/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_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:20:01,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:20:01,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:20:01,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:20:01,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:20:01,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:20:01,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:20:01,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:20:01,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:20:01,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:20:01,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:20:01,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:20:01,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:20:01,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:20:01,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:20:01,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:20:01,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:20:01,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:20:01,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:20:01,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:20:01,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:20:01,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:20:01,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:20:01,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:20:01,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:20:01,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:20:01,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:20:01,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:20:01,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:20:02,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:20:02,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:20:02,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:20:02,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:20:02,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:20:02,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:20:02,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:20:02,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:20:02,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:20:02,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:20:02,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:20:02,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:20:02,020 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 11:20:02,071 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:20:02,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:20:02,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:20:02,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:20:02,074 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:20:02,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:20:02,075 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:20:02,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:20:02,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:20:02,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:20:02,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:20:02,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:20:02,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:20:02,078 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:20:02,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:20:02,078 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:20:02,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:20:02,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:20:02,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:20:02,079 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:20:02,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:20:02,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:20:02,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:20:02,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:20:02,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:20:02,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:20:02,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:20:02,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:20:02,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:20:02,081 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 11:20:02,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:20:02,601 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:20:02,606 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:20:02,607 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:20:02,608 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:20:02,609 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-09-25 11:20:02,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/12ac2e5ec/e855064081154a62b3183772867adca4/FLAG73b311e6b [2020-09-25 11:20:03,388 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:20:03,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-09-25 11:20:03,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/12ac2e5ec/e855064081154a62b3183772867adca4/FLAG73b311e6b [2020-09-25 11:20:03,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/12ac2e5ec/e855064081154a62b3183772867adca4 [2020-09-25 11:20:03,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:20:03,657 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:20:03,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:20:03,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:20:03,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:20:03,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:20:03" (1/1) ... [2020-09-25 11:20:03,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44fd9ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:03, skipping insertion in model container [2020-09-25 11:20:03,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:20:03" (1/1) ... [2020-09-25 11:20:03,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:20:03,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:20:04,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:20:04,233 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:20:04,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:20:04,488 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:20:04,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:04 WrapperNode [2020-09-25 11:20:04,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:20:04,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:20:04,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:20:04,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:20:04,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:04" (1/1) ... [2020-09-25 11:20:04,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:04" (1/1) ... [2020-09-25 11:20:04,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:04" (1/1) ... [2020-09-25 11:20:04,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:04" (1/1) ... [2020-09-25 11:20:04,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:04" (1/1) ... [2020-09-25 11:20:04,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:04" (1/1) ... [2020-09-25 11:20:04,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:04" (1/1) ... [2020-09-25 11:20:04,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:20:04,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:20:04,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:20:04,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:20:04,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:04" (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 11:20:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:20:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:20:04,739 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:20:04,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:20:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:20:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:20:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:20:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:20:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:20:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:20:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:20:06,228 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:20:06,229 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:20:06,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:06 BoogieIcfgContainer [2020-09-25 11:20:06,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:20:06,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:20:06,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:20:06,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:20:06,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:20:03" (1/3) ... [2020-09-25 11:20:06,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591c2c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:06, skipping insertion in model container [2020-09-25 11:20:06,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:04" (2/3) ... [2020-09-25 11:20:06,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591c2c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:06, skipping insertion in model container [2020-09-25 11:20:06,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:06" (3/3) ... [2020-09-25 11:20:06,249 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label53.c [2020-09-25 11:20:06,262 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:20:06,275 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:20:06,303 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:20:06,345 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:20:06,346 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:20:06,346 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:20:06,346 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:20:06,346 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:20:06,347 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:20:06,347 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:20:06,347 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:20:06,384 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:20:06,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 11:20:06,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:06,398 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] [2020-09-25 11:20:06,399 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:06,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:06,409 INFO L82 PathProgramCache]: Analyzing trace with hash -193504545, now seen corresponding path program 1 times [2020-09-25 11:20:06,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:06,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028892150] [2020-09-25 11:20:06,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:06,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:06,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:06,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:08,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 11:20:08,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:20:08,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1424 [2020-09-25 11:20:08,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:08,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:08,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:20:08,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 11:20:08,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:20:08,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:08,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:08,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:08,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:08,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:20:08,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:08,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:08,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:08,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:08,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:20:08,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:08,331 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 11:20:08,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028892150] [2020-09-25 11:20:08,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:08,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:20:08,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744285941] [2020-09-25 11:20:08,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:20:08,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:08,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:20:08,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:20:08,368 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 11:20:11,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:11,103 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 11:20:11,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:20:11,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-09-25 11:20:11,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:11,132 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 11:20:11,132 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 11:20:11,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:20:11,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 11:20:11,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 11:20:11,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 11:20:11,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 11:20:11,274 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 61 [2020-09-25 11:20:11,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:11,275 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 11:20:11,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:20:11,275 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 11:20:11,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 11:20:11,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:11,285 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, 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] [2020-09-25 11:20:11,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:20:11,286 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:11,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:11,287 INFO L82 PathProgramCache]: Analyzing trace with hash 75508103, now seen corresponding path program 1 times [2020-09-25 11:20:11,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:11,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067203897] [2020-09-25 11:20:11,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:11,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:12,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:12,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:12,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:16,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:16,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 11:20:16,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:16,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 11:20:16,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:16,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:16,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:20:16,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:20:16,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 11:20:16,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:16,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:16,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:16,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:16,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:16,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:16,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:20:16,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:16,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:16,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:16,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:16,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:20:16,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:16,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:16,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:16,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:16,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:16,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:20:16,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:16,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-09-25 11:20:16,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:16,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:20:16,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:17,129 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:17,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067203897] [2020-09-25 11:20:17,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:17,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:20:17,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107999535] [2020-09-25 11:20:17,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:20:17,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:17,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:20:17,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:20:17,134 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 10 states. [2020-09-25 11:20:20,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:20,730 INFO L93 Difference]: Finished difference Result 2046 states and 2862 transitions. [2020-09-25 11:20:20,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:20:20,731 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 144 [2020-09-25 11:20:20,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:20,744 INFO L225 Difference]: With dead ends: 2046 [2020-09-25 11:20:20,744 INFO L226 Difference]: Without dead ends: 1347 [2020-09-25 11:20:20,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:20:20,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2020-09-25 11:20:20,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1004. [2020-09-25 11:20:20,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1004 states. [2020-09-25 11:20:20,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1290 transitions. [2020-09-25 11:20:20,824 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1290 transitions. Word has length 144 [2020-09-25 11:20:20,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:20,827 INFO L479 AbstractCegarLoop]: Abstraction has 1004 states and 1290 transitions. [2020-09-25 11:20:20,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:20:20,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1290 transitions. [2020-09-25 11:20:20,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 11:20:20,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:20,842 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, 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] [2020-09-25 11:20:20,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:20:20,844 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:20,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:20,845 INFO L82 PathProgramCache]: Analyzing trace with hash 118153746, now seen corresponding path program 1 times [2020-09-25 11:20:20,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:20,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693236520] [2020-09-25 11:20:20,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:21,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:21,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:21,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:22,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:22,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:23,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:25,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:25,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 11:20:25,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:20:25,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4284 [2020-09-25 11:20:25,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:25,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:25,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:25,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:25,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-25 11:20:25,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:20:25,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:25,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:25,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:25,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:25,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:25,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:20:25,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:25,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:25,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:25,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:25,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:25,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:25,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:25,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:25,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:25,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:25,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:25,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 11:20:25,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:25,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:25,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:25,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:25,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:20:25,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:25,648 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:25,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693236520] [2020-09-25 11:20:25,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:25,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:20:25,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983775166] [2020-09-25 11:20:25,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:20:25,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:25,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:20:25,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:20:25,653 INFO L87 Difference]: Start difference. First operand 1004 states and 1290 transitions. Second operand 8 states. [2020-09-25 11:20:28,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:28,872 INFO L93 Difference]: Finished difference Result 2570 states and 3399 transitions. [2020-09-25 11:20:28,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:20:28,873 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 150 [2020-09-25 11:20:28,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:28,883 INFO L225 Difference]: With dead ends: 2570 [2020-09-25 11:20:28,884 INFO L226 Difference]: Without dead ends: 1581 [2020-09-25 11:20:28,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:20:28,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2020-09-25 11:20:28,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1353. [2020-09-25 11:20:28,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1353 states. [2020-09-25 11:20:28,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 1727 transitions. [2020-09-25 11:20:28,943 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 1727 transitions. Word has length 150 [2020-09-25 11:20:28,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:28,944 INFO L479 AbstractCegarLoop]: Abstraction