/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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/Problem14_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:57:59,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:57:59,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:57:59,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:57:59,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:57:59,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:57:59,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:57:59,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:57:59,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:57:59,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:57:59,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:57:59,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:57:59,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:57:59,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:57:59,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:57:59,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:57:59,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:57:59,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:57:59,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:57:59,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:57:59,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:57:59,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:57:59,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:57:59,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:57:59,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:57:59,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:57:59,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:57:59,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:57:59,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:57:59,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:57:59,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:57:59,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:57:59,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:57:59,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:57:59,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:57:59,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:57:59,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:57:59,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:57:59,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:57:59,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:57:59,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:57:59,622 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 07:57:59,666 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:57:59,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:57:59,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:57:59,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:57:59,669 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:57:59,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:57:59,670 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:57:59,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:57:59,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:57:59,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:57:59,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:57:59,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:57:59,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:57:59,672 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:57:59,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:57:59,673 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:57:59,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:57:59,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:57:59,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:57:59,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:57:59,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:57:59,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:57:59,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:57:59,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:57:59,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:57:59,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:57:59,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:57:59,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:57:59,675 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:57:59,676 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:58:00,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:58:00,123 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:58:00,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:58:00,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:58:00,130 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:58:00,131 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-25 07:58:00,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32603ee08/41fc260892914ac0a3cc675296b63580/FLAG7c7d2d68d [2020-09-25 07:58:00,839 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:58:00,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-25 07:58:00,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32603ee08/41fc260892914ac0a3cc675296b63580/FLAG7c7d2d68d [2020-09-25 07:58:01,084 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32603ee08/41fc260892914ac0a3cc675296b63580 [2020-09-25 07:58:01,098 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:58:01,103 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:58:01,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:58:01,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:58:01,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:58:01,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:58:01" (1/1) ... [2020-09-25 07:58:01,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45214687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:01, skipping insertion in model container [2020-09-25 07:58:01,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:58:01" (1/1) ... [2020-09-25 07:58:01,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:58:01,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:58:01,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:58:01,867 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:58:02,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:58:02,099 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:58:02,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:02 WrapperNode [2020-09-25 07:58:02,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:58:02,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:58:02,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:58:02,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:58:02,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:02" (1/1) ... [2020-09-25 07:58:02,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:02" (1/1) ... [2020-09-25 07:58:02,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:02" (1/1) ... [2020-09-25 07:58:02,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:02" (1/1) ... [2020-09-25 07:58:02,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:02" (1/1) ... [2020-09-25 07:58:02,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:02" (1/1) ... [2020-09-25 07:58:02,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:02" (1/1) ... [2020-09-25 07:58:02,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:58:02,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:58:02,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:58:02,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:58:02,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:02" (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 07:58:02,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:58:02,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:58:02,306 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:58:02,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:58:02,306 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:58:02,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:58:02,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:58:02,307 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:58:02,308 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:58:02,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:58:02,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:58:03,954 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:58:03,955 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:58:03,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:58:03 BoogieIcfgContainer [2020-09-25 07:58:03,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:58:03,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:58:03,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:58:03,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:58:03,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:58:01" (1/3) ... [2020-09-25 07:58:03,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72be7ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:58:03, skipping insertion in model container [2020-09-25 07:58:03,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:58:02" (2/3) ... [2020-09-25 07:58:03,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72be7ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:58:03, skipping insertion in model container [2020-09-25 07:58:03,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:58:03" (3/3) ... [2020-09-25 07:58:03,980 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label36.c [2020-09-25 07:58:03,992 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:58:04,010 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:58:04,033 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:58:04,081 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:58:04,082 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:58:04,083 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:58:04,083 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:58:04,083 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:58:04,083 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:58:04,083 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:58:04,083 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:58:04,129 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 07:58:04,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 07:58:04,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:04,146 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] [2020-09-25 07:58:04,146 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:04,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:04,155 INFO L82 PathProgramCache]: Analyzing trace with hash -4985686, now seen corresponding path program 1 times [2020-09-25 07:58:04,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:04,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370089309] [2020-09-25 07:58:04,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:04,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:04,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:04,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:05,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:05,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 07:58:05,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:58:05,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-09-25 07:58:05,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:05,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:05,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:58:05,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:58:05,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 07:58:05,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:58:05,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:05,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:05,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:05,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:05,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:05,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:58:05,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:05,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:05,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:05,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:05,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:58:05,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:05,227 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 07:58:05,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370089309] [2020-09-25 07:58:05,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:58:05,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:58:05,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416410696] [2020-09-25 07:58:05,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:58:05,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:05,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:58:05,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:58:05,260 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 07:58:08,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:08,071 INFO L93 Difference]: Finished difference Result 1656 states and 2196 transitions. [2020-09-25 07:58:08,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:58:08,074 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-25 07:58:08,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:08,103 INFO L225 Difference]: With dead ends: 1656 [2020-09-25 07:58:08,104 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 07:58:08,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:58:08,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 07:58:08,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 806. [2020-09-25 07:58:08,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 07:58:08,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 969 transitions. [2020-09-25 07:58:08,238 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 969 transitions. Word has length 67 [2020-09-25 07:58:08,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:08,239 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 969 transitions. [2020-09-25 07:58:08,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:58:08,239 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 969 transitions. [2020-09-25 07:58:08,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 07:58:08,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:08,258 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, 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] [2020-09-25 07:58:08,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:58:08,260 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:08,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:08,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1033084141, now seen corresponding path program 1 times [2020-09-25 07:58:08,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:08,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533212873] [2020-09-25 07:58:08,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:08,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:08,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:08,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:08,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:09,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:10,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:10,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:13,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:13,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 07:58:13,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:58:13,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 07:58:13,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:13,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:13,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:58:13,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:58:13,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 07:58:13,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:13,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:13,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:13,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:13,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:13,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:13,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:58:13,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:13,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:58:13,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:13,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:13,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:13,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:13,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:58:13,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:13,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 07:58:13,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:13,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:13,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:13,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:13,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 07:58:13,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:13,636 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:58:13,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533212873] [2020-09-25 07:58:13,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:58:13,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:58:13,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161277558] [2020-09-25 07:58:13,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:58:13,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:13,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:58:13,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:58:13,641 INFO L87 Difference]: Start difference. First operand 806 states and 969 transitions. Second operand 7 states. [2020-09-25 07:58:16,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:16,619 INFO L93 Difference]: Finished difference Result 2051 states and 2571 transitions. [2020-09-25 07:58:16,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:58:16,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-09-25 07:58:16,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:16,627 INFO L225 Difference]: With dead ends: 2051 [2020-09-25 07:58:16,627 INFO L226 Difference]: Without dead ends: 1260 [2020-09-25 07:58:16,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:58:16,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2020-09-25 07:58:16,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1196. [2020-09-25 07:58:16,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2020-09-25 07:58:16,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1457 transitions. [2020-09-25 07:58:16,674 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1457 transitions. Word has length 146 [2020-09-25 07:58:16,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:16,674 INFO L479 AbstractCegarLoop]: Abstraction