/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=1.0 --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/Problem01_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:00:13,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:00:13,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:00:13,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:00:13,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:00:13,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:00:13,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:00:13,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:00:13,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:00:13,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:00:13,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:00:13,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:00:13,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:00:13,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:00:13,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:00:13,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:00:13,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:00:13,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:00:13,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:00:13,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:00:13,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:00:13,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:00:13,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:00:13,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:00:13,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:00:13,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:00:13,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:00:13,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:00:13,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:00:13,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:00:13,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:00:13,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:00:13,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:00:13,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:00:13,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:00:13,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:00:13,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:00:13,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:00:13,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:00:13,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:00:13,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:00:13,482 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 09:00:13,535 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:00:13,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:00:13,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:00:13,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:00:13,538 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:00:13,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:00:13,539 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:00:13,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:00:13,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:00:13,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:00:13,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:00:13,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:00:13,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:00:13,542 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:00:13,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:00:13,542 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:00:13,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:00:13,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:00:13,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:00:13,543 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:00:13,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:00:13,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:00:13,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:00:13,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:00:13,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:00:13,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:00:13,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:00:13,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:00:13,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:00:13,545 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:00:14,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:00:14,030 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:00:14,038 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:00:14,041 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:00:14,041 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:00:14,043 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-09-25 09:00:14,133 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49cb0da17/521ba2c5fe964cccab5bb38db0629f2c/FLAGad1358f82 [2020-09-25 09:00:14,831 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:00:14,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-09-25 09:00:14,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49cb0da17/521ba2c5fe964cccab5bb38db0629f2c/FLAGad1358f82 [2020-09-25 09:00:15,040 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49cb0da17/521ba2c5fe964cccab5bb38db0629f2c [2020-09-25 09:00:15,057 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:00:15,063 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:00:15,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:00:15,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:00:15,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:00:15,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:00:15" (1/1) ... [2020-09-25 09:00:15,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4757cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:15, skipping insertion in model container [2020-09-25 09:00:15,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:00:15" (1/1) ... [2020-09-25 09:00:15,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:00:15,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:00:15,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:00:15,774 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:00:15,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:00:15,902 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:00:15,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:15 WrapperNode [2020-09-25 09:00:15,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:00:15,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:00:15,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:00:15,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:00:15,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:15" (1/1) ... [2020-09-25 09:00:15,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:15" (1/1) ... [2020-09-25 09:00:15,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:15" (1/1) ... [2020-09-25 09:00:15,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:15" (1/1) ... [2020-09-25 09:00:15,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:15" (1/1) ... [2020-09-25 09:00:16,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:15" (1/1) ... [2020-09-25 09:00:16,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:15" (1/1) ... [2020-09-25 09:00:16,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:00:16,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:00:16,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:00:16,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:00:16,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:15" (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 09:00:16,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:00:16,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:00:16,112 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:00:16,112 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:00:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:00:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:00:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:00:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:00:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:00:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:00:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:00:17,481 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:00:17,482 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:00:17,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:00:17 BoogieIcfgContainer [2020-09-25 09:00:17,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:00:17,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:00:17,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:00:17,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:00:17,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:00:15" (1/3) ... [2020-09-25 09:00:17,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f42e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:00:17, skipping insertion in model container [2020-09-25 09:00:17,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:15" (2/3) ... [2020-09-25 09:00:17,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f42e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:00:17, skipping insertion in model container [2020-09-25 09:00:17,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:00:17" (3/3) ... [2020-09-25 09:00:17,503 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label26.c [2020-09-25 09:00:17,515 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:00:17,528 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:00:17,551 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:00:17,586 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:00:17,587 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:00:17,587 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:00:17,587 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:00:17,587 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:00:17,587 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:00:17,587 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:00:17,588 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:00:17,622 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 09:00:17,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 09:00:17,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:17,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:17,645 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:17,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:17,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1760559547, now seen corresponding path program 1 times [2020-09-25 09:00:17,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:17,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283324542] [2020-09-25 09:00:17,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:18,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:18,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:18,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:19,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:19,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:20,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:21,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:22,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:22,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 09:00:22,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:00:22,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 09:00:22,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:22,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:22,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:22,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:00:22,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 09:00:22,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:00:23,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:23,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:23,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:23,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:23,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:23,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 09:00:23,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:23,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:23,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:23,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:23,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:00:23,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:00:23,369 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 09:00:23,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283324542] [2020-09-25 09:00:23,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:00:23,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:00:23,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228498506] [2020-09-25 09:00:23,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:00:23,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:23,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:00:23,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:00:23,418 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 09:00:25,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:25,802 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 09:00:25,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:00:25,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-09-25 09:00:25,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:25,848 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 09:00:25,849 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 09:00:25,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:00:25,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 09:00:25,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 09:00:25,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 09:00:25,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 09:00:25,970 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 131 [2020-09-25 09:00:25,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:25,971 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 09:00:25,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:00:25,971 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 09:00:25,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 09:00:25,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:25,979 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:00:25,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:00:25,980 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:25,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:25,980 INFO L82 PathProgramCache]: Analyzing trace with hash 926344477, now seen corresponding path program 1 times [2020-09-25 09:00:25,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:25,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099851902] [2020-09-25 09:00:25,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:26,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:26,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:26,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:27,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:31,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:31,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 09:00:31,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:00:31,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 09:00:31,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:31,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:31,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:31,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:00:31,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 09:00:31,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 09:00:31,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:31,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:31,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:31,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:31,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:31,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 09:00:31,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:31,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:31,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:31,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:31,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:00:31,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:00:31,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:31,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:31,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:31,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:31,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:31,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 09:00:31,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:31,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:31,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:31,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:31,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:00:31,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:31,395 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:31,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099851902] [2020-09-25 09:00:31,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:00:31,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:00:31,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388852123] [2020-09-25 09:00:31,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:00:31,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:31,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:00:31,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:00:31,402 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 09:00:33,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:33,774 INFO L93 Difference]: Finished difference Result 1538 states and 1910 transitions. [2020-09-25 09:00:33,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:00:33,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-09-25 09:00:33,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:33,783 INFO L225 Difference]: With dead ends: 1538 [2020-09-25 09:00:33,783 INFO L226 Difference]: Without dead ends: 959 [2020-09-25 09:00:33,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:00:33,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-09-25 09:00:33,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 901. [2020-09-25 09:00:33,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-09-25 09:00:33,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1109 transitions. [2020-09-25 09:00:33,835 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1109 transitions. Word has length 152 [2020-09-25 09:00:33,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:33,835 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1109 transitions. [2020-09-25 09:00:33,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:00:33,836 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1109 transitions. [2020-09-25 09:00:33,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 09:00:33,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:33,841 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:00:33,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:00:33,842 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:33,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:33,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1561438327, now seen corresponding path program 1 times [2020-09-25 09:00:33,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:33,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840760681] [2020-09-25 09:00:33,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:33,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:33,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:34,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:34,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:36,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:37,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:37,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:38,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:38,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 09:00:38,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:00:38,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 09:00:38,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:38,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:00:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 09:00:38,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:38,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:38,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:39,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:39,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:39,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:39,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 09:00:39,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:39,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:39,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:39,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:39,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:00:39,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:39,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:39,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:39,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:39,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:00:39,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:39,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 09:00:39,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:39,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:39,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:39,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:39,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:00:39,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:39,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840760681] [2020-09-25 09:00:39,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:00:39,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:00:39,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731822805] [2020-09-25 09:00:39,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:00:39,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:39,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:00:39,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:00:39,183 INFO L87 Difference]: Start difference. First operand 901 states and 1109 transitions. Second operand 7 states. [2020-09-25 09:00:41,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:41,538 INFO L93 Difference]: Finished difference Result 2542 states and 3294 transitions. [2020-09-25 09:00:41,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:00:41,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-09-25 09:00:41,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:41,551 INFO L225 Difference]: With dead ends: 2542 [2020-09-25 09:00:41,552 INFO L226 Difference]: Without dead ends: 1665 [2020-09-25 09:00:41,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 09:00:41,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2020-09-25 09:00:41,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1554. [2020-09-25 09:00:41,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-09-25 09:00:41,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 1939 transitions. [2020-09-25 09:00:41,653 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 1939 transitions. Word has length 153 [2020-09-25 09:00:41,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:41,654 INFO L479 AbstractCegarLoop]: Abstraction has 1554 states and 1939 transitions. [2020-09-25 09:00:41,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:00:41,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 1939 transitions. [2020-09-25 09:00:41,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 09:00:41,668 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:41,669 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:41,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:00:41,669 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:41,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:41,670 INFO L82 PathProgramCache]: Analyzing trace with hash 2020064762, now seen corresponding path program 1 times [2020-09-25 09:00:41,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:41,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360958704] [2020-09-25 09:00:41,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:41,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:41,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:42,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:42,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:42,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:42,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:42,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:42,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:43,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:45,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:45,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:46,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:46,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 09:00:46,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 09:00:46,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 09:00:46,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:46,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:46,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:46,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 09:00:46,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 09:00:46,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:46,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:46,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:46,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:46,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:46,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:46,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:00:46,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:46,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:46,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:46,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:46,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:46,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:46,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:46,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 09:00:46,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:46,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 09:00:46,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:46,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 09:00:46,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:00:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:47,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360958704] [2020-09-25 09:00:47,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:47,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:00:47,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394693048] [2020-09-25 09:00:47,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:00:47,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:47,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:00:47,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:00:47,054 INFO L87 Difference]: Start difference. First operand 1554 states and 1939 transitions. Second operand 5 states. [2020-09-25 09:00:49,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:49,165 INFO L93 Difference]: Finished difference Result 4289 states and 5562 transitions. [2020-09-25 09:00:49,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:00:49,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-09-25 09:00:49,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:49,184 INFO L225 Difference]: With dead ends: 4289 [2020-09-25 09:00:49,184 INFO L226 Difference]: Without dead ends: 2759 [2020-09-25 09:00:49,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:00:49,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2759 states. [2020-09-25 09:00:49,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2759 to 2420. [2020-09-25 09:00:49,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2420 states. [2020-09-25 09:00:49,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3040 transitions. [2020-09-25 09:00:49,297 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3040 transitions. Word has length 178 [2020-09-25 09:00:49,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:49,297 INFO L479 AbstractCegarLoop]: Abstraction has 2420 states and 3040 transitions. [2020-09-25 09:00:49,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:00:49,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3040 transitions. [2020-09-25 09:00:49,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 09:00:49,309 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:49,310 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 09:00:49,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:00:49,310 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:49,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:49,310 INFO L82 PathProgramCache]: Analyzing trace with hash 727992105, now seen corresponding path program 1 times [2020-09-25 09:00:49,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:49,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119820671] [2020-09-25 09:00:49,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:49,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:49,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:50,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:51,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:51,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:51,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:51,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:54,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:54,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 09:00:54,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:00:54,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 09:00:54,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:54,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:54,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:54,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 09:00:54,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 09:00:54,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:54,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:54,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:54,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:54,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:54,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:54,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:00:54,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:54,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:54,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:54,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:54,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:54,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:54,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:54,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:54,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:00:54,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:54,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:00:54,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:54,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:00:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:54,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:54,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:54,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:00:54,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:54,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 09:00:54,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:54,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 09:00:54,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:54,807 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:00:54,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119820671] [2020-09-25 09:00:54,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:54,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:00:54,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101136224] [2020-09-25 09:00:54,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:00:54,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:54,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:00:54,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:00:54,810 INFO L87 Difference]: Start difference. First operand 2420 states and 3040 transitions. Second operand 7 states. [2020-09-25 09:00:57,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:57,920 INFO L93 Difference]: Finished difference Result 5529 states and 7341 transitions. [2020-09-25 09:00:57,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:00:57,921 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 09:00:57,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:57,942 INFO L225 Difference]: With dead ends: 5529 [2020-09-25 09:00:57,943 INFO L226 Difference]: Without dead ends: 3133 [2020-09-25 09:00:57,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:00:57,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2020-09-25 09:00:58,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 2891. [2020-09-25 09:00:58,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2891 states. [2020-09-25 09:00:58,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2891 states to 2891 states and 3649 transitions. [2020-09-25 09:00:58,066 INFO L78 Accepts]: Start accepts. Automaton has 2891 states and 3649 transitions. Word has length 181 [2020-09-25 09:00:58,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:58,068 INFO L479 AbstractCegarLoop]: Abstraction has 2891 states and 3649 transitions. [2020-09-25 09:00:58,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:00:58,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2891 states and 3649 transitions. [2020-09-25 09:00:58,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 09:00:58,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:58,085 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:58,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:00:58,085 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:58,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:58,085 INFO L82 PathProgramCache]: Analyzing trace with hash -807439965, now seen corresponding path program 1 times [2020-09-25 09:00:58,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:58,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490513197] [2020-09-25 09:00:58,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:58,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:00,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:00,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:00,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking...