/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=0.2 --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_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:18:13,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:18:13,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:18:13,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:18:13,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:18:13,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:18:13,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:18:13,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:18:13,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:18:13,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:18:13,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:18:13,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:18:13,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:18:13,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:18:13,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:18:13,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:18:13,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:18:13,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:18:13,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:18:13,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:18:13,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:18:13,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:18:13,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:18:13,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:18:13,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:18:13,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:18:13,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:18:13,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:18:13,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:18:13,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:18:13,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:18:13,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:18:13,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:18:13,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:18:13,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:18:13,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:18:13,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:18:13,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:18:13,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:18:13,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:18:13,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:18:13,492 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 11:18:13,517 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:18:13,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:18:13,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:18:13,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:18:13,519 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:18:13,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:18:13,520 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:18:13,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:18:13,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:18:13,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:18:13,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:18:13,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:18:13,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:18:13,521 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:18:13,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:18:13,521 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:18:13,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:18:13,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:18:13,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:18:13,522 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:18:13,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:18:13,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:18:13,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:18:13,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:18:13,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:18:13,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:18:13,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:18:13,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:18:13,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:18:13,524 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:18:13,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:18:13,994 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:18:13,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:18:14,001 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:18:14,002 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:18:14,003 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2020-09-25 11:18:14,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04e38d703/7f22415d6f2a4486b5e38c4359e51ae5/FLAG61a8c37b6 [2020-09-25 11:18:14,735 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:18:14,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2020-09-25 11:18:14,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04e38d703/7f22415d6f2a4486b5e38c4359e51ae5/FLAG61a8c37b6 [2020-09-25 11:18:14,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04e38d703/7f22415d6f2a4486b5e38c4359e51ae5 [2020-09-25 11:18:15,010 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:18:15,017 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:18:15,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:15,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:18:15,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:18:15,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:14" (1/1) ... [2020-09-25 11:18:15,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@784ce183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:15, skipping insertion in model container [2020-09-25 11:18:15,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:14" (1/1) ... [2020-09-25 11:18:15,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:18:15,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:18:15,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:15,597 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:18:15,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:15,834 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:18:15,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:15 WrapperNode [2020-09-25 11:18:15,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:15,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:18:15,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:18:15,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:18:15,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:15" (1/1) ... [2020-09-25 11:18:15,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:15" (1/1) ... [2020-09-25 11:18:15,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:15" (1/1) ... [2020-09-25 11:18:15,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:15" (1/1) ... [2020-09-25 11:18:15,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:15" (1/1) ... [2020-09-25 11:18:15,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:15" (1/1) ... [2020-09-25 11:18:15,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:15" (1/1) ... [2020-09-25 11:18:15,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:18:15,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:18:15,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:18:15,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:18:15,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:15" (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 11:18:16,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:18:16,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:18:16,069 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:18:16,069 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:18:16,070 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:18:16,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:18:16,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:18:16,070 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:18:16,071 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:18:16,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:18:16,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:18:17,663 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:18:17,663 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:18:17,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:17 BoogieIcfgContainer [2020-09-25 11:18:17,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:18:17,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:18:17,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:18:17,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:18:17,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:18:14" (1/3) ... [2020-09-25 11:18:17,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e32c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:17, skipping insertion in model container [2020-09-25 11:18:17,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:15" (2/3) ... [2020-09-25 11:18:17,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e32c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:17, skipping insertion in model container [2020-09-25 11:18:17,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:17" (3/3) ... [2020-09-25 11:18:17,683 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label03.c [2020-09-25 11:18:17,695 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:18:17,706 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:18:17,727 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:18:17,762 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:18:17,762 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:18:17,763 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:18:17,763 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:18:17,763 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:18:17,763 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:18:17,763 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:18:17,763 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:18:17,794 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:18:17,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 11:18:17,806 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:17,807 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] [2020-09-25 11:18:17,808 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:17,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:17,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1813443015, now seen corresponding path program 1 times [2020-09-25 11:18:17,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:17,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152835332] [2020-09-25 11:18:17,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:18,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:18,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:18,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:19,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:19,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 11:18:19,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:18:19,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1257 [2020-09-25 11:18:19,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:19,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:19,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:19,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:18:19,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:18:19,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:18:19,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:19,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:19,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:19,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:19,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:19,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:18:19,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:19,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:19,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:18:19,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:19,436 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 11:18:19,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152835332] [2020-09-25 11:18:19,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:18:19,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:18:19,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682422980] [2020-09-25 11:18:19,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:18:19,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:19,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:18:19,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:18:19,474 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:18:21,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:21,625 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 11:18:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:18:21,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-09-25 11:18:21,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:21,652 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 11:18:21,652 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 11:18:21,667 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 11:18:21,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 11:18:21,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 11:18:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 11:18:21,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 11:18:21,775 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 55 [2020-09-25 11:18:21,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:21,776 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 11:18:21,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:18:21,776 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 11:18:21,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 11:18:21,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:21,784 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:21,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:18:21,785 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:21,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:21,786 INFO L82 PathProgramCache]: Analyzing trace with hash -226140616, now seen corresponding path program 1 times [2020-09-25 11:18:21,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:21,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088384052] [2020-09-25 11:18:21,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:21,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:22,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:22,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:22,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:22,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:24,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:24,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 11:18:24,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:18:24,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2800 [2020-09-25 11:18:24,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:24,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:18:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:18:24,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 11:18:24,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:24,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:24,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:24,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:24,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:24,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:24,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:18:24,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:24,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:18:24,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:24,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:24,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:24,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:25,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:18:25,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:25,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 11:18:25,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:25,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:25,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:25,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:18:25,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:18:25,148 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:18:25,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088384052] [2020-09-25 11:18:25,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:25,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:18:25,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213304008] [2020-09-25 11:18:25,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:18:25,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:25,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:18:25,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:18:25,156 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 6 states. [2020-09-25 11:18:27,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:27,479 INFO L93 Difference]: Finished difference Result 1165 states and 1482 transitions. [2020-09-25 11:18:27,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:18:27,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-09-25 11:18:27,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:27,489 INFO L225 Difference]: With dead ends: 1165 [2020-09-25 11:18:27,489 INFO L226 Difference]: Without dead ends: 1163 [2020-09-25 11:18:27,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:18:27,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-09-25 11:18:27,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 851. [2020-09-25 11:18:27,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 851 states. [2020-09-25 11:18:27,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1111 transitions. [2020-09-25 11:18:27,546 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1111 transitions. Word has length 134 [2020-09-25 11:18:27,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:27,547 INFO L479 AbstractCegarLoop]: Abstraction has 851 states and 1111 transitions. [2020-09-25 11:18:27,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:18:27,547 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1111 transitions. [2020-09-25 11:18:27,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-25 11:18:27,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:27,560 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:18:27,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:18:27,561 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:27,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:27,561 INFO L82 PathProgramCache]: Analyzing trace with hash -281265186, now seen corresponding path program 1 times [2020-09-25 11:18:27,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:27,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170546030] [2020-09-25 11:18:27,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:27,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:28,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:28,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:28,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:28,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:29,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:32,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:32,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-09-25 11:18:32,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:18:32,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:18:32,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:32,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:18:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:18:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-09-25 11:18:32,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:32,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:32,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:32,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:32,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:32,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:32,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:18:32,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:32,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:32,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:18:32,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:32,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:18:32,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:32,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:32,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:32,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:32,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:32,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:18:32,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:32,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 11:18:32,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:32,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:18:32,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:33,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:18:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:33,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:33,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:33,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:33,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 11:18:33,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:33,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-09-25 11:18:33,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:33,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:33,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:33,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:33,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 11:18:33,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:33,852 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 79 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 11:18:33,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170546030] [2020-09-25 11:18:33,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:33,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:18:33,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568128214] [2020-09-25 11:18:33,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:18:33,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:33,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:18:33,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:18:33,856 INFO L87 Difference]: Start difference. First operand 851 states and 1111 transitions. Second operand 10 states. [2020-09-25 11:18:42,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:42,067 INFO L93 Difference]: Finished difference Result 2360 states and 3192 transitions. [2020-09-25 11:18:42,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:18:42,068 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 263 [2020-09-25 11:18:42,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:42,088 INFO L225 Difference]: With dead ends: 2360 [2020-09-25 11:18:42,088 INFO L226 Difference]: Without dead ends: 1500 [2020-09-25 11:18:42,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:18:42,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2020-09-25 11:18:42,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1306. [2020-09-25 11:18:42,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1306 states. [2020-09-25 11:18:42,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 1637 transitions. [2020-09-25 11:18:42,163 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 1637 transitions. Word has length 263 [2020-09-25 11:18:42,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:42,167 INFO L479 AbstractCegarLoop]: Abstraction has 1306 states and 1637 transitions. [2020-09-25 11:18:42,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:18:42,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 1637 transitions. [2020-09-25 11:18:42,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-25 11:18:42,176 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:42,177 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:18:42,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:18:42,177 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:42,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:42,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1969044888, now seen corresponding path program 1 times [2020-09-25 11:18:42,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:42,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117643219] [2020-09-25 11:18:42,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:42,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:42,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:42,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:42,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:44,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:44,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:47,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:47,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-09-25 11:18:47,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:18:47,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:18:47,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:47,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:47,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:18:47,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:18:47,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-09-25 11:18:47,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:47,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:47,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:47,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:47,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:47,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:47,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:18:47,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:47,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:47,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:47,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:47,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:18:47,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:47,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:47,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:47,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:47,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:47,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:18:47,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:47,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 11:18:47,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:47,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:47,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:47,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:47,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:18:47,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:47,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:18:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:47,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:47,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:47,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 11:18:47,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:47,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-25 11:18:47,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:47,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:47,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:47,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:47,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 11:18:47,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 11:18:47,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117643219] [2020-09-25 11:18:47,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:47,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:18:47,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077669459] [2020-09-25 11:18:47,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:18:47,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:47,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:18:47,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:18:47,965 INFO L87 Difference]: Start difference. First operand 1306 states and 1637 transitions. Second operand 7 states. [2020-09-25 11:18:50,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:50,254 INFO L93 Difference]: Finished difference Result 3259 states and 4193 transitions. [2020-09-25 11:18:50,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:18:50,255 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-09-25 11:18:50,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:50,273 INFO L225 Difference]: With dead ends: 3259 [2020-09-25 11:18:50,273 INFO L226 Difference]: Without dead ends: 1968 [2020-09-25 11:18:50,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:18:50,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2020-09-25 11:18:50,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1774. [2020-09-25 11:18:50,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1774 states. [2020-09-25 11:18:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2159 transitions. [2020-09-25 11:18:50,375 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2159 transitions. Word has length 269 [2020-09-25 11:18:50,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:50,376 INFO L479 AbstractCegarLoop]: Abstraction has 1774 states and 2159 transitions. [2020-09-25 11:18:50,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:18:50,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2159 transitions. [2020-09-25 11:18:50,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-25 11:18:50,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:50,388 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:18:50,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:18:50,389 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:50,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:50,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1451587462, now seen corresponding path program 1 times [2020-09-25 11:18:50,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:50,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981758924] [2020-09-25 11:18:50,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:50,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:50,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:50,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:51,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:53,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:54,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:54,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:54,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:55,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:55,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:55,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-09-25 11:18:55,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:18:55,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 11:18:55,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:55,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:55,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:18:55,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:18:55,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-09-25 11:18:55,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:55,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:55,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:55,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:55,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:55,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:55,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:18:55,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:55,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:55,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:55,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:55,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:18:55,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:55,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:55,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:55,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:55,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:18:55,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:55,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 11:18:55,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:55,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:55,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:55,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:55,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:18:55,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:55,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 11:18:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:55,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:56,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:56,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 11:18:56,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:56,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-25 11:18:56,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:56,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:56,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:56,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:56,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 11:18:56,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:18:56,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981758924] [2020-09-25 11:18:56,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:56,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:18:56,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008057496] [2020-09-25 11:18:56,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:18:56,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:56,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:18:56,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:18:56,321 INFO L87 Difference]: Start difference. First operand 1774 states and 2159 transitions. Second operand 10 states. [2020-09-25 11:19:00,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:00,797 INFO L93 Difference]: Finished difference Result 4662 states and 6010 transitions. [2020-09-25 11:19:00,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 11:19:00,798 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 279 [2020-09-25 11:19:00,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:00,818 INFO L225 Difference]: With dead ends: 4662 [2020-09-25 11:19:00,818 INFO L226 Difference]: Without dead ends: 3053 [2020-09-25 11:19:00,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-09-25 11:19:00,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2020-09-25 11:19:00,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 2940. [2020-09-25 11:19:00,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2940 states. [2020-09-25 11:19:00,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 3729 transitions. [2020-09-25 11:19:00,920 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 3729 transitions. Word has length 279 [2020-09-25 11:19:00,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:00,921 INFO L479 AbstractCegarLoop]: Abstraction has 2940 states and 3729 transitions. [2020-09-25 11:19:00,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:19:00,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 3729 transitions. [2020-09-25 11:19:00,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-09-25 11:19:00,937 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:00,937 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:00,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:19:00,938 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:00,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:00,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1322662894, now seen corresponding path program 1 times [2020-09-25 11:19:00,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:00,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867706420] [2020-09-25 11:19:00,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:01,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:01,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:01,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:01,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking...