/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:25:50,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:25:50,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:25:50,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:25:50,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:25:50,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:25:50,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:25:50,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:25:50,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:25:50,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:25:50,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:25:50,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:25:50,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:25:50,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:25:50,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:25:50,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:25:50,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:25:50,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:25:50,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:25:50,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:25:50,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:25:50,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:25:50,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:25:50,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:25:50,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:25:50,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:25:50,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:25:50,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:25:50,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:25:50,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:25:50,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:25:50,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:25:50,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:25:50,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:25:50,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:25:50,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:25:50,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:25:50,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:25:50,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:25:50,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:25:50,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:25:50,408 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 12:25:50,450 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:25:50,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:25:50,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:25:50,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:25:50,454 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:25:50,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:25:50,454 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:25:50,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:25:50,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:25:50,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:25:50,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:25:50,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:25:50,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:25:50,457 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:25:50,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:25:50,457 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:25:50,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:25:50,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:25:50,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:25:50,458 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:25:50,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:25:50,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:25:50,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:25:50,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:25:50,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:25:50,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:25:50,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:25:50,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:25:50,460 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:25:50,460 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 12:25:50,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:25:50,981 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:25:50,988 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:25:50,991 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:25:50,991 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:25:50,993 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-25 12:25:51,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53a2e8638/f2b7214433fc4fe7ae29e3f7056e1eee/FLAGeb65ca61f [2020-09-25 12:25:51,753 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:25:51,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-25 12:25:51,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53a2e8638/f2b7214433fc4fe7ae29e3f7056e1eee/FLAGeb65ca61f [2020-09-25 12:25:51,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53a2e8638/f2b7214433fc4fe7ae29e3f7056e1eee [2020-09-25 12:25:52,001 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:25:52,006 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:25:52,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:25:52,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:25:52,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:25:52,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:25:51" (1/1) ... [2020-09-25 12:25:52,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44fd9ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:52, skipping insertion in model container [2020-09-25 12:25:52,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:25:51" (1/1) ... [2020-09-25 12:25:52,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:25:52,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:25:52,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:25:52,587 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:25:52,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:25:52,853 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:25:52,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:52 WrapperNode [2020-09-25 12:25:52,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:25:52,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:25:52,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:25:52,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:25:52,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:52" (1/1) ... [2020-09-25 12:25:52,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:52" (1/1) ... [2020-09-25 12:25:52,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:52" (1/1) ... [2020-09-25 12:25:52,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:52" (1/1) ... [2020-09-25 12:25:52,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:52" (1/1) ... [2020-09-25 12:25:52,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:52" (1/1) ... [2020-09-25 12:25:52,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:52" (1/1) ... [2020-09-25 12:25:52,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:25:52,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:25:52,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:25:52,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:25:52,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:52" (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 12:25:53,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:25:53,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:25:53,059 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:25:53,059 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:25:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:25:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:25:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:25:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:25:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:25:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:25:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:25:54,575 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:25:54,575 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:25:54,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:54 BoogieIcfgContainer [2020-09-25 12:25:54,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:25:54,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:25:54,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:25:54,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:25:54,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:25:51" (1/3) ... [2020-09-25 12:25:54,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591c2c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:54, skipping insertion in model container [2020-09-25 12:25:54,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:52" (2/3) ... [2020-09-25 12:25:54,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591c2c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:54, skipping insertion in model container [2020-09-25 12:25:54,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:54" (3/3) ... [2020-09-25 12:25:54,595 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label04.c [2020-09-25 12:25:54,607 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:25:54,620 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:25:54,643 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:25:54,678 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:25:54,679 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:25:54,679 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:25:54,679 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:25:54,679 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:25:54,679 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:25:54,680 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:25:54,680 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:25:54,711 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:25:54,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 12:25:54,724 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:54,726 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] [2020-09-25 12:25:54,726 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:54,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:54,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1435975873, now seen corresponding path program 1 times [2020-09-25 12:25:54,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:54,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028892150] [2020-09-25 12:25:54,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:55,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:55,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:55,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:55,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 12:25:55,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:25:55,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 701 [2020-09-25 12:25:55,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:55,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:55,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:25:55,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:25:55,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 12:25:55,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:25:55,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:55,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:55,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:55,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:25:55,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:55,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:25:55,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:55,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:55,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:55,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:25:55,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:55,946 