/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=0.4 --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/Problem14_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:40:12,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:40:12,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:40:12,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:40:12,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:40:12,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:40:12,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:40:12,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:40:12,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:40:12,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:40:12,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:40:12,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:40:12,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:40:12,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:40:12,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:40:12,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:40:12,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:40:12,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:40:12,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:40:12,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:40:12,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:40:12,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:40:12,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:40:12,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:40:12,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:40:12,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:40:12,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:40:12,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:40:12,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:40:12,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:40:12,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:40:12,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:40:12,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:40:12,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:40:12,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:40:12,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:40:12,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:40:12,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:40:12,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:40:12,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:40:12,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:40:12,838 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 05:40:12,891 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:40:12,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:40:12,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:40:12,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:40:12,899 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:40:12,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:40:12,899 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:40:12,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:40:12,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:40:12,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:40:12,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:40:12,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:40:12,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:40:12,902 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:40:12,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:40:12,902 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:40:12,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:40:12,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:40:12,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:40:12,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:40:12,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:40:12,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:40:12,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:40:12,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:40:12,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:40:12,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:40:12,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:40:12,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:40:12,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:40:12,908 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:40:13,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:40:13,455 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:40:13,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:40:13,462 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:40:13,464 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:40:13,465 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-25 05:40:13,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da80fecfa/528bda957f3e4580830d79d32c7171d4/FLAG61c4798b6 [2020-09-25 05:40:14,189 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:40:14,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-25 05:40:14,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da80fecfa/528bda957f3e4580830d79d32c7171d4/FLAG61c4798b6 [2020-09-25 05:40:14,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da80fecfa/528bda957f3e4580830d79d32c7171d4 [2020-09-25 05:40:14,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:40:14,446 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:40:14,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:40:14,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:40:14,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:40:14,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:40:14" (1/1) ... [2020-09-25 05:40:14,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbac012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:14, skipping insertion in model container [2020-09-25 05:40:14,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:40:14" (1/1) ... [2020-09-25 05:40:14,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:40:14,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:40:15,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:40:15,176 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:40:15,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:40:15,439 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:40:15,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:15 WrapperNode [2020-09-25 05:40:15,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:40:15,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:40:15,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:40:15,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:40:15,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:15" (1/1) ... [2020-09-25 05:40:15,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:15" (1/1) ... [2020-09-25 05:40:15,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:15" (1/1) ... [2020-09-25 05:40:15,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:15" (1/1) ... [2020-09-25 05:40:15,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:15" (1/1) ... [2020-09-25 05:40:15,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:15" (1/1) ... [2020-09-25 05:40:15,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:15" (1/1) ... [2020-09-25 05:40:15,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:40:15,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:40:15,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:40:15,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:40:15,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:15" (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 05:40:15,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:40:15,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:40:15,753 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:40:15,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:40:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:40:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:40:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:40:15,756 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:40:15,756 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:40:15,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:40:15,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:40:17,633 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:40:17,634 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:40:17,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:40:17 BoogieIcfgContainer [2020-09-25 05:40:17,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:40:17,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:40:17,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:40:17,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:40:17,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:40:14" (1/3) ... [2020-09-25 05:40:17,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45dec0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:40:17, skipping insertion in model container [2020-09-25 05:40:17,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:15" (2/3) ... [2020-09-25 05:40:17,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45dec0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:40:17, skipping insertion in model container [2020-09-25 05:40:17,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:40:17" (3/3) ... [2020-09-25 05:40:17,656 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label38.c [2020-09-25 05:40:17,669 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:40:17,681 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:40:17,708 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:40:17,752 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:40:17,753 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:40:17,753 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:40:17,754 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:40:17,754 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:40:17,754 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:40:17,754 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:40:17,754 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:40:17,802 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 05:40:17,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 05:40:17,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:17,824 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] [2020-09-25 05:40:17,825 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:17,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:17,833 INFO L82 PathProgramCache]: Analyzing trace with hash -496136462, now seen corresponding path program 1 times [2020-09-25 05:40:17,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:17,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836172546] [2020-09-25 05:40:17,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:18,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:19,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:19,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:40:19,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:40:19,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1074 [2020-09-25 05:40:19,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:19,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:19,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:40:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:40:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:40:19,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:40:19,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:19,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:19,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:19,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:19,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:19,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 05:40:19,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:19,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:19,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:19,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:19,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:40:19,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:40:19,405 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 05:40:19,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836172546] [2020-09-25 05:40:19,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:40:19,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:40:19,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858133029] [2020-09-25 05:40:19,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:19,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:19,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:19,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:19,444 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-25 05:40:23,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:23,746 INFO L93 Difference]: Finished difference Result 1991 states and 2714 transitions. [2020-09-25 05:40:23,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:40:23,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-25 05:40:23,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:23,783 INFO L225 Difference]: With dead ends: 1991 [2020-09-25 05:40:23,784 INFO L226 Difference]: Without dead ends: 1250 [2020-09-25 05:40:23,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:40:23,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-09-25 05:40:23,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 997. [2020-09-25 05:40:23,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 05:40:23,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1236 transitions. [2020-09-25 05:40:23,954 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1236 transitions. Word has length 69 [2020-09-25 05:40:23,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:23,955 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1236 transitions. [2020-09-25 05:40:23,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:23,956 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1236 transitions. [2020-09-25 05:40:23,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 05:40:23,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:23,966 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:23,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:40:23,967 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:23,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:23,968 INFO L82 PathProgramCache]: Analyzing trace with hash -112077510, now seen corresponding path program 1 times [2020-09-25 05:40:23,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:23,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525581663] [2020-09-25 05:40:23,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:24,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:24,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:24,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:24,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:24,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:25,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:25,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:28,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:28,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 05:40:28,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:40:28,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4267 [2020-09-25 05:40:28,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:28,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 05:40:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 05:40:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:28,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:28,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:28,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:28,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:28,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:28,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:40:28,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:28,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:28,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:28,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:28,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:28,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:28,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:28,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:28,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:28,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 05:40:28,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:28,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 05:40:28,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:28,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:28,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:28,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:28,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 05:40:28,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:28,615 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:28,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525581663] [2020-09-25 05:40:28,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:28,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:40:28,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746613453] [2020-09-25 05:40:28,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:40:28,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:28,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:40:28,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:40:28,621 INFO L87 Difference]: Start difference. First operand 997 states and 1236 transitions. Second operand 6 states. [2020-09-25 05:40:32,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:32,399 INFO L93 Difference]: Finished difference Result 2974 states and 3934 transitions. [2020-09-25 05:40:32,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:40:32,400 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2020-09-25 05:40:32,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:32,417 INFO L225 Difference]: With dead ends: 2974 [2020-09-25 05:40:32,418 INFO L226 Difference]: Without dead ends: 1992 [2020-09-25 05:40:32,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 05:40:32,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2020-09-25 05:40:32,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1763. [2020-09-25 05:40:32,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2020-09-25 05:40:32,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2281 transitions. [2020-09-25 05:40:32,520 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2281 transitions. Word has length 156 [2020-09-25 05:40:32,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:32,525 INFO L479 AbstractCegarLoop]: Abstraction has 1763 states and 2281 transitions. [2020-09-25 05:40:32,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:40:32,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2281 transitions. [2020-09-25 05:40:32,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 05:40:32,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:32,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:32,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:40:32,539 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:32,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:32,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1811384198, now seen corresponding path program 1 times [2020-09-25 05:40:32,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:32,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687500462] [2020-09-25 05:40:32,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:32,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:32,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:33,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:35,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:35,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:37,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:37,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 05:40:37,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:40:37,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:40:37,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:37,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:40:37,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-09-25 05:40:37,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:40:37,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:37,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:37,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:37,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:37,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:37,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:37,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:40:37,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:37,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:37,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:37,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:37,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:37,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:37,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:37,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:37,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:37,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 05:40:37,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:37,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 05:40:37,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:37,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:37,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:40:37,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:37,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 05:40:37,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:38,052 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:38,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687500462] [2020-09-25 05:40:38,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:38,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:40:38,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940248775] [2020-09-25 05:40:38,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:40:38,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:38,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:40:38,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:40:38,055 INFO L87 Difference]: Start difference. First operand 1763 states and 2281 transitions. Second operand 6 states. [2020-09-25 05:40:42,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:42,526 INFO L93 Difference]: Finished difference Result 5531 states and 7566 transitions. [2020-09-25 05:40:42,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:40:42,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-09-25 05:40:42,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:42,554 INFO L225 Difference]: With dead ends: 5531 [2020-09-25 05:40:42,554 INFO L226 Difference]: Without dead ends: 3783 [2020-09-25 05:40:42,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:40:42,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2020-09-25 05:40:42,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3558. [2020-09-25 05:40:42,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3558 states. [2020-09-25 05:40:42,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 4459 transitions. [2020-09-25 05:40:42,693 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 4459 transitions. Word has length 171 [2020-09-25 05:40:42,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:42,699 INFO L479 AbstractCegarLoop]: Abstraction has 3558 states and 4459 transitions. [2020-09-25 05:40:42,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:40:42,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 4459 transitions. [2020-09-25 05:40:42,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 05:40:42,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:42,704 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, 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] [2020-09-25 05:40:42,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:40:42,705 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:42,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:42,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1801569092, now seen corresponding path program 1 times [2020-09-25 05:40:42,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:42,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242947735] [2020-09-25 05:40:42,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:42,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:42,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:43,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:43,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:43,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:44,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:46,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:47,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:47,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:47,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 05:40:47,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:40:47,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 05:40:47,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:47,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:47,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:47,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:40:47,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 05:40:47,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:47,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:47,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:47,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:47,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:47,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:47,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:40:47,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:47,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:47,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:47,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:47,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:47,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:47,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:47,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:47,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:40:47,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:47,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 05:40:47,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:47,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:47,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:47,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:47,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:40:47,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:47,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:40:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:47,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:48,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:48,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 05:40:48,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:48,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 05:40:48,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:48,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:48,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:48,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:40:48,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 05:40:48,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:48,362 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:40:48,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242947735] [2020-09-25 05:40:48,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:48,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:40:48,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745451478] [2020-09-25 05:40:48,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:40:48,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:48,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:40:48,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:40:48,366 INFO L87 Difference]: Start difference. First operand 3558 states and 4459 transitions. Second operand 7 states. [2020-09-25 05:40:52,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:52,333 INFO L93 Difference]: Finished difference Result 8193 states and 10923 transitions. [2020-09-25 05:40:52,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:40:52,334 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-09-25 05:40:52,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:52,367 INFO L225 Difference]: With dead ends: 8193 [2020-09-25 05:40:52,367 INFO L226 Difference]: Without dead ends: 4839 [2020-09-25 05:40:52,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:40:52,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4839 states. [2020-09-25 05:40:52,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4839 to 4595. [2020-09-25 05:40:52,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4595 states. [2020-09-25 05:40:52,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4595 states to 4595 states and 5727 transitions. [2020-09-25 05:40:52,527 INFO L78 Accepts]: Start accepts. Automaton has 4595 states and 5727 transitions. Word has length 242 [2020-09-25 05:40:52,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:52,527 INFO L479 AbstractCegarLoop]: Abstraction has 4595 states and 5727 transitions. [2020-09-25 05:40:52,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:40:52,528 INFO L276 IsEmpty]: Start isEmpty. Operand 4595 states and 5727 transitions. [2020-09-25 05:40:52,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-25 05:40:52,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:52,534 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, 2, 2, 2, 2, 2, 2, 2, 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 05:40:52,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:40:52,535 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:52,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:52,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1772164935, now seen corresponding path program 1 times [2020-09-25 05:40:52,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:52,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103164541] [2020-09-25 05:40:52,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:52,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:52,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:52,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:53,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:53,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:53,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:55,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:55,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:57,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:57,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-09-25 05:40:57,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:40:57,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 05:40:57,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:57,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:57,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:40:57,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:40:57,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 05:40:57,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:40:57,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:57,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:57,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:57,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:57,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:57,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:40:57,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:57,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:57,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:40:57,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:57,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:40:57,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:57,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:57,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:57,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:57,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 05:40:57,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:57,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 05:40:57,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:57,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:40:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 05:40:57,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:57,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 05:40:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:57,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:58,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:58,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 05:40:58,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:58,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 05:40:58,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:58,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:58,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:58,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 05:40:58,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:58,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:58,268 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 106 proven. 73 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 05:40:58,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103164541] [2020-09-25 05:40:58,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:58,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:40:58,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055270976] [2020-09-25 05:40:58,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:40:58,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:58,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:40:58,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:40:58,272 INFO L87 Difference]: Start difference. First operand 4595 states and 5727 transitions. Second operand 8 states.