/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_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:19:50,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:19:50,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:19:50,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:19:50,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:19:50,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:19:50,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:19:50,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:19:50,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:19:50,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:19:50,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:19:50,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:19:50,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:19:50,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:19:50,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:19:50,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:19:50,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:19:50,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:19:50,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:19:50,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:19:50,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:19:50,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:19:50,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:19:50,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:19:50,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:19:50,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:19:50,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:19:50,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:19:50,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:19:50,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:19:50,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:19:50,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:19:50,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:19:50,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:19:50,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:19:50,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:19:50,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:19:50,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:19:50,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:19:50,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:19:50,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:19:50,103 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 11:19:50,129 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:19:50,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:19:50,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:19:50,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:19:50,131 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:19:50,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:19:50,132 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:19:50,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:19:50,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:19:50,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:19:50,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:19:50,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:19:50,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:19:50,133 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:19:50,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:19:50,134 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:19:50,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:19:50,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:19:50,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:19:50,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:19:50,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:19:50,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:19:50,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:19:50,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:19:50,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:19:50,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:19:50,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:19:50,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:19:50,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:19:50,137 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 11:19:50,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:19:50,614 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:19:50,619 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:19:50,621 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:19:50,623 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:19:50,625 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-09-25 11:19:50,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bbc30d87/45284ec580284daab9336cca321bdff6/FLAG90444245a [2020-09-25 11:19:51,403 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:19:51,404 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-09-25 11:19:51,421 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bbc30d87/45284ec580284daab9336cca321bdff6/FLAG90444245a [2020-09-25 11:19:51,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bbc30d87/45284ec580284daab9336cca321bdff6 [2020-09-25 11:19:51,597 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:19:51,603 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:19:51,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:51,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:19:51,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:19:51,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:51" (1/1) ... [2020-09-25 11:19:51,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51d7e22e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:51, skipping insertion in model container [2020-09-25 11:19:51,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:51" (1/1) ... [2020-09-25 11:19:51,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:19:51,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:19:52,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:52,186 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:19:52,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:52,416 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:19:52,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:52 WrapperNode [2020-09-25 11:19:52,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:52,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:19:52,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:19:52,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:19:52,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:52" (1/1) ... [2020-09-25 11:19:52,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:52" (1/1) ... [2020-09-25 11:19:52,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:52" (1/1) ... [2020-09-25 11:19:52,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:52" (1/1) ... [2020-09-25 11:19:52,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:52" (1/1) ... [2020-09-25 11:19:52,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:52" (1/1) ... [2020-09-25 11:19:52,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:52" (1/1) ... [2020-09-25 11:19:52,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:19:52,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:19:52,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:19:52,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:19:52,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:52" (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 11:19:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:19:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:19:52,634 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:19:52,634 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:19:52,634 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:19:52,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:19:52,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:19:52,636 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:19:52,636 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:19:52,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:19:52,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:19:54,151 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:19:54,151 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:19:54,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:54 BoogieIcfgContainer [2020-09-25 11:19:54,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:19:54,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:19:54,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:19:54,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:19:54,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:19:51" (1/3) ... [2020-09-25 11:19:54,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5485bd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:54, skipping insertion in model container [2020-09-25 11:19:54,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:52" (2/3) ... [2020-09-25 11:19:54,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5485bd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:54, skipping insertion in model container [2020-09-25 11:19:54,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:54" (3/3) ... [2020-09-25 11:19:54,171 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label45.c [2020-09-25 11:19:54,186 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:19:54,204 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:19:54,228 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:19:54,277 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:19:54,278 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:19:54,278 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:19:54,278 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:19:54,278 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:19:54,278 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:19:54,279 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:19:54,279 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:19:54,320 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:19:54,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 11:19:54,332 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:54,334 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] [2020-09-25 11:19:54,335 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:54,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:54,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1037847345, now seen corresponding path program 1 times [2020-09-25 11:19:54,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:54,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088718078] [2020-09-25 11:19:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:54,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:54,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:55,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:55,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:55,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 11:19:55,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:19:55,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1018 [2020-09-25 11:19:55,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:55,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:55,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:55,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:55,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 11:19:55,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:19:55,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:55,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:55,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:55,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:55,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:55,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:19:55,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:55,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:55,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:55,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:55,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:55,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:55,753 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 11:19:55,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088718078] [2020-09-25 11:19:55,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:55,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:19:55,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078253064] [2020-09-25 11:19:55,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:19:55,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:55,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:19:55,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:19:55,793 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:19:57,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:57,863 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 11:19:57,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:19:57,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-09-25 11:19:57,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:57,889 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 11:19:57,890 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 11:19:57,902 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 11:19:57,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 11:19:57,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 11:19:57,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 11:19:58,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 11:19:58,003 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 57 [2020-09-25 11:19:58,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:58,003 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 11:19:58,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:19:58,004 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 11:19:58,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 11:19:58,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:58,012 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:58,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:19:58,013 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:58,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:58,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1358485705, now seen corresponding path program 1 times [2020-09-25 11:19:58,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:58,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127632790] [2020-09-25 11:19:58,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:58,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:58,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:58,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:58,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:58,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:59,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:03,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:03,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 11:20:03,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:03,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:20:03,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:03,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:03,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:20:03,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:20:03,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 11:20:03,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:20:03,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:03,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:03,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:03,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:03,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:03,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:20:03,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:03,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:03,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:03,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:03,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:20:03,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:03,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:03,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:03,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:03,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:03,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:20:03,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:03,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-09-25 11:20:03,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:03,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 11:20:03,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:03,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127632790] [2020-09-25 11:20:03,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:03,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:20:03,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908078154] [2020-09-25 11:20:03,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:20:03,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:03,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:20:03,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:20:03,821 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 9 states. [2020-09-25 11:20:07,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:07,719 INFO L93 Difference]: Finished difference Result 1663 states and 2148 transitions. [2020-09-25 11:20:07,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:20:07,724 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 140 [2020-09-25 11:20:07,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:07,731 INFO L225 Difference]: With dead ends: 1663 [2020-09-25 11:20:07,731 INFO L226 Difference]: Without dead ends: 1083 [2020-09-25 11:20:07,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:20:07,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2020-09-25 11:20:07,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1032. [2020-09-25 11:20:07,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-09-25 11:20:07,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1253 transitions. [2020-09-25 11:20:07,776 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1253 transitions. Word has length 140 [2020-09-25 11:20:07,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:07,777 INFO L479 AbstractCegarLoop]: Abstraction has 1032 states and 1253 transitions. [2020-09-25 11:20:07,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:20:07,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1253 transitions. [2020-09-25 11:20:07,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 11:20:07,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:07,782 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:07,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:20:07,783 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:07,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:07,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1711199918, now seen corresponding path program 1 times [2020-09-25 11:20:07,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:07,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502120899] [2020-09-25 11:20:07,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:07,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:09,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:12,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:12,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 11:20:12,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:20:12,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4685 [2020-09-25 11:20:12,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:12,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:12,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:20:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:20:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 11:20:12,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:12,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:12,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:12,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:12,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:12,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:12,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:20:12,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:12,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:12,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:12,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:12,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:20:12,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:12,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:12,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:12,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:12,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:12,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:20:12,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:12,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 11:20:12,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:12,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 11:20:12,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:20:12,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502120899] [2020-09-25 11:20:12,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:12,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:20:12,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339962274] [2020-09-25 11:20:12,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:20:12,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:12,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:20:12,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:20:12,949 INFO L87 Difference]: Start difference. First operand 1032 states and 1253 transitions. Second operand 5 states. [2020-09-25 11:20:14,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:14,683 INFO L93 Difference]: Finished difference Result 1652 states and 2083 transitions. [2020-09-25 11:20:14,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:20:14,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 11:20:14,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:14,699 INFO L225 Difference]: With dead ends: 1652 [2020-09-25 11:20:14,700 INFO L226 Difference]: Without dead ends: 1650 [2020-09-25 11:20:14,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:20:14,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2020-09-25 11:20:14,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1190. [2020-09-25 11:20:14,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2020-09-25 11:20:14,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1499 transitions. [2020-09-25 11:20:14,765 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1499 transitions. Word has length 140 [2020-09-25 11:20:14,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:14,767 INFO L479 AbstractCegarLoop]: Abstraction has 1190 states and 1499 transitions. [2020-09-25 11:20:14,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:20:14,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1499 transitions. [2020-09-25 11:20:14,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 11:20:14,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:14,773 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:14,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:20:14,774 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:14,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:14,774 INFO L82 PathProgramCache]: Analyzing trace with hash -861467326, now seen corresponding path program 1 times [2020-09-25 11:20:14,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:14,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721317870] [2020-09-25 11:20:14,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:14,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:14,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:15,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:15,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:15,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:16,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:19,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:19,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 11:20:19,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:19,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4409 [2020-09-25 11:20:19,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:19,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:19,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:19,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:19,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 11:20:19,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:19,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:19,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:19,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:19,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:19,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:19,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:20:19,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:19,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:19,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:19,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:19,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:19,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:19,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:19,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:19,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:19,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 11:20:19,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:19,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:19,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:20:19,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:19,593 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:19,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721317870] [2020-09-25 11:20:19,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:19,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:20:19,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286320030] [2020-09-25 11:20:19,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:20:19,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:19,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:20:19,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:20:19,599 INFO L87 Difference]: Start difference. First operand 1190 states and 1499 transitions. Second operand 8 states. [2020-09-25 11:20:22,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:22,916 INFO L93 Difference]: Finished difference Result 3282 states and 4390 transitions. [2020-09-25 11:20:22,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:20:22,920 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 146 [2020-09-25 11:20:22,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:22,943 INFO L225 Difference]: With dead ends: 3282 [2020-09-25 11:20:22,943 INFO L226 Difference]: Without dead ends: 2107 [2020-09-25 11:20:22,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:20:22,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2107 states. [2020-09-25 11:20:23,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2107 to 1855. [2020-09-25 11:20:23,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1855 states. [2020-09-25 11:20:23,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 2468 transitions. [2020-09-25 11:20:23,041 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 2468 transitions. Word has length 146 [2020-09-25 11:20:23,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:23,042 INFO L479 AbstractCegarLoop]: Abstraction has 1855 states and 2468 transitions. [2020-09-25 11:20:23,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:20:23,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 2468 transitions. [2020-09-25 11:20:23,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 11:20:23,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:23,047 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:23,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:20:23,048 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:23,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:23,048 INFO L82 PathProgramCache]: Analyzing trace with hash -425133554, now seen corresponding path program 1 times [2020-09-25 11:20:23,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:23,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025897736] [2020-09-25 11:20:23,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:23,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:23,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:24,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:24,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:24,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:25,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:27,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:27,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 11:20:27,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:27,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4475 [2020-09-25 11:20:27,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:27,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:27,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:27,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:20:27,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 11:20:27,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:27,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:27,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:27,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:27,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:27,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:27,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:20:27,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:27,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:27,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:20:27,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:27,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:27,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:28,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:28,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:28,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 11:20:28,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:28,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-09-25 11:20:28,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:28,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:28,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:28,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:28,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 11:20:28,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:28,406 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:28,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025897736] [2020-09-25 11:20:28,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:28,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:20:28,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033531121] [2020-09-25 11:20:28,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:20:28,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:28,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:20:28,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:20:28,412 INFO L87 Difference]: Start difference. First operand 1855 states and 2468 transitions. Second operand 11 states. [2020-09-25 11:20:32,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:32,258 INFO L93 Difference]: Finished difference Result 4428 states and 6020 transitions. [2020-09-25 11:20:32,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:20:32,259 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 165 [2020-09-25 11:20:32,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:32,274 INFO L225 Difference]: With dead ends: 4428 [2020-09-25 11:20:32,274 INFO L226 Difference]: Without dead ends: 2692 [2020-09-25 11:20:32,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:20:32,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2020-09-25 11:20:32,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 2501. [2020-09-25 11:20:32,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2501 states. [2020-09-25 11:20:32,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2501 states to 2501 states and 3328 transitions. [2020-09-25 11:20:32,365 INFO L78 Accepts]: Start accepts. Automaton has 2501 states and 3328 transitions. Word has length 165 [2020-09-25 11:20:32,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:32,365 INFO L479 AbstractCegarLoop]: Abstraction has 2501 states and 3328 transitions. [2020-09-25 11:20:32,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:20:32,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2501 states and 3328 transitions. [2020-09-25 11:20:32,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 11:20:32,370 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:32,370 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:32,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:20:32,371 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:32,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:32,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1882471934, now seen corresponding path program 1 times [2020-09-25 11:20:32,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:32,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497967742] [2020-09-25 11:20:32,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:32,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:32,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:32,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:34,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:35,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:37,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:37,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 11:20:37,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:20:37,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4673 [2020-09-25 11:20:37,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:37,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:37,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:37,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:20:37,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 11:20:37,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:37,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:37,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:37,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:37,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:37,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:37,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:20:37,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:37,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:37,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:20:37,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:37,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:37,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:37,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:37,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 11:20:37,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:37,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 11:20:37,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:37,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:37,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:37,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:37,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 11:20:37,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:37,559 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:37,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497967742] [2020-09-25 11:20:37,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:37,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 11:20:37,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574934721] [2020-09-25 11:20:37,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:20:37,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:37,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:20:37,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:20:37,563 INFO L87 Difference]: Start difference. First operand 2501 states and 3328 transitions. Second operand 8 states. [2020-09-25 11:20:40,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:40,758 INFO L93 Difference]: Finished difference Result 7540 states and 10785 transitions. [2020-09-25 11:20:40,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:20:40,759 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 179 [2020-09-25 11:20:40,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:40,785 INFO L225 Difference]: With dead ends: 7540 [2020-09-25 11:20:40,785 INFO L226 Difference]: Without dead ends: 5054 [2020-09-25 11:20:40,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:20:40,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5054 states.