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 12:25:55,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028892150] [2020-09-25 12:25:55,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:25:55,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:25:55,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509455037] [2020-09-25 12:25:55,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:25:55,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:55,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:25:55,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:25:55,989 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:25:57,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:57,925 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 12:25:57,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:25:57,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-09-25 12:25:57,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:57,954 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 12:25:57,955 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 12:25:57,965 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 12:25:57,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 12:25:58,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 12:25:58,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 12:25:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 12:25:58,065 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 85 [2020-09-25 12:25:58,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:58,066 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 12:25:58,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:25:58,067 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 12:25:58,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 12:25:58,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:58,078 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:25:58,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:25:58,078 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:58,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:58,079 INFO L82 PathProgramCache]: Analyzing trace with hash -2117933451, now seen corresponding path program 1 times [2020-09-25 12:25:58,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:58,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195954149] [2020-09-25 12:25:58,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:58,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:58,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:58,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:58,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:00,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:00,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:00,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 12:26:00,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:00,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2404 [2020-09-25 12:26:00,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:00,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:00,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:26:00,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:26:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-25 12:26:00,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:26:00,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:00,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:00,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:00,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:00,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:00,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 12:26:00,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:00,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:00,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:00,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:00,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:26:00,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:26:00,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:00,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:00,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:00,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:00,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:26:00,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:00,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 12:26:00,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:00,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:00,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:00,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:00,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 12:26:00,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:26:01,107 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:26:01,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195954149] [2020-09-25 12:26:01,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:01,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:26:01,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678268511] [2020-09-25 12:26:01,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:26:01,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:01,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:26:01,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:26:01,112 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 8 states. [2020-09-25 12:26:04,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:04,212 INFO L93 Difference]: Finished difference Result 1743 states and 2321 transitions. [2020-09-25 12:26:04,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:26:04,213 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 12:26:04,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:04,222 INFO L225 Difference]: With dead ends: 1743 [2020-09-25 12:26:04,222 INFO L226 Difference]: Without dead ends: 1215 [2020-09-25 12:26:04,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:26:04,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2020-09-25 12:26:04,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1171. [2020-09-25 12:26:04,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1171 states. [2020-09-25 12:26:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1461 transitions. [2020-09-25 12:26:04,300 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1461 transitions. Word has length 165 [2020-09-25 12:26:04,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:04,301 INFO L479 AbstractCegarLoop]: Abstraction has 1171 states and 1461 transitions. [2020-09-25 12:26:04,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:26:04,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1461 transitions. [2020-09-25 12:26:04,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 12:26:04,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:04,311 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:26:04,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:26:04,311 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:04,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:04,312 INFO L82 PathProgramCache]: Analyzing trace with hash 185368306, now seen corresponding path program 1 times [2020-09-25 12:26:04,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:04,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138211439] [2020-09-25 12:26:04,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:04,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:04,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:04,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:04,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:06,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:06,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:06,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:09,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:09,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 12:26:09,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:26:09,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 12:26:09,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:09,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:09,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:26:09,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:09,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-09-25 12:26:09,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:09,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:09,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:09,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:09,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:09,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:09,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:26:09,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:09,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:09,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:09,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:09,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:09,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:09,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:09,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:26:09,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:09,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 12:26:09,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:09,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:09,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:09,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:09,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:26:09,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:09,832 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:09,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138211439] [2020-09-25 12:26:09,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:09,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:26:09,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079494486] [2020-09-25 12:26:09,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:26:09,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:09,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:26:09,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:26:09,835 INFO L87 Difference]: Start difference. First operand 1171 states and 1461 transitions. Second operand 8 states. [2020-09-25 12:26:13,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:13,116 INFO L93 Difference]: Finished difference Result 3330 states and 4274 transitions. [2020-09-25 12:26:13,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:26:13,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 174 [2020-09-25 12:26:13,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:13,141 INFO L225 Difference]: With dead ends: 3330 [2020-09-25 12:26:13,142 INFO L226 Difference]: Without dead ends: 2174 [2020-09-25 12:26:13,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:26:13,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2020-09-25 12:26:13,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 2136. [2020-09-25 12:26:13,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-09-25 12:26:13,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 2612 transitions. [2020-09-25 12:26:13,249 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 2612 transitions. Word has length 174 [2020-09-25 12:26:13,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:13,253 INFO L479 AbstractCegarLoop]: Abstraction has 2136 states and 2612 transitions. [2020-09-25 12:26:13,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:26:13,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 2612 transitions. [2020-09-25 12:26:13,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 12:26:13,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:13,268 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:13,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:26:13,269 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:13,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:13,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1609125249, now seen corresponding path program 1 times [2020-09-25 12:26:13,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:13,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298610810] [2020-09-25 12:26:13,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:13,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:13,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:13,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:13,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:17,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:17,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:18,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 12:26:18,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:26:18,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 12:26:18,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:18,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:18,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:26:18,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:18,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 12:26:18,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:18,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:18,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:18,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:18,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:18,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:26:18,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:18,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:18,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:18,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:18,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:18,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:18,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:18,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:18,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:26:18,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:18,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 12:26:18,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:18,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:18,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:18,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:18,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:26:18,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:18,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:26:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:18,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:18,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:26:18,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:18,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 12:26:18,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:18,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:26:18,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 148 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:26:19,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298610810] [2020-09-25 12:26:19,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:19,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:26:19,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264178978] [2020-09-25 12:26:19,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:26:19,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:19,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:26:19,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:26:19,089 INFO L87 Difference]: Start difference. First operand 2136 states and 2612 transitions. Second operand 10 states. [2020-09-25 12:26:23,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:23,742 INFO L93 Difference]: Finished difference Result 5028 states and 6663 transitions. [2020-09-25 12:26:23,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 12:26:23,743 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 253 [2020-09-25 12:26:23,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:23,766 INFO L225 Difference]: With dead ends: 5028 [2020-09-25 12:26:23,766 INFO L226 Difference]: Without dead ends: 3850 [2020-09-25 12:26:23,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:26:23,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3850 states. [2020-09-25 12:26:23,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3850 to 3447. [2020-09-25 12:26:23,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3447 states. [2020-09-25 12:26:23,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 4364 transitions. [2020-09-25 12:26:23,891 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 4364 transitions. Word has length 253 [2020-09-25 12:26:23,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:23,892 INFO L479 AbstractCegarLoop]: Abstraction has 3447 states and 4364 transitions. [2020-09-25 12:26:23,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:26:23,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 4364 transitions. [2020-09-25 12:26:23,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-09-25 12:26:23,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:23,904 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:23,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:26:23,905 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:23,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:23,905 INFO L82 PathProgramCache]: Analyzing trace with hash -2077380539, now seen corresponding path program 1 times [2020-09-25 12:26:23,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:23,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199611190] [2020-09-25 12:26:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:24,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:24,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:24,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:24,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:25,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:25,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:25,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:28,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:28,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-09-25 12:26:28,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:26:28,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 12:26:28,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:28,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:28,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:26:28,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:26:28,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-09-25 12:26:28,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:29,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:29,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:29,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:29,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:29,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:29,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:26:29,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:29,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:29,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:26:29,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:29,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:26:29,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:29,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:29,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:29,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:29,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:29,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:26:29,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:29,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 12:26:29,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:29,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:29,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:29,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:29,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:26:29,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:29,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 12:26:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:29,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:29,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:29,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:29,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 12:26:29,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:29,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-09-25 12:26:29,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:29,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:29,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:26:29,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:30,203 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 139 proven. 4 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-25 12:26:30,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199611190] [2020-09-25 12:26:30,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:30,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:26:30,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517645882] [2020-09-25 12:26:30,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:26:30,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:30,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:26:30,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:26:30,207 INFO L87 Difference]: Start difference. First operand 3447 states and 4364 transitions. Second operand 10 states. [2020-09-25 12:26:34,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:34,017 INFO L93 Difference]: Finished difference Result 6910 states and 9028 transitions. [2020-09-25 12:26:34,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:26:34,019 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 266 [2020-09-25 12:26:34,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:34,042 INFO L225 Difference]: With dead ends: 6910 [2020-09-25 12:26:34,043 INFO L226 Difference]: Without dead ends: 4397 [2020-09-25 12:26:34,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:26:34,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4397 states. [2020-09-25 12:26:34,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4397 to 4356. [2020-09-25 12:26:34,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4356 states. [2020-09-25 12:26:34,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4356 states to 4356 states and 5449 transitions. [2020-09-25 12:26:34,170 INFO L78 Accepts]: Start accepts. Automaton has 4356 states and 5449 transitions. Word has length 266 [2020-09-25 12:26:34,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:34,170 INFO L479 AbstractCegarLoop]: Abstraction has 4356 states and 5449 transitions. [2020-09-25 12:26:34,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:26:34,171 INFO L276 IsEmpty]: Start isEmpty. Operand 4356 states and 5449 transitions. [2020-09-25 12:26:34,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-25 12:26:34,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:34,179 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:34,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:26:34,179 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:34,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:34,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1537763131, now seen corresponding path program 1 times [2020-09-25 12:26:34,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:34,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392582829] [2020-09-25 12:26:34,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:34,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:34,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:34,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:34,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:35,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking...