/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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 07:56:17,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:56:17,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:56:17,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:56:17,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:56:17,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:56:17,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:56:17,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:56:17,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:56:17,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:56:17,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:56:17,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:56:17,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:56:17,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:56:17,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:56:17,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:56:17,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:56:17,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:56:17,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:56:17,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:56:17,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:56:17,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:56:17,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:56:17,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:56:17,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:56:17,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:56:17,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:56:17,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:56:17,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:56:17,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:56:17,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:56:17,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:56:17,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:56:17,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:56:17,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:56:17,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:56:17,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:56:17,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:56:17,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:56:17,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:56:17,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:56:17,451 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 07:56:17,476 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:56:17,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:56:17,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:56:17,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:56:17,479 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:56:17,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:56:17,479 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:56:17,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:56:17,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:56:17,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:56:17,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:56:17,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:56:17,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:56:17,480 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:56:17,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:56:17,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:56:17,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:56:17,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:56:17,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:56:17,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:56:17,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:56:17,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:56:17,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:56:17,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:56:17,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:56:17,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:56:17,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:56:17,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:56:17,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:56:17,484 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:56:17,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:56:17,992 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:56:17,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:56:18,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:56:18,002 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:56:18,003 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-25 07:56:18,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b9c8df7e/3a0a48183e0b49c7b0c56d3f011ebfcd/FLAG8bd7533d3 [2020-09-25 07:56:18,757 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:56:18,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-25 07:56:18,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b9c8df7e/3a0a48183e0b49c7b0c56d3f011ebfcd/FLAG8bd7533d3 [2020-09-25 07:56:19,000 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b9c8df7e/3a0a48183e0b49c7b0c56d3f011ebfcd [2020-09-25 07:56:19,012 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:56:19,017 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:56:19,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:19,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:56:19,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:56:19,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:19" (1/1) ... [2020-09-25 07:56:19,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1987833a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19, skipping insertion in model container [2020-09-25 07:56:19,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:19" (1/1) ... [2020-09-25 07:56:19,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:56:19,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:56:19,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:19,670 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:56:19,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:19,884 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:56:19,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19 WrapperNode [2020-09-25 07:56:19,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:19,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:56:19,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:56:19,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:56:19,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19" (1/1) ... [2020-09-25 07:56:19,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19" (1/1) ... [2020-09-25 07:56:19,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19" (1/1) ... [2020-09-25 07:56:19,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19" (1/1) ... [2020-09-25 07:56:19,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19" (1/1) ... [2020-09-25 07:56:19,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19" (1/1) ... [2020-09-25 07:56:19,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19" (1/1) ... [2020-09-25 07:56:20,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:56:20,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:56:20,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:56:20,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:56:20,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19" (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 07:56:20,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:56:20,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:56:20,134 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:56:20,134 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:56:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:56:20,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:56:20,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:56:20,137 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:56:20,137 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:56:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:56:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:56:21,601 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:56:21,601 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:56:21,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:21 BoogieIcfgContainer [2020-09-25 07:56:21,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:56:21,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:56:21,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:56:21,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:56:21,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:56:19" (1/3) ... [2020-09-25 07:56:21,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9fbdfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:21, skipping insertion in model container [2020-09-25 07:56:21,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19" (2/3) ... [2020-09-25 07:56:21,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9fbdfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:21, skipping insertion in model container [2020-09-25 07:56:21,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:21" (3/3) ... [2020-09-25 07:56:21,631 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label21.c [2020-09-25 07:56:21,643 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:56:21,657 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:56:21,680 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:56:21,715 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:56:21,716 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:56:21,716 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:56:21,716 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:56:21,716 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:56:21,716 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:56:21,717 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:56:21,717 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:56:21,748 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:56:21,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 07:56:21,758 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:21,759 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 07:56:21,760 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:21,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:21,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1065442889, now seen corresponding path program 1 times [2020-09-25 07:56:21,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:21,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999709189] [2020-09-25 07:56:21,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:22,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:22,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:22,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:22,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 07:56:22,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:56:22,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 908 [2020-09-25 07:56:22,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:22,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:22,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:22,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:56:22,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 07:56:22,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:56:22,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:23,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:23,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:23,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:23,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:23,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 07:56:23,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:23,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:23,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:56:23,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:23,045 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 07:56:23,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999709189] [2020-09-25 07:56:23,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:23,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:56:23,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931053149] [2020-09-25 07:56:23,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:56:23,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:23,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:56:23,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:56:23,077 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 07:56:25,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:25,236 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 07:56:25,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:56:25,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 07:56:25,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:25,260 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 07:56:25,261 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 07:56:25,272 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 07:56:25,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 07:56:25,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 07:56:25,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 07:56:25,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 07:56:25,374 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 46 [2020-09-25 07:56:25,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:25,375 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 07:56:25,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:56:25,375 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 07:56:25,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 07:56:25,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:25,383 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 07:56:25,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:56:25,384 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:25,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:25,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1435399792, now seen corresponding path program 1 times [2020-09-25 07:56:25,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:25,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52078291] [2020-09-25 07:56:25,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:25,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:25,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:25,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:26,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:28,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:28,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:28,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:29,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:29,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:30,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:30,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 07:56:30,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:56:30,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 07:56:30,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:30,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:30,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:56:30,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 07:56:30,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:56:30,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:30,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:30,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:30,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:30,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:30,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 07:56:30,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:30,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:30,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:56:30,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:56:30,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:30,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:30,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:30,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:56:30,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:30,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-25 07:56:30,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:30,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:30,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:30,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:30,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 07:56:30,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:30,904 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 07:56:30,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52078291] [2020-09-25 07:56:30,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:30,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:56:30,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780277654] [2020-09-25 07:56:30,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:56:30,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:30,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:56:30,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:30,909 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 7 states. [2020-09-25 07:56:33,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:33,157 INFO L93 Difference]: Finished difference Result 1330 states and 1655 transitions. [2020-09-25 07:56:33,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 07:56:33,159 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-09-25 07:56:33,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:33,165 INFO L225 Difference]: With dead ends: 1330 [2020-09-25 07:56:33,165 INFO L226 Difference]: Without dead ends: 769 [2020-09-25 07:56:33,168 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 07:56:33,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-09-25 07:56:33,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 731. [2020-09-25 07:56:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-09-25 07:56:33,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 902 transitions. [2020-09-25 07:56:33,208 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 902 transitions. Word has length 129 [2020-09-25 07:56:33,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:33,208 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 902 transitions. [2020-09-25 07:56:33,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:56:33,209 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 902 transitions. [2020-09-25 07:56:33,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 07:56:33,212 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:33,212 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 07:56:33,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:56:33,213 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:33,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:33,213 INFO L82 PathProgramCache]: Analyzing trace with hash 677426997, now seen corresponding path program 1 times [2020-09-25 07:56:33,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:33,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173247751] [2020-09-25 07:56:33,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:33,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:33,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:33,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:34,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:34,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:34,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:34,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:35,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:35,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 07:56:35,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:56:35,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1957 [2020-09-25 07:56:35,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:35,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:35,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:35,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:56:35,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:56:35,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:35,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:35,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:35,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:35,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:35,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:35,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:56:35,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:35,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:35,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:35,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:35,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:56:35,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:35,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:35,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:35,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:35,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:56:35,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:35,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 07:56:35,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:35,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:35,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:35,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:35,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 07:56:35,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:35,526 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 07:56:35,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173247751] [2020-09-25 07:56:35,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:35,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:56:35,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517111335] [2020-09-25 07:56:35,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:56:35,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:35,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:56:35,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:35,530 INFO L87 Difference]: Start difference. First operand 731 states and 902 transitions. Second operand 7 states. [2020-09-25 07:56:37,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:37,873 INFO L93 Difference]: Finished difference Result 1822 states and 2354 transitions. [2020-09-25 07:56:37,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:56:37,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-09-25 07:56:37,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:37,887 INFO L225 Difference]: With dead ends: 1822 [2020-09-25 07:56:37,887 INFO L226 Difference]: Without dead ends: 1106 [2020-09-25 07:56:37,891 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 07:56:37,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2020-09-25 07:56:37,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1050. [2020-09-25 07:56:37,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-09-25 07:56:37,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1255 transitions. [2020-09-25 07:56:37,952 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1255 transitions. Word has length 129 [2020-09-25 07:56:37,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:37,953 INFO L479 AbstractCegarLoop]: Abstraction has 1050 states and 1255 transitions. [2020-09-25 07:56:37,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:56:37,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1255 transitions. [2020-09-25 07:56:37,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 07:56:37,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:37,965 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 07:56:37,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:56:37,965 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:37,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:37,965 INFO L82 PathProgramCache]: Analyzing trace with hash 2104953989, now seen corresponding path program 1 times [2020-09-25 07:56:37,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:37,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932780709] [2020-09-25 07:56:37,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:38,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:38,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:38,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:38,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:38,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:40,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:40,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:40,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:42,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:42,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 07:56:42,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:56:42,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4834 [2020-09-25 07:56:42,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:42,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:42,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:56:42,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:56:42,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:56:42,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:42,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:42,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:42,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:42,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:42,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:42,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:56:42,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:42,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:42,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:42,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:42,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:43,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:43,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:43,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:43,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:43,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 07:56:43,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:43,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:43,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:56:43,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:43,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:56:43,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:43,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932780709] [2020-09-25 07:56:43,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:43,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:56:43,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998508766] [2020-09-25 07:56:43,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:56:43,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:43,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:56:43,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:56:43,238 INFO L87 Difference]: Start difference. First operand 1050 states and 1255 transitions. Second operand 6 states. [2020-09-25 07:56:46,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:46,101 INFO L93 Difference]: Finished difference Result 2940 states and 3718 transitions. [2020-09-25 07:56:46,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:56:46,103 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-09-25 07:56:46,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:46,115 INFO L225 Difference]: With dead ends: 2940 [2020-09-25 07:56:46,116 INFO L226 Difference]: Without dead ends: 2055 [2020-09-25 07:56:46,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:56:46,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2020-09-25 07:56:46,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 1692. [2020-09-25 07:56:46,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1692 states. [2020-09-25 07:56:46,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2144 transitions. [2020-09-25 07:56:46,187 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2144 transitions. Word has length 135 [2020-09-25 07:56:46,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:46,188 INFO L479 AbstractCegarLoop]: Abstraction has 1692 states and 2144 transitions. [2020-09-25 07:56:46,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:56:46,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2144 transitions. [2020-09-25 07:56:46,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 07:56:46,191 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:46,191 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 07:56:46,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:56:46,192 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:46,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:46,192 INFO L82 PathProgramCache]: Analyzing trace with hash 124765503, now seen corresponding path program 1 times [2020-09-25 07:56:46,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:46,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876577724] [2020-09-25 07:56:46,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:46,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:46,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:46,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:46,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:47,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:47,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 07:56:47,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:56:47,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1380 [2020-09-25 07:56:47,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:47,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:56:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 07:56:47,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:47,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:47,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:47,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:47,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:47,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:47,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:56:47,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:47,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:47,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:47,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:47,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:56:47,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:47,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:47,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:47,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:47,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 07:56:47,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:47,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 07:56:47,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:47,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 07:56:47,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:48,036 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 07:56:48,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876577724] [2020-09-25 07:56:48,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:48,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:56:48,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807684054] [2020-09-25 07:56:48,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:56:48,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:48,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:56:48,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:48,045 INFO L87 Difference]: Start difference. First operand 1692 states and 2144 transitions. Second operand 7 states. [2020-09-25 07:56:50,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:50,695 INFO L93 Difference]: Finished difference Result 4515 states and 6995 transitions. [2020-09-25 07:56:50,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:56:50,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-09-25 07:56:50,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:50,736 INFO L225 Difference]: With dead ends: 4515 [2020-09-25 07:56:50,737 INFO L226 Difference]: Without dead ends: 2988 [2020-09-25 07:56:50,751 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 07:56:50,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2020-09-25 07:56:50,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 2646. [2020-09-25 07:56:50,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2646 states. [2020-09-25 07:56:50,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2646 states to 2646 states and 3483 transitions. [2020-09-25 07:56:50,906 INFO L78 Accepts]: Start accepts. Automaton has 2646 states and 3483 transitions. Word has length 151 [2020-09-25 07:56:50,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:50,906 INFO L479 AbstractCegarLoop]: Abstraction has 2646 states and 3483 transitions. [2020-09-25 07:56:50,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:56:50,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2646 states and 3483 transitions. [2020-09-25 07:56:50,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 07:56:50,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:50,912 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 07:56:50,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:56:50,912 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:50,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:50,912 INFO L82 PathProgramCache]: Analyzing trace with hash 841465058, now seen corresponding path program 1 times [2020-09-25 07:56:50,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:50,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609206627] [2020-09-25 07:56:50,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:50,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:51,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:51,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:51,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:53,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:53,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:53,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:54,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:54,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:55,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:55,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-09-25 07:56:55,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:56:55,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 07:56:55,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:55,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:55,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:55,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:56:55,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:56:55,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:56,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:56,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:56,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:56,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:56,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:56,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:56:56,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:56,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:56,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:56,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:56,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:56,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:56,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:56,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:56,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:56,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:56,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 07:56:56,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:56,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:56,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:56,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:56,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 07:56:56,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:56,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:56:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:56,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:56,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:56,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:56:56,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:56,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 07:56:56,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:56,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:56,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:56,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:56,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 07:56:56,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:56,681 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:56:56,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609206627] [2020-09-25 07:56:56,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:56,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:56:56,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988855846] [2020-09-25 07:56:56,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:56:56,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:56,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:56:56,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:56:56,684 INFO L87 Difference]: Start difference. First operand 2646 states and 3483 transitions. Second operand 9 states. [2020-09-25 07:57:00,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:00,847 INFO L93 Difference]: Finished difference Result 5810 states and 7655 transitions. [2020-09-25 07:57:00,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 07:57:00,851 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 218 [2020-09-25 07:57:00,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:00,867 INFO L225 Difference]: With dead ends: 5810 [2020-09-25 07:57:00,867 INFO L226 Difference]: Without dead ends: 3329 [2020-09-25 07:57:00,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-09-25 07:57:00,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3329 states. [2020-09-25 07:57:00,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3329 to 2808. [2020-09-25 07:57:00,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2808 states. [2020-09-25 07:57:00,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2808 states to 2808 states and 3683 transitions. [2020-09-25 07:57:00,957 INFO L78 Accepts]: Start accepts. Automaton has 2808 states and 3683 transitions. Word has length 218 [2020-09-25 07:57:00,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:00,958 INFO L479 AbstractCegarLoop]: Abstraction has 2808 states and 3683 transitions. [2020-09-25 07:57:00,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:57:00,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2808 states and 3683 transitions. [2020-09-25 07:57:00,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-25 07:57:00,963 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:00,963 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, 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 07:57:00,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:57:00,964 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:00,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:00,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1550966703, now seen corresponding path program 1 times [2020-09-25 07:57:00,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:00,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716272056] [2020-09-25 07:57:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:01,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:01,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:01,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:01,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:01,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:02,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:04,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:06,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:06,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-25 07:57:06,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:57:06,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 07:57:06,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:06,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:06,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:06,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 07:57:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:57:06,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:06,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:06,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:06,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:06,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:06,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:06,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:57:06,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:06,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:06,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:06,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:06,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:06,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:06,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:06,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:06,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 07:57:06,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:06,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:06,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:06,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:06,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 07:57:06,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:06,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:57:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:06,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:06,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:06,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 07:57:06,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:06,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 07:57:06,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:06,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:06,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 07:57:06,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:06,466 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:57:06,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716272056] [2020-09-25 07:57:06,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:06,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:57:06,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021509561] [2020-09-25 07:57:06,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:06,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:06,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:06,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:06,468 INFO L87 Difference]: Start difference. First operand 2808 states and 3683 transitions. Second operand 7 states.