/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=0.5 --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_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:36:48,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:36:48,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:36:48,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:36:48,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:36:48,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:36:48,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:36:48,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:36:48,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:36:48,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:36:48,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:36:48,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:36:48,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:36:48,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:36:48,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:36:48,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:36:48,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:36:48,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:36:48,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:36:48,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:36:48,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:36:48,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:36:48,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:36:48,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:36:48,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:36:48,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:36:48,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:36:48,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:36:48,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:36:48,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:36:48,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:36:48,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:36:48,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:36:48,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:36:48,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:36:48,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:36:48,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:36:48,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:36:48,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:36:48,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:36:48,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:36:48,464 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 14:36:48,512 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:36:48,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:36:48,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:36:48,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:36:48,515 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:36:48,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:36:48,516 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:36:48,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:36:48,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:36:48,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:36:48,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:36:48,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:36:48,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:36:48,518 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:36:48,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:36:48,519 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:36:48,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:36:48,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:36:48,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:36:48,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:36:48,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:36:48,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:36:48,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:36:48,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:36:48,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:36:48,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:36:48,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:36:48,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:36:48,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:36:48,521 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:36:48,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:36:49,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:36:49,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:36:49,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:36:49,028 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:36:49,029 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label19.c [2020-09-25 14:36:49,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e750eb7a3/9f3a391a7b6747099aefc4ed6e06e91c/FLAG87ac198a1 [2020-09-25 14:36:49,814 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:36:49,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label19.c [2020-09-25 14:36:49,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e750eb7a3/9f3a391a7b6747099aefc4ed6e06e91c/FLAG87ac198a1 [2020-09-25 14:36:50,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e750eb7a3/9f3a391a7b6747099aefc4ed6e06e91c [2020-09-25 14:36:50,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:36:50,038 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:36:50,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:50,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:36:50,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:36:50,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:50,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@518dc62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50, skipping insertion in model container [2020-09-25 14:36:50,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:50,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:36:50,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:36:50,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:50,589 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:36:50,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:50,919 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:36:50,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50 WrapperNode [2020-09-25 14:36:50,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:50,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:36:50,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:36:50,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:36:50,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:50,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:50,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:50,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:51,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:51,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:51,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:51,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:36:51,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:36:51,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:36:51,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:36:51,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (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 14:36:51,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:36:51,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:36:51,152 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:36:51,152 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:36:51,153 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:36:51,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:36:51,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:36:51,155 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:36:51,156 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:36:51,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:36:51,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:36:52,622 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:36:52,623 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:36:52,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:52 BoogieIcfgContainer [2020-09-25 14:36:52,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:36:52,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:36:52,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:36:52,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:36:52,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:36:50" (1/3) ... [2020-09-25 14:36:52,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77282cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:52, skipping insertion in model container [2020-09-25 14:36:52,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50" (2/3) ... [2020-09-25 14:36:52,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77282cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:52, skipping insertion in model container [2020-09-25 14:36:52,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:52" (3/3) ... [2020-09-25 14:36:52,655 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label19.c [2020-09-25 14:36:52,669 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:36:52,687 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:36:52,712 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:36:52,753 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:36:52,753 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:36:52,753 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:36:52,753 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:36:52,754 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:36:52,754 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:36:52,754 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:36:52,754 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:36:52,786 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:36:52,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 14:36:52,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:52,809 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] [2020-09-25 14:36:52,810 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:52,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:52,819 INFO L82 PathProgramCache]: Analyzing trace with hash 628562263, now seen corresponding path program 1 times [2020-09-25 14:36:52,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:52,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518252636] [2020-09-25 14:36:52,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:53,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:53,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:53,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:53,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:54,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:54,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:57,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:57,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:58,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:58,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 14:36:58,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:36:58,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 14:36:58,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:58,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:36:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:36:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 14:36:58,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:36:58,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:58,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:58,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:58,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:36:58,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:58,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 14:36:58,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:58,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:58,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:58,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:58,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:36:58,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:58,569 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 14:36:58,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518252636] [2020-09-25 14:36:58,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:36:58,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:36:58,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765630659] [2020-09-25 14:36:58,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:36:58,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:58,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:36:58,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:36:58,610 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 14:37:00,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:00,870 INFO L93 Difference]: Finished difference Result 1235 states and 1633 transitions. [2020-09-25 14:37:00,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:37:00,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-09-25 14:37:00,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:00,902 INFO L225 Difference]: With dead ends: 1235 [2020-09-25 14:37:00,902 INFO L226 Difference]: Without dead ends: 661 [2020-09-25 14:37:00,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 14:37:00,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-25 14:37:01,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2020-09-25 14:37:01,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-25 14:37:01,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 715 transitions. [2020-09-25 14:37:01,035 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 715 transitions. Word has length 114 [2020-09-25 14:37:01,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:01,037 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 715 transitions. [2020-09-25 14:37:01,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:37:01,038 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 715 transitions. [2020-09-25 14:37:01,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 14:37:01,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:01,054 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:37:01,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:37:01,055 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:01,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:01,056 INFO L82 PathProgramCache]: Analyzing trace with hash 638143028, now seen corresponding path program 1 times [2020-09-25 14:37:01,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:01,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398046724] [2020-09-25 14:37:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:01,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:01,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:01,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:01,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:02,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:02,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:03,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:03,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:04,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:05,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:06,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 14:37:06,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:37:06,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:37:06,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:06,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:06,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:06,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 14:37:06,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-25 14:37:06,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:06,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:06,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:06,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:06,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:06,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:37:06,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:06,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:06,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:06,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:06,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:06,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:37:06,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:06,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:37:06,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:06,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 14:37:06,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:06,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398046724] [2020-09-25 14:37:06,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:06,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:06,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763499072] [2020-09-25 14:37:06,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:06,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:06,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:06,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:06,336 INFO L87 Difference]: Start difference. First operand 605 states and 715 transitions. Second operand 5 states. [2020-09-25 14:37:08,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:08,350 INFO L93 Difference]: Finished difference Result 1524 states and 1875 transitions. [2020-09-25 14:37:08,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:08,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-09-25 14:37:08,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:08,365 INFO L225 Difference]: With dead ends: 1524 [2020-09-25 14:37:08,365 INFO L226 Difference]: Without dead ends: 943 [2020-09-25 14:37:08,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 14:37:08,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2020-09-25 14:37:08,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 891. [2020-09-25 14:37:08,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 14:37:08,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1072 transitions. [2020-09-25 14:37:08,416 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1072 transitions. Word has length 131 [2020-09-25 14:37:08,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:08,417 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1072 transitions. [2020-09-25 14:37:08,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:08,417 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1072 transitions. [2020-09-25 14:37:08,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 14:37:08,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:08,425 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] [2020-09-25 14:37:08,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:37:08,426 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:08,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:08,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1825258725, now seen corresponding path program 1 times [2020-09-25 14:37:08,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:08,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012939408] [2020-09-25 14:37:08,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:08,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:08,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:08,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:09,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:12,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:13,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:13,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 14:37:13,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:37:13,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 14:37:13,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:13,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:13,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 14:37:13,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 14:37:13,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 14:37:13,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:14,218 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2020-09-25 14:37:14,365 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 38 [2020-09-25 14:37:14,528 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-09-25 14:37:14,685 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 34 [2020-09-25 14:37:14,837 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 32 [2020-09-25 14:37:14,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:14,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:14,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:14,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:14,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:14,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:37:14,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:14,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:14,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:14,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:14,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:14,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:14,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:14,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:15,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:15,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:37:15,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:15,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 14:37:15,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:15,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:37:15,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:15,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:37:15,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:15,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012939408] [2020-09-25 14:37:15,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:15,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 14:37:15,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30281551] [2020-09-25 14:37:15,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 14:37:15,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:15,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 14:37:15,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:37:15,350 INFO L87 Difference]: Start difference. First operand 891 states and 1072 transitions. Second operand 19 states. [2020-09-25 14:37:16,111 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-25 14:37:16,278 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-09-25 14:37:16,751 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2020-09-25 14:37:17,261 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2020-09-25 14:37:17,672 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2020-09-25 14:37:17,855 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-09-25 14:37:18,707 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-25 14:37:19,035 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-09-25 14:37:19,547 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2020-09-25 14:37:19,755 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-09-25 14:37:20,776 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-09-25 14:37:21,217 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-09-25 14:37:21,535 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-09-25 14:37:21,814 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2020-09-25 14:37:22,732 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-09-25 14:37:23,041 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-25 14:37:23,896 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-25 14:37:24,143 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-09-25 14:37:24,888 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-09-25 14:37:25,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:25,814 INFO L93 Difference]: Finished difference Result 2205 states and 2807 transitions. [2020-09-25 14:37:25,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-25 14:37:25,815 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 136 [2020-09-25 14:37:25,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:25,824 INFO L225 Difference]: With dead ends: 2205 [2020-09-25 14:37:25,825 INFO L226 Difference]: Without dead ends: 1338 [2020-09-25 14:37:25,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=682, Invalid=1768, Unknown=0, NotChecked=0, Total=2450 [2020-09-25 14:37:25,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2020-09-25 14:37:25,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1256. [2020-09-25 14:37:25,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1256 states. [2020-09-25 14:37:25,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1431 transitions. [2020-09-25 14:37:25,903 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1431 transitions. Word has length 136 [2020-09-25 14:37:25,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:25,905 INFO L479 AbstractCegarLoop]: Abstraction has 1256 states and 1431 transitions. [2020-09-25 14:37:25,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 14:37:25,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1431 transitions. [2020-09-25 14:37:25,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 14:37:25,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:25,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:25,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:37:25,912 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:25,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:25,912 INFO L82 PathProgramCache]: Analyzing trace with hash -266602264, now seen corresponding path program 1 times [2020-09-25 14:37:25,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:25,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183251682] [2020-09-25 14:37:25,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:25,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:26,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:27,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:27,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:27,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:27,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:30,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:30,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:30,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 14:37:30,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:37:30,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 14:37:30,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:30,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:30,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 14:37:30,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:37:30,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 14:37:30,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:31,449 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-09-25 14:37:31,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:31,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:32,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:32,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:32,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:32,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 14:37:32,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:32,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:32,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:37:32,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:32,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:37:32,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:32,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:32,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:32,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:32,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:32,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:37:32,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:37:32,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-09-25 14:37:32,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:32,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:32,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:32,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:37:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 14:37:32,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:32,676 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:32,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183251682] [2020-09-25 14:37:32,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:32,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 14:37:32,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880971963] [2020-09-25 14:37:32,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 14:37:32,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:32,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 14:37:32,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:37:32,679 INFO L87 Difference]: Start difference. First operand 1256 states and 1431 transitions. Second operand 17 states. [2020-09-25 14:37:35,749 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-09-25 14:37:35,993 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-25 14:37:36,709 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-09-25 14:37:37,701 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-09-25 14:37:38,301 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75