has 1353 states and 1727 transitions. [2020-09-25 11:20:28,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:20:28,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 1727 transitions. [2020-09-25 11:20:28,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 11:20:28,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:28,948 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, 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] [2020-09-25 11:20:28,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:20:28,949 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:28,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:28,949 INFO L82 PathProgramCache]: Analyzing trace with hash -403760050, now seen corresponding path program 1 times [2020-09-25 11:20:28,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:28,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417441881] [2020-09-25 11:20:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:29,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:29,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:29,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:32,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:32,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:34,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:34,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 11:20:34,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:20:34,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 11:20:34,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:34,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:34,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:34,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:20:34,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 11:20:34,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:34,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:34,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:34,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:34,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:34,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:34,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:20:34,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:34,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:34,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:34,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:34,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:20:34,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:34,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:34,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:34,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:34,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 11:20:34,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:34,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 11:20:34,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:34,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:34,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:34,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:34,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 11:20:34,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:34,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417441881] [2020-09-25 11:20:34,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:34,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 11:20:34,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343723893] [2020-09-25 11:20:34,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:20:34,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:34,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:20:34,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:20:34,503 INFO L87 Difference]: Start difference. First operand 1353 states and 1727 transitions. Second operand 8 states. [2020-09-25 11:20:37,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:37,861 INFO L93 Difference]: Finished difference Result 4129 states and 5713 transitions. [2020-09-25 11:20:37,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:20:37,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 183 [2020-09-25 11:20:37,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:37,877 INFO L225 Difference]: With dead ends: 4129 [2020-09-25 11:20:37,878 INFO L226 Difference]: Without dead ends: 2791 [2020-09-25 11:20:37,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:20:37,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2020-09-25 11:20:37,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2271. [2020-09-25 11:20:37,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2271 states. [2020-09-25 11:20:37,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 2939 transitions. [2020-09-25 11:20:37,990 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 2939 transitions. Word has length 183 [2020-09-25 11:20:37,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:37,991 INFO L479 AbstractCegarLoop]: Abstraction has 2271 states and 2939 transitions. [2020-09-25 11:20:37,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:20:37,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 2939 transitions. [2020-09-25 11:20:37,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 11:20:37,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:37,997 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:37,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:20:37,998 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:37,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:37,999 INFO L82 PathProgramCache]: Analyzing trace with hash 139673377, now seen corresponding path program 1 times [2020-09-25 11:20:37,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:37,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314804008] [2020-09-25 11:20:37,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:38,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:38,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:38,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:39,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:39,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:41,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:43,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:43,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 11:20:43,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:43,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 11:20:43,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:43,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 11:20:43,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:43,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:43,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:43,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:43,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:43,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:43,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:20:43,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:43,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:43,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:43,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:43,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:43,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:43,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:43,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:43,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:43,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:20:43,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:43,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 11:20:43,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:43,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:43,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:43,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:43,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:20:43,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:43,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:20:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:43,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:43,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:43,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:43,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:43,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 11:20:43,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:43,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:43,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:43,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:43,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:20:43,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:43,735 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 11:20:43,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314804008] [2020-09-25 11:20:43,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:43,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:20:43,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42852323] [2020-09-25 11:20:43,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:20:43,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:43,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:20:43,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:20:43,738 INFO L87 Difference]: Start difference. First operand 2271 states and 2939 transitions. Second operand 9 states. [2020-09-25 11:20:47,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:47,843 INFO L93 Difference]: Finished difference Result 5792 states and 8548 transitions. [2020-09-25 11:20:47,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:20:47,844 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 229 [2020-09-25 11:20:47,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:47,872 INFO L225 Difference]: With dead ends: 5792 [2020-09-25 11:20:47,873 INFO L226 Difference]: Without dead ends: 4017 [2020-09-25 11:20:47,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:20:47,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4017 states. [2020-09-25 11:20:47,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4017 to 3277. [2020-09-25 11:20:47,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3277 states. [2020-09-25 11:20:48,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3277 states to 3277 states and 4261 transitions. [2020-09-25 11:20:48,010 INFO L78 Accepts]: Start accepts. Automaton has 3277 states and 4261 transitions. Word has length 229 [2020-09-25 11:20:48,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:48,011 INFO L479 AbstractCegarLoop]: Abstraction has 3277 states and 4261 transitions. [2020-09-25 11:20:48,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:20:48,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3277 states and 4261 transitions. [2020-09-25 11:20:48,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-25 11:20:48,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:48,018 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:48,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:20:48,018 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:48,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:48,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1467285388, now seen corresponding path program 1 times [2020-09-25 11:20:48,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:48,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484236821] [2020-09-25 11:20:48,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:48,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:48,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:49,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:49,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking...