/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=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:41:53,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:41:53,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:41:53,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:41:53,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:41:53,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:41:53,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:41:53,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:41:53,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:41:53,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:41:53,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:41:53,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:41:53,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:41:53,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:41:53,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:41:53,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:41:53,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:41:53,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:41:53,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:41:53,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:41:53,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:41:53,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:41:53,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:41:53,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:41:53,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:41:53,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:41:53,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:41:53,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:41:53,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:41:53,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:41:53,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:41:53,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:41:53,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:41:53,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:41:53,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:41:53,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:41:53,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:41:53,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:41:53,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:41:53,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:41:53,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:41:53,758 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 14:41:53,804 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:41:53,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:41:53,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:41:53,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:41:53,808 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:41:53,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:41:53,809 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:41:53,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:41:53,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:41:53,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:41:53,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:41:53,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:41:53,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:41:53,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:41:53,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:41:53,812 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:41:53,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:41:53,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:41:53,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:41:53,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:41:53,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:41:53,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:41:53,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:41:53,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:41:53,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:41:53,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:41:53,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:41:53,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:41:53,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:41:53,814 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:41:54,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:41:54,313 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:41:54,317 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:41:54,319 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:41:54,320 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:41:54,321 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-25 14:41:54,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfd5b06e0/c4bb3b5389b64a54971335c2ae3cb59b/FLAG61ed0e9dc [2020-09-25 14:41:55,048 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:41:55,049 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-25 14:41:55,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfd5b06e0/c4bb3b5389b64a54971335c2ae3cb59b/FLAG61ed0e9dc [2020-09-25 14:41:55,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfd5b06e0/c4bb3b5389b64a54971335c2ae3cb59b [2020-09-25 14:41:55,348 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:41:55,357 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:41:55,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:55,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:41:55,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:41:55,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:55" (1/1) ... [2020-09-25 14:41:55,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e48a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:55, skipping insertion in model container [2020-09-25 14:41:55,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:55" (1/1) ... [2020-09-25 14:41:55,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:41:55,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:41:56,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:56,118 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:41:56,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:56,291 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:41:56,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:56 WrapperNode [2020-09-25 14:41:56,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:56,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:41:56,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:41:56,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:41:56,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:56" (1/1) ... [2020-09-25 14:41:56,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:56" (1/1) ... [2020-09-25 14:41:56,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:56" (1/1) ... [2020-09-25 14:41:56,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:56" (1/1) ... [2020-09-25 14:41:56,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:56" (1/1) ... [2020-09-25 14:41:56,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:56" (1/1) ... [2020-09-25 14:41:56,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:56" (1/1) ... [2020-09-25 14:41:56,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:41:56,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:41:56,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:41:56,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:41:56,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:56" (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 14:41:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:41:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:41:56,531 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:41:56,531 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:41:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:41:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:41:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:41:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:41:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:41:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:41:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:41:57,994 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:41:57,994 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:41:58,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:58 BoogieIcfgContainer [2020-09-25 14:41:58,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:41:58,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:41:58,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:41:58,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:41:58,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:41:55" (1/3) ... [2020-09-25 14:41:58,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7831ef4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:58, skipping insertion in model container [2020-09-25 14:41:58,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:56" (2/3) ... [2020-09-25 14:41:58,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7831ef4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:58, skipping insertion in model container [2020-09-25 14:41:58,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:58" (3/3) ... [2020-09-25 14:41:58,024 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label21.c [2020-09-25 14:41:58,037 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:41:58,053 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:41:58,075 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:41:58,117 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:41:58,118 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:41:58,118 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:41:58,118 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:41:58,119 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:41:58,119 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:41:58,119 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:41:58,119 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:41:58,151 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:41:58,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 14:41:58,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:58,162 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] [2020-09-25 14:41:58,162 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:58,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:58,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1065442889, now seen corresponding path program 1 times [2020-09-25 14:41:58,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:58,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243713405] [2020-09-25 14:41:58,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:58,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:58,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:59,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:59,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 14:41:59,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:59,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 938 [2020-09-25 14:41:59,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:59,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:59,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:59,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:41:59,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 14:41:59,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:41:59,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:59,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:59,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:59,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:59,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:59,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:41:59,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:59,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:59,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:59,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:59,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:41:59,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:59,465 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 14:41:59,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243713405] [2020-09-25 14:41:59,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:59,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:41:59,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670415353] [2020-09-25 14:41:59,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:41:59,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:59,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:41:59,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:41:59,498 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:42:01,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:01,698 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 14:42:01,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:42:01,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 14:42:01,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:01,724 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 14:42:01,724 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 14:42:01,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:42:01,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 14:42:01,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 14:42:01,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 14:42:01,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 14:42:01,842 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 46 [2020-09-25 14:42:01,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:01,843 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 14:42:01,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:42:01,844 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 14:42:01,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 14:42:01,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:01,852 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:01,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:42:01,853 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:01,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:01,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1435399792, now seen corresponding path program 1 times [2020-09-25 14:42:01,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:01,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550235728] [2020-09-25 14:42:01,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:01,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:02,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:02,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:02,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:04,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:04,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:04,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:05,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:05,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:06,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:06,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 14:42:06,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:42:06,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:42:06,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:06,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:42:06,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 14:42:06,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:42:06,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:06,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:06,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:06,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:06,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:06,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:42:06,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:06,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:06,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:06,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:06,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:42:06,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:07,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:07,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:07,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:07,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:42:07,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:07,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-25 14:42:07,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:07,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:07,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:07,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:07,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:42:07,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:07,361 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:07,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550235728] [2020-09-25 14:42:07,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:07,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:42:07,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111416489] [2020-09-25 14:42:07,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:07,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:07,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:07,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:07,368 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 7 states. [2020-09-25 14:42:09,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:09,573 INFO L93 Difference]: Finished difference Result 1330 states and 1655 transitions. [2020-09-25 14:42:09,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:42:09,574 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-09-25 14:42:09,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:09,580 INFO L225 Difference]: With dead ends: 1330 [2020-09-25 14:42:09,581 INFO L226 Difference]: Without dead ends: 769 [2020-09-25 14:42:09,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:42:09,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-09-25 14:42:09,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 731. [2020-09-25 14:42:09,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-09-25 14:42:09,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 902 transitions. [2020-09-25 14:42:09,625 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 902 transitions. Word has length 129 [2020-09-25 14:42:09,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:09,626 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 902 transitions. [2020-09-25 14:42:09,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:09,626 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 902 transitions. [2020-09-25 14:42:09,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 14:42:09,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:09,633 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:09,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:42:09,634 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:09,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:09,634 INFO L82 PathProgramCache]: Analyzing trace with hash 677426997, now seen corresponding path program 1 times [2020-09-25 14:42:09,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:09,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359155787] [2020-09-25 14:42:09,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:09,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:09,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:10,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:10,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:10,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:10,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:11,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:11,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:11,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 14:42:11,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:42:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2140 [2020-09-25 14:42:11,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:11,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:11,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:11,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:42:11,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:42:11,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:11,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:11,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:11,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:11,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:11,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:11,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:42:11,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:11,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:11,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:11,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:11,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:42:11,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:11,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:11,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:12,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:12,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:42:12,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:12,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 14:42:12,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:12,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:12,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:12,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:12,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:42:12,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:12,152 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:12,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359155787] [2020-09-25 14:42:12,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:12,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:42:12,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918294682] [2020-09-25 14:42:12,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:12,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:12,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:12,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:12,157 INFO L87 Difference]: Start difference. First operand 731 states and 902 transitions. Second operand 7 states. [2020-09-25 14:42:14,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:14,550 INFO L93 Difference]: Finished difference Result 1822 states and 2354 transitions. [2020-09-25 14:42:14,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:42:14,551 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-09-25 14:42:14,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:14,558 INFO L225 Difference]: With dead ends: 1822 [2020-09-25 14:42:14,559 INFO L226 Difference]: Without dead ends: 1106 [2020-09-25 14:42:14,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:42:14,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2020-09-25 14:42:14,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1050. [2020-09-25 14:42:14,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-09-25 14:42:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1255 transitions. [2020-09-25 14:42:14,604 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1255 transitions. Word has length 129 [2020-09-25 14:42:14,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:14,605 INFO L479 AbstractCegarLoop]: Abstraction has 1050 states and 1255 transitions. [2020-09-25 14:42:14,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:14,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1255 transitions. [2020-09-25 14:42:14,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 14:42:14,608 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:14,609 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:14,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:42:14,609 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:14,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:14,610 INFO L82 PathProgramCache]: Analyzing trace with hash 2104953989, now seen corresponding path program 1 times [2020-09-25 14:42:14,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:14,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538369570] [2020-09-25 14:42:14,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:14,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:14,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:14,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:14,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:15,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:16,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:16,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:17,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:19,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:19,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 14:42:19,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:42:19,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4960 [2020-09-25 14:42:19,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:19,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:19,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:42:19,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:42:19,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 14:42:19,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:19,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:19,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:19,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:19,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:19,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:19,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:42:19,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:19,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:19,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:19,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:19,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:42:19,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:19,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:19,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:19,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:19,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:19,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:19,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 14:42:19,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:19,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:19,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:19,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:19,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:42:19,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:42:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:19,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538369570] [2020-09-25 14:42:19,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:19,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:42:19,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955810137] [2020-09-25 14:42:19,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:42:19,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:19,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:42:19,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:42:19,955 INFO L87 Difference]: Start difference. First operand 1050 states and 1255 transitions. Second operand 8 states. [2020-09-25 14:42:23,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:23,291 INFO L93 Difference]: Finished difference Result 2377 states and 2950 transitions. [2020-09-25 14:42:23,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:42:23,292 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 135 [2020-09-25 14:42:23,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:23,307 INFO L225 Difference]: With dead ends: 2377 [2020-09-25 14:42:23,307 INFO L226 Difference]: Without dead ends: 1492 [2020-09-25 14:42:23,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:42:23,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2020-09-25 14:42:23,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1402. [2020-09-25 14:42:23,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1402 states. [2020-09-25 14:42:23,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 1661 transitions. [2020-09-25 14:42:23,363 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 1661 transitions. Word has length 135 [2020-09-25 14:42:23,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:23,364 INFO L479 AbstractCegarLoop]: Abstraction has 1402 states and 1661 transitions. [2020-09-25 14:42:23,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:42:23,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 1661 transitions. [2020-09-25 14:42:23,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 14:42:23,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:23,367 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:23,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:42:23,368 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:23,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:23,368 INFO L82 PathProgramCache]: Analyzing trace with hash 124765503, now seen corresponding path program 1 times [2020-09-25 14:42:23,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:23,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35072777] [2020-09-25 14:42:23,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:23,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:23,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:23,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:23,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:24,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:24,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 14:42:24,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:42:24,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1475 [2020-09-25 14:42:24,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:24,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:24,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:42:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 14:42:24,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:24,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:24,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:24,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:24,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:24,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:24,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:42:24,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:24,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:24,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:24,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:24,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:42:24,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:24,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:24,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:25,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:25,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 14:42:25,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:25,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 14:42:25,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:25,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:25,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:25,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:25,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 14:42:25,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:25,257 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:25,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35072777] [2020-09-25 14:42:25,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:25,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:42:25,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108228204] [2020-09-25 14:42:25,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:25,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:25,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:25,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:25,270 INFO L87 Difference]: Start difference. First operand 1402 states and 1661 transitions. Second operand 7 states. [2020-09-25 14:42:27,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:27,954 INFO L93 Difference]: Finished difference Result 3521 states and 4840 transitions. [2020-09-25 14:42:27,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:42:27,955 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-09-25 14:42:27,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:27,976 INFO L225 Difference]: With dead ends: 3521 [2020-09-25 14:42:27,976 INFO L226 Difference]: Without dead ends: 2300 [2020-09-25 14:42:27,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:42:27,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2020-09-25 14:42:28,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 2040. [2020-09-25 14:42:28,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2040 states. [2020-09-25 14:42:28,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 2489 transitions. [2020-09-25 14:42:28,068 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 2489 transitions. Word has length 151 [2020-09-25 14:42:28,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:28,068 INFO L479 AbstractCegarLoop]: Abstraction has 2040 states and 2489 transitions. [2020-09-25 14:42:28,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:28,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 2489 transitions. [2020-09-25 14:42:28,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 14:42:28,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:28,073 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:42:28,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:42:28,073 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:28,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:28,074 INFO L82 PathProgramCache]: Analyzing trace with hash 392819605, now seen corresponding path program 1 times [2020-09-25 14:42:28,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:28,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137305691] [2020-09-25 14:42:28,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:28,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:28,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:28,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:29,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:29,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:29,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:30,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:30,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:31,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:33,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:33,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-25 14:42:33,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:42:33,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 14:42:33,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:33,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:33,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:42:33,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 14:42:33,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 14:42:33,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:33,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:33,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:33,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:33,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:33,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:33,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:42:33,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:33,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:33,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:33,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:33,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:33,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:42:33,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:33,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:33,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:33,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:33,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:33,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 14:42:33,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:33,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:33,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:42:33,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:33,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 14:42:33,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:33,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:42:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:33,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:33,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:33,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:33,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:33,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:33,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 14:42:33,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:33,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:33,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:42:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:42:33,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:33,709 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 14:42:33,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137305691] [2020-09-25 14:42:33,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:33,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:42:33,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394350573] [2020-09-25 14:42:33,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:42:33,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:33,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:42:33,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:42:33,712 INFO L87 Difference]: Start difference. First operand 2040 states and 2489 transitions. Second operand 8 states. [2020-09-25 14:42:37,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:37,377 INFO L93 Difference]: Finished difference Result 5371 states and 7035 transitions. [2020-09-25 14:42:37,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:42:37,379 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 214 [2020-09-25 14:42:37,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:37,399 INFO L225 Difference]: With dead ends: 5371 [2020-09-25 14:42:37,399 INFO L226 Difference]: Without dead ends: 3988 [2020-09-25 14:42:37,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:42:37,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3988 states. [2020-09-25 14:42:37,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3988 to 3142. [2020-09-25 14:42:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3142 states. [2020-09-25 14:42:37,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4151 transitions. [2020-09-25 14:42:37,511 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4151 transitions. Word has length 214 [2020-09-25 14:42:37,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:37,511 INFO L479 AbstractCegarLoop]: Abstraction has 3142 states and 4151 transitions. [2020-09-25 14:42:37,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:42:37,511 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4151 transitions. [2020-09-25 14:42:37,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 14:42:37,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:37,516 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:42:37,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:42:37,517 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:37,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:37,517 INFO L82 PathProgramCache]: Analyzing trace with hash 841465058, now seen corresponding path program 1 times [2020-09-25 14:42:37,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:37,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804819073] [2020-09-25 14:42:37,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:37,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:37,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:37,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:38,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:40,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:40,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:40,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:41,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:41,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking...