/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:11:07,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:11:07,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:11:07,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:11:07,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:11:07,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:11:07,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:11:07,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:11:07,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:11:07,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:11:07,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:11:07,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:11:07,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:11:07,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:11:07,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:11:07,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:11:07,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:11:07,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:11:07,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:11:07,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:11:07,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:11:07,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:11:07,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:11:07,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:11:07,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:11:07,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:11:07,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:11:07,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:11:07,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:11:07,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:11:07,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:11:07,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:11:07,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:11:07,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:11:07,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:11:07,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:11:07,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:11:07,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:11:07,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:11:07,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:11:07,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:11:07,529 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 10:11:07,555 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:11:07,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:11:07,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:11:07,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:11:07,557 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:11:07,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:11:07,557 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:11:07,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:11:07,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:11:07,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:11:07,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:11:07,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:11:07,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:11:07,559 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:11:07,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:11:07,559 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:11:07,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:11:07,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:11:07,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:11:07,560 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:11:07,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:11:07,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:11:07,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:11:07,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:11:07,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:11:07,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:11:07,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:11:07,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:11:07,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:11:07,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:11:07,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:11:07,987 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:11:07,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:11:07,995 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:11:07,997 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:11:07,998 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-25 10:11:08,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af6e07a03/9fc58814571a433ab6ce76f760db4fde/FLAGde980bb5b [2020-09-25 10:11:08,728 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:11:08,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-25 10:11:08,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af6e07a03/9fc58814571a433ab6ce76f760db4fde/FLAGde980bb5b [2020-09-25 10:11:08,959 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af6e07a03/9fc58814571a433ab6ce76f760db4fde [2020-09-25 10:11:08,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:11:08,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:11:08,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:08,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:11:08,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:11:08,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:08" (1/1) ... [2020-09-25 10:11:08,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:08, skipping insertion in model container [2020-09-25 10:11:08,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:08" (1/1) ... [2020-09-25 10:11:09,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:11:09,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:11:09,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:09,648 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:11:09,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:09,773 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:11:09,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:09 WrapperNode [2020-09-25 10:11:09,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:09,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:11:09,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:11:09,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:11:09,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:09" (1/1) ... [2020-09-25 10:11:09,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:09" (1/1) ... [2020-09-25 10:11:09,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:09" (1/1) ... [2020-09-25 10:11:09,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:09" (1/1) ... [2020-09-25 10:11:09,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:09" (1/1) ... [2020-09-25 10:11:09,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:09" (1/1) ... [2020-09-25 10:11:09,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:09" (1/1) ... [2020-09-25 10:11:09,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:11:09,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:11:09,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:11:09,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:11:09,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:09" (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 10:11:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:11:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:11:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:11:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:11:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:11:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:11:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:11:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:11:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:11:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:11:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:11:11,385 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:11:11,385 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:11:11,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:11 BoogieIcfgContainer [2020-09-25 10:11:11,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:11:11,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:11:11,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:11:11,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:11:11,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:11:08" (1/3) ... [2020-09-25 10:11:11,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:11, skipping insertion in model container [2020-09-25 10:11:11,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:09" (2/3) ... [2020-09-25 10:11:11,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:11, skipping insertion in model container [2020-09-25 10:11:11,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:11" (3/3) ... [2020-09-25 10:11:11,404 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label06.c [2020-09-25 10:11:11,415 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:11:11,426 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:11:11,448 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:11:11,481 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:11:11,481 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:11:11,482 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:11:11,482 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:11:11,482 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:11:11,482 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:11:11,482 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:11:11,482 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:11:11,511 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:11:11,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 10:11:11,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:11,521 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] [2020-09-25 10:11:11,522 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:11,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:11,529 INFO L82 PathProgramCache]: Analyzing trace with hash -200720489, now seen corresponding path program 1 times [2020-09-25 10:11:11,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:11,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001699951] [2020-09-25 10:11:11,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:11,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:11,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:12,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:12,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:12,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 10:11:12,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:11:12,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 881 [2020-09-25 10:11:12,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:12,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:11:12,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:11:12,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 10:11:12,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:11:12,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:12,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:12,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:12,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:12,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:12,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:11:12,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:12,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:12,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:11:12,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:12,748 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 10:11:12,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001699951] [2020-09-25 10:11:12,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:11:12,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:11:12,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523405476] [2020-09-25 10:11:12,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:11:12,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:12,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:11:12,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:11:12,785 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:11:14,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:14,683 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 10:11:14,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:11:14,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-25 10:11:14,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:14,717 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 10:11:14,717 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 10:11:14,727 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 10:11:14,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 10:11:14,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 10:11:14,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 10:11:14,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 10:11:14,825 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 43 [2020-09-25 10:11:14,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:14,826 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 10:11:14,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:11:14,826 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 10:11:14,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 10:11:14,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:14,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:14,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:11:14,838 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:14,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:14,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1041597203, now seen corresponding path program 1 times [2020-09-25 10:11:14,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:14,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973170217] [2020-09-25 10:11:14,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:14,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:15,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:15,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:16,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 10:11:16,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:11:16,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1743 [2020-09-25 10:11:16,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:16,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:11:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:16,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 10:11:16,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:16,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:16,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:16,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:16,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:16,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:11:16,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:16,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:16,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:16,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:16,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:11:16,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:16,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:16,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:17,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:17,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:11:17,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:17,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-25 10:11:17,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:17,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:17,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:11:17,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:17,181 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:11:17,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973170217] [2020-09-25 10:11:17,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:17,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:11:17,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873856633] [2020-09-25 10:11:17,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:11:17,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:17,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:11:17,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:11:17,185 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 10:11:19,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:19,561 INFO L93 Difference]: Finished difference Result 1475 states and 1880 transitions. [2020-09-25 10:11:19,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:11:19,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-09-25 10:11:19,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:19,570 INFO L225 Difference]: With dead ends: 1475 [2020-09-25 10:11:19,571 INFO L226 Difference]: Without dead ends: 947 [2020-09-25 10:11:19,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:11:19,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2020-09-25 10:11:19,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 888. [2020-09-25 10:11:19,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-09-25 10:11:19,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1122 transitions. [2020-09-25 10:11:19,630 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1122 transitions. Word has length 123 [2020-09-25 10:11:19,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:19,632 INFO L479 AbstractCegarLoop]: Abstraction has 888 states and 1122 transitions. [2020-09-25 10:11:19,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:11:19,633 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1122 transitions. [2020-09-25 10:11:19,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 10:11:19,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:19,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:19,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:11:19,640 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:19,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:19,640 INFO L82 PathProgramCache]: Analyzing trace with hash -203251606, now seen corresponding path program 1 times [2020-09-25 10:11:19,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:19,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079959779] [2020-09-25 10:11:19,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:19,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:20,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:20,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:20,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:22,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 10:11:22,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:11:22,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2657 [2020-09-25 10:11:22,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:22,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:11:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 10:11:22,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:22,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:22,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:22,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:22,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:22,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:11:22,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:22,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:22,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:22,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:22,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:11:22,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:22,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:22,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:22,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:11:22,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:22,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-25 10:11:22,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:22,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:22,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:11:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:11:22,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:23,054 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:23,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079959779] [2020-09-25 10:11:23,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:23,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:11:23,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119840449] [2020-09-25 10:11:23,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:11:23,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:23,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:11:23,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:11:23,058 INFO L87 Difference]: Start difference. First operand 888 states and 1122 transitions. Second operand 12 states. [2020-09-25 10:11:25,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:25,919 INFO L93 Difference]: Finished difference Result 2017 states and 2625 transitions. [2020-09-25 10:11:25,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 10:11:25,920 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 132 [2020-09-25 10:11:25,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:25,928 INFO L225 Difference]: With dead ends: 2017 [2020-09-25 10:11:25,928 INFO L226 Difference]: Without dead ends: 1116 [2020-09-25 10:11:25,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-09-25 10:11:25,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2020-09-25 10:11:25,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1042. [2020-09-25 10:11:25,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-09-25 10:11:25,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1310 transitions. [2020-09-25 10:11:25,978 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1310 transitions. Word has length 132 [2020-09-25 10:11:25,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:25,979 INFO L479 AbstractCegarLoop]: Abstraction has 1042 states and 1310 transitions. [2020-09-25 10:11:25,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:11:25,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1310 transitions. [2020-09-25 10:11:25,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 10:11:25,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:25,983 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:25,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:11:25,983 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:25,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:25,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1010276362, now seen corresponding path program 1 times [2020-09-25 10:11:25,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:25,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257439816] [2020-09-25 10:11:25,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:26,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:26,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:26,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:26,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:27,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:28,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:28,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:31,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:31,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 10:11:31,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:11:31,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:11:31,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:31,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:31,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:11:31,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:31,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 10:11:31,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:31,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:31,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:31,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:31,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:31,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:31,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:11:31,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:31,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:11:31,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:31,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:31,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:31,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:31,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:31,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 10:11:31,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:31,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-09-25 10:11:31,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:31,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:31,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:11:31,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:31,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 10:11:31,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:31,498 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:31,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257439816] [2020-09-25 10:11:31,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:31,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:11:31,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454925790] [2020-09-25 10:11:31,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:11:31,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:31,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:11:31,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:11:31,505 INFO L87 Difference]: Start difference. First operand 1042 states and 1310 transitions. Second operand 7 states. [2020-09-25 10:11:34,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:34,604 INFO L93 Difference]: Finished difference Result 2943 states and 3891 transitions. [2020-09-25 10:11:34,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:11:34,606 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-09-25 10:11:34,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:34,619 INFO L225 Difference]: With dead ends: 2943 [2020-09-25 10:11:34,620 INFO L226 Difference]: Without dead ends: 2066 [2020-09-25 10:11:34,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:11:34,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2020-09-25 10:11:34,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1659. [2020-09-25 10:11:34,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1659 states. [2020-09-25 10:11:34,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2173 transitions. [2020-09-25 10:11:34,694 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2173 transitions. Word has length 151 [2020-09-25 10:11:34,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:34,695 INFO L479 AbstractCegarLoop]: Abstraction has 1659 states and 2173 transitions. [2020-09-25 10:11:34,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:11:34,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2173 transitions. [2020-09-25 10:11:34,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 10:11:34,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:34,699 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:34,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:11:34,699 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:34,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:34,699 INFO L82 PathProgramCache]: Analyzing trace with hash -591181850, now seen corresponding path program 1 times [2020-09-25 10:11:34,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:34,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578523361] [2020-09-25 10:11:34,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:34,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:35,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:35,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:35,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:35,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:37,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:37,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 10:11:37,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:11:37,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3068 [2020-09-25 10:11:37,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:37,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:11:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:11:37,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 10:11:37,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:11:37,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:37,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:37,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:37,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:37,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:37,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:11:37,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:37,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:37,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:11:37,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:37,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:11:37,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:38,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:38,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:38,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:38,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:38,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 10:11:38,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:38,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-09-25 10:11:38,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:38,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:38,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:38,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:38,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 10:11:38,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:11:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:38,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578523361] [2020-09-25 10:11:38,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:38,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:11:38,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924814632] [2020-09-25 10:11:38,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:11:38,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:38,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:11:38,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:11:38,671 INFO L87 Difference]: Start difference. First operand 1659 states and 2173 transitions. Second operand 9 states. [2020-09-25 10:11:41,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:41,431 INFO L93 Difference]: Finished difference Result 3662 states and 4940 transitions. [2020-09-25 10:11:41,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:11:41,432 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 165 [2020-09-25 10:11:41,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:41,444 INFO L225 Difference]: With dead ends: 3662 [2020-09-25 10:11:41,445 INFO L226 Difference]: Without dead ends: 2139 [2020-09-25 10:11:41,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:11:41,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2020-09-25 10:11:41,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2116. [2020-09-25 10:11:41,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2116 states. [2020-09-25 10:11:41,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 2730 transitions. [2020-09-25 10:11:41,514 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 2730 transitions. Word has length 165 [2020-09-25 10:11:41,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:41,515 INFO L479 AbstractCegarLoop]: Abstraction has 2116 states and 2730 transitions. [2020-09-25 10:11:41,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:11:41,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 2730 transitions. [2020-09-25 10:11:41,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 10:11:41,519 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:41,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:41,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:11:41,520 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:41,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:41,520 INFO L82 PathProgramCache]: Analyzing trace with hash -537407433, now seen corresponding path program 1 times [2020-09-25 10:11:41,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:41,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839618216] [2020-09-25 10:11:41,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:41,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:41,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:42,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:43,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:43,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:43,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:43,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:44,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:46,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:46,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 10:11:46,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:11:46,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 10:11:46,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:46,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:11:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:11:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-09-25 10:11:46,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:47,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:47,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:47,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:47,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:47,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:47,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:11:47,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:47,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:11:47,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:47,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:11:47,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:47,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:47,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:47,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:47,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:47,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 10:11:47,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:47,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-09-25 10:11:47,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:47,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:47,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:47,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:47,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 10:11:47,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:47,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839618216] [2020-09-25 10:11:47,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:47,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:11:47,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889700304] [2020-09-25 10:11:47,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:11:47,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:47,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:11:47,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:11:47,700 INFO L87 Difference]: Start difference. First operand 2116 states and 2730 transitions. Second operand 12 states. [2020-09-25 10:11:49,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:49,782 INFO L93 Difference]: Finished difference Result 4960 states and 6544 transitions. [2020-09-25 10:11:49,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:11:49,782 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 195 [2020-09-25 10:11:49,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:49,796 INFO L225 Difference]: With dead ends: 4960 [2020-09-25 10:11:49,796 INFO L226 Difference]: Without dead ends: 2873 [2020-09-25 10:11:49,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:11:49,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-09-25 10:11:49,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2259. [2020-09-25 10:11:49,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2259 states. [2020-09-25 10:11:49,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 2836 transitions. [2020-09-25 10:11:49,869 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 2836 transitions. Word has length 195 [2020-09-25 10:11:49,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:49,869 INFO L479 AbstractCegarLoop]: Abstraction has 2259 states and 2836 transitions. [2020-09-25 10:11:49,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:11:49,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 2836 transitions. [2020-09-25 10:11:49,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 10:11:49,874 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:49,874 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:11:49,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:11:49,875 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:49,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:49,875 INFO L82 PathProgramCache]: Analyzing trace with hash -708481072, now seen corresponding path program 1 times [2020-09-25 10:11:49,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:49,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399515243] [2020-09-25 10:11:49,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:49,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:49,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:51,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:54,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:54,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 10:11:54,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:11:54,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4608 [2020-09-25 10:11:54,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:54,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:54,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:11:54,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-25 10:11:54,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 10:11:54,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:54,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:54,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:54,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:54,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:54,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:54,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:11:54,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:54,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:54,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:11:54,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:54,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:11:54,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:54,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:54,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:54,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:54,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:11:54,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:54,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 10:11:54,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:54,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 10:11:54,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:54,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 10:11:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:54,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:54,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:54,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:54,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:11:54,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:54,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 10:11:54,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:54,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:54,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:54,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:54,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:11:54,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:55,037 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 98 proven. 23 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 10:11:55,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399515243] [2020-09-25 10:11:55,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:55,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:11:55,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311092229] [2020-09-25 10:11:55,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:11:55,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:55,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:11:55,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:11:55,040 INFO L87 Difference]: Start difference. First operand 2259 states and 2836 transitions. Second operand 7 states.