54,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:25:54,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:54,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:54,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:54,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:25:54,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:54,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 12:25:54,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:54,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:54,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:25:54,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:25:54,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:25:54,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:54,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314218410] [2020-09-25 12:25:54,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:54,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:25:54,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445893231] [2020-09-25 12:25:54,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:25:54,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:54,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:25:54,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:25:54,877 INFO L87 Difference]: Start difference. First operand 486 states and 544 transitions. Second operand 12 states. [2020-09-25 12:25:59,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:59,065 INFO L93 Difference]: Finished difference Result 1945 states and 2285 transitions. [2020-09-25 12:25:59,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 12:25:59,066 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 168 [2020-09-25 12:25:59,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:59,083 INFO L225 Difference]: With dead ends: 1945 [2020-09-25 12:25:59,083 INFO L226 Difference]: Without dead ends: 1378 [2020-09-25 12:25:59,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:25:59,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2020-09-25 12:25:59,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1331. [2020-09-25 12:25:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2020-09-25 12:25:59,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1504 transitions. [2020-09-25 12:25:59,154 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1504 transitions. Word has length 168 [2020-09-25 12:25:59,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:59,155 INFO L479 AbstractCegarLoop]: Abstraction has 1331 states and 1504 transitions. [2020-09-25 12:25:59,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:25:59,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1504 transitions. [2020-09-25 12:25:59,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 12:25:59,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:59,162 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:59,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:25:59,163 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:59,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:59,163 INFO L82 PathProgramCache]: Analyzing trace with hash 842097284, now seen corresponding path program 1 times [2020-09-25 12:25:59,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:59,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132564448] [2020-09-25 12:25:59,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:59,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:59,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:59,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:59,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:01,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:01,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:04,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:04,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 12:26:04,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:26:04,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 12:26:04,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:04,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:04,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:26:04,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 12:26:04,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 12:26:04,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:04,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:04,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:04,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:04,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:26:04,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:04,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:26:04,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:04,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:04,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:04,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:04,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:04,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:04,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:26:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:04,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:04,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:04,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:26:04,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:04,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:26:04,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:04,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:04,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:04,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:04,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:04,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:04,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 12:26:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:04,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:04,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:04,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:26:04,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:04,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 12:26:04,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:04,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:04,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:04,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:04,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:26:04,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 12:26:04,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132564448] [2020-09-25 12:26:04,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:04,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:26:04,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220006741] [2020-09-25 12:26:04,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:26:04,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:04,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:26:04,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:26:04,825 INFO L87 Difference]: Start difference. First operand 1331 states and 1504 transitions. Second operand 8 states. [2020-09-25 12:26:08,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:08,432 INFO L93 Difference]: Finished difference Result 4216 states and 4872 transitions. [2020-09-25 12:26:08,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:26:08,432 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 186 [2020-09-25 12:26:08,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:08,451 INFO L225 Difference]: With dead ends: 4216 [2020-09-25 12:26:08,451 INFO L226 Difference]: Without dead ends: 2984 [2020-09-25 12:26:08,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:26:08,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-09-25 12:26:08,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 2621. [2020-09-25 12:26:08,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2621 states. [2020-09-25 12:26:08,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2621 states to 2621 states and 2968 transitions. [2020-09-25 12:26:08,573 INFO L78 Accepts]: Start accepts. Automaton has 2621 states and 2968 transitions. Word has length 186 [2020-09-25 12:26:08,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:08,574 INFO L479 AbstractCegarLoop]: Abstraction has 2621 states and 2968 transitions. [2020-09-25 12:26:08,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:26:08,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2621 states and 2968 transitions. [2020-09-25 12:26:08,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 12:26:08,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:08,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:08,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:26:08,586 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:08,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:08,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1290658771, now seen corresponding path program 1 times [2020-09-25 12:26:08,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:08,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867053097] [2020-09-25 12:26:08,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:08,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:08,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:08,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking...