/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/Problem02_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:15:11,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:15:11,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:15:12,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:15:12,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:15:12,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:15:12,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:15:12,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:15:12,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:15:12,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:15:12,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:15:12,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:15:12,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:15:12,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:15:12,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:15:12,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:15:12,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:15:12,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:15:12,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:15:12,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:15:12,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:15:12,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:15:12,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:15:12,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:15:12,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:15:12,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:15:12,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:15:12,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:15:12,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:15:12,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:15:12,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:15:12,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:15:12,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:15:12,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:15:12,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:15:12,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:15:12,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:15:12,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:15:12,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:15:12,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:15:12,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:15:12,047 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 11:15:12,075 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:15:12,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:15:12,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:15:12,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:15:12,077 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:15:12,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:15:12,078 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:15:12,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:15:12,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:15:12,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:15:12,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:15:12,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:15:12,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:15:12,079 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:15:12,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:15:12,080 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:15:12,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:15:12,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:15:12,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:15:12,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:15:12,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:15:12,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:15:12,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:15:12,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:15:12,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:15:12,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:15:12,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:15:12,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:15:12,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:15:12,083 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 11:15:12,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:15:12,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:15:12,562 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:15:12,564 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:15:12,564 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:15:12,565 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label00.c [2020-09-25 11:15:12,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9fe69d2f/93a686bc603c4c179cad53bda408e8bd/FLAG40184fd3e [2020-09-25 11:15:13,363 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:15:13,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label00.c [2020-09-25 11:15:13,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9fe69d2f/93a686bc603c4c179cad53bda408e8bd/FLAG40184fd3e [2020-09-25 11:15:13,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9fe69d2f/93a686bc603c4c179cad53bda408e8bd [2020-09-25 11:15:13,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:15:13,685 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:15:13,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:15:13,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:15:13,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:15:13,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:15:13" (1/1) ... [2020-09-25 11:15:13,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@632ac694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:13, skipping insertion in model container [2020-09-25 11:15:13,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:15:13" (1/1) ... [2020-09-25 11:15:13,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:15:13,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:15:14,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:15:14,320 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:15:14,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:15:14,506 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:15:14,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:14 WrapperNode [2020-09-25 11:15:14,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:15:14,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:15:14,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:15:14,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:15:14,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:14" (1/1) ... [2020-09-25 11:15:14,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:14" (1/1) ... [2020-09-25 11:15:14,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:14" (1/1) ... [2020-09-25 11:15:14,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:14" (1/1) ... [2020-09-25 11:15:14,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:14" (1/1) ... [2020-09-25 11:15:14,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:14" (1/1) ... [2020-09-25 11:15:14,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:14" (1/1) ... [2020-09-25 11:15:14,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:15:14,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:15:14,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:15:14,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:15:14,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:14" (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 11:15:14,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:15:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:15:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:15:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:15:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:15:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:15:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:15:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:15:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:15:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:15:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:15:16,082 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:15:16,082 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:15:16,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:15:16 BoogieIcfgContainer [2020-09-25 11:15:16,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:15:16,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:15:16,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:15:16,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:15:16,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:15:13" (1/3) ... [2020-09-25 11:15:16,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d35fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:15:16, skipping insertion in model container [2020-09-25 11:15:16,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:14" (2/3) ... [2020-09-25 11:15:16,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d35fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:15:16, skipping insertion in model container [2020-09-25 11:15:16,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:15:16" (3/3) ... [2020-09-25 11:15:16,116 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label00.c [2020-09-25 11:15:16,128 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:15:16,146 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:15:16,168 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:15:16,204 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:15:16,204 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:15:16,204 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:15:16,204 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:15:16,205 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:15:16,205 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:15:16,205 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:15:16,205 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:15:16,239 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:15:16,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 11:15:16,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:16,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:15:16,263 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:16,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:16,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1323495626, now seen corresponding path program 1 times [2020-09-25 11:15:16,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:16,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158332529] [2020-09-25 11:15:16,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:16,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:17,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:17,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:18,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:18,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:19,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:21,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:21,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:21,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:21,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 11:15:21,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:15:21,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 11:15:21,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:21,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:21,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:15:21,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:15:21,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 11:15:21,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:15:21,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:21,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:21,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:21,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:21,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:21,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 11:15:21,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:21,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:21,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:21,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:21,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:15:21,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:21,826 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 11:15:21,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158332529] [2020-09-25 11:15:21,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:15:21,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:15:21,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536182068] [2020-09-25 11:15:21,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:15:21,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:21,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:15:21,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:15:21,858 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:15:24,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:24,299 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 11:15:24,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:15:24,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-09-25 11:15:24,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:24,333 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 11:15:24,333 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 11:15:24,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:15:24,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 11:15:24,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 11:15:24,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 11:15:24,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 11:15:24,462 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 141 [2020-09-25 11:15:24,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:24,463 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 11:15:24,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:15:24,464 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 11:15:24,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 11:15:24,473 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:24,473 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, 1, 1, 1, 1, 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 11:15:24,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:15:24,474 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:24,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:24,474 INFO L82 PathProgramCache]: Analyzing trace with hash -427811082, now seen corresponding path program 1 times [2020-09-25 11:15:24,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:24,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494174602] [2020-09-25 11:15:24,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:24,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:24,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:24,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:25,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:27,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:27,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:27,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:28,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:28,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:29,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:29,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 11:15:29,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:15:29,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 11:15:29,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:29,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 11:15:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 11:15:29,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:29,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:29,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:29,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:29,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:29,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:29,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:15:29,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:29,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:29,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:29,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:29,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:29,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 11:15:29,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:15:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:29,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:29,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:29,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:15:29,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:29,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:15:29,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:29,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:29,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:29,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:29,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:15:29,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:29,799 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 11:15:29,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494174602] [2020-09-25 11:15:29,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:29,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:15:29,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288558440] [2020-09-25 11:15:29,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:15:29,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:29,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:15:29,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:15:29,805 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 11:15:32,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:32,236 INFO L93 Difference]: Finished difference Result 1806 states and 2276 transitions. [2020-09-25 11:15:32,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:15:32,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-25 11:15:32,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:32,248 INFO L225 Difference]: With dead ends: 1806 [2020-09-25 11:15:32,248 INFO L226 Difference]: Without dead ends: 1095 [2020-09-25 11:15:32,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 11:15:32,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2020-09-25 11:15:32,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1039. [2020-09-25 11:15:32,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 11:15:32,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1246 transitions. [2020-09-25 11:15:32,304 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1246 transitions. Word has length 159 [2020-09-25 11:15:32,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:32,305 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1246 transitions. [2020-09-25 11:15:32,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:15:32,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1246 transitions. [2020-09-25 11:15:32,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 11:15:32,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:32,310 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:15:32,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:15:32,311 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:32,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:32,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1532325973, now seen corresponding path program 1 times [2020-09-25 11:15:32,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:32,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289783246] [2020-09-25 11:15:32,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:32,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:32,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:32,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:32,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:34,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:34,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:34,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:37,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:37,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 11:15:37,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:15:37,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 11:15:37,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:37,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:37,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:37,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 11:15:37,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 11:15:37,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:37,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:37,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:37,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:37,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:37,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:37,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:15:37,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:37,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:37,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:37,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:37,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:37,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:15:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:37,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:37,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:37,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:15:37,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:37,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:15:37,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:37,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:37,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:37,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:15:37,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:15:37,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289783246] [2020-09-25 11:15:37,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:37,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:15:37,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922223744] [2020-09-25 11:15:37,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:15:37,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:37,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:15:37,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:15:37,669 INFO L87 Difference]: Start difference. First operand 1039 states and 1246 transitions. Second operand 6 states. [2020-09-25 11:15:39,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:39,798 INFO L93 Difference]: Finished difference Result 2678 states and 3328 transitions. [2020-09-25 11:15:39,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:15:39,799 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-09-25 11:15:39,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:39,810 INFO L225 Difference]: With dead ends: 2678 [2020-09-25 11:15:39,811 INFO L226 Difference]: Without dead ends: 1661 [2020-09-25 11:15:39,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:15:39,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2020-09-25 11:15:39,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1488. [2020-09-25 11:15:39,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2020-09-25 11:15:39,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1838 transitions. [2020-09-25 11:15:39,894 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1838 transitions. Word has length 165 [2020-09-25 11:15:39,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:39,897 INFO L479 AbstractCegarLoop]: Abstraction has 1488 states and 1838 transitions. [2020-09-25 11:15:39,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:15:39,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1838 transitions. [2020-09-25 11:15:39,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 11:15:39,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:39,905 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:15:39,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:15:39,909 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:39,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:39,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1927343599, now seen corresponding path program 1 times [2020-09-25 11:15:39,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:39,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779291323] [2020-09-25 11:15:39,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:39,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:40,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:40,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:41,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:43,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:43,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:44,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:44,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 11:15:44,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:15:44,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:15:44,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:44,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:44,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 11:15:44,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 11:15:44,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:15:45,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:45,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:45,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:45,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:45,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:45,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:15:45,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:45,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:45,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:45,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:45,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:45,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:45,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:15:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:45,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:45,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:45,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:15:45,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:45,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 11:15:45,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:45,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:45,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:15:45,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:45,200 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:15:45,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779291323] [2020-09-25 11:15:45,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:45,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:15:45,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563116443] [2020-09-25 11:15:45,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:15:45,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:45,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:15:45,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:15:45,204 INFO L87 Difference]: Start difference. First operand 1488 states and 1838 transitions. Second operand 5 states. [2020-09-25 11:15:47,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:47,368 INFO L93 Difference]: Finished difference Result 3464 states and 4472 transitions. [2020-09-25 11:15:47,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:15:47,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-09-25 11:15:47,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:47,385 INFO L225 Difference]: With dead ends: 3464 [2020-09-25 11:15:47,385 INFO L226 Difference]: Without dead ends: 1998 [2020-09-25 11:15:47,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 11:15:47,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2020-09-25 11:15:47,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1949. [2020-09-25 11:15:47,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1949 states. [2020-09-25 11:15:47,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 2379 transitions. [2020-09-25 11:15:47,469 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 2379 transitions. Word has length 175 [2020-09-25 11:15:47,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:47,469 INFO L479 AbstractCegarLoop]: Abstraction has 1949 states and 2379 transitions. [2020-09-25 11:15:47,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:15:47,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 2379 transitions. [2020-09-25 11:15:47,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 11:15:47,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:47,478 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:15:47,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:15:47,478 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:47,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:47,479 INFO L82 PathProgramCache]: Analyzing trace with hash 482825858, now seen corresponding path program 1 times [2020-09-25 11:15:47,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:47,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121021767] [2020-09-25 11:15:47,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:47,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:47,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:48,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:48,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:48,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:48,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:52,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:52,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 11:15:52,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:15:52,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 11:15:52,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:52,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:52,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:52,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 11:15:52,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 11:15:52,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:15:52,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:52,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:52,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:52,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:52,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:52,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:15:52,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:52,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:52,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:52,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:52,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:52,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:52,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:15:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:52,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:52,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:52,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:15:52,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:52,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 11:15:52,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:52,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:52,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:52,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:52,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:15:52,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:15:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:15:52,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121021767] [2020-09-25 11:15:52,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:52,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:15:52,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124778798] [2020-09-25 11:15:52,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:15:52,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:52,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:15:52,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:15:52,784 INFO L87 Difference]: Start difference. First operand 1949 states and 2379 transitions. Second operand 5 states. [2020-09-25 11:15:55,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:55,350 INFO L93 Difference]: Finished difference Result 5110 states and 6477 transitions. [2020-09-25 11:15:55,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:15:55,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-09-25 11:15:55,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:55,371 INFO L225 Difference]: With dead ends: 5110 [2020-09-25 11:15:55,371 INFO L226 Difference]: Without dead ends: 3183 [2020-09-25 11:15:55,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 11:15:55,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2020-09-25 11:15:55,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 2730. [2020-09-25 11:15:55,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2730 states. [2020-09-25 11:15:55,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 3393 transitions. [2020-09-25 11:15:55,465 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 3393 transitions. Word has length 179 [2020-09-25 11:15:55,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:55,466 INFO L479 AbstractCegarLoop]: Abstraction has 2730 states and 3393 transitions. [2020-09-25 11:15:55,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:15:55,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 3393 transitions. [2020-09-25 11:15:55,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-09-25 11:15:55,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:55,479 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:15:55,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:15:55,479 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:55,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:55,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1193444011, now seen corresponding path program 1 times [2020-09-25 11:15:55,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:55,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499369566] [2020-09-25 11:15:55,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:55,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:55,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:55,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:56,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:57,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:58,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:00,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:00,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-25 11:16:00,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:16:00,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:16:00,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:00,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:00,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:16:00,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 11:16:00,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-09-25 11:16:00,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:16:00,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:00,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:00,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:00,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:00,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:16:00,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:00,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:00,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:16:00,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:00,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:16:00,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:16:00,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:00,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:00,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:00,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:16:00,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:00,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:16:00,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:00,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:00,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:00,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:00,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:16:00,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:16:00,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 11:16:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:00,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:00,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:00,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:00,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 11:16:00,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:16:00,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 11:16:00,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:00,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:00,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:16:00,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:16:00,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 11:16:00,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:16:00,945 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 28 proven. 72 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:16:00,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499369566] [2020-09-25 11:16:00,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:16:00,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:16:00,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386374146] [2020-09-25 11:16:00,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:16:00,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:00,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:16:00,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:16:00,947 INFO L87 Difference]: Start difference. First operand 2730 states and 3393 transitions. Second operand 7 states. [2020-09-25 11:16:04,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:04,518 INFO L93 Difference]: Finished difference Result 8763 states and 11627 transitions. [2020-09-25 11:16:04,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:16:04,518 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-09-25 11:16:04,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:04,519 INFO L225 Difference]: With dead ends: 8763 [2020-09-25 11:16:04,519 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 11:16:04,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:16:04,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 11:16:04,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 11:16:04,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 11:16:04,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 11:16:04,554 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 250 [2020-09-25 11:16:04,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:04,554 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 11:16:04,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:16:04,554 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 11:16:04,554 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 11:16:04,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:16:04,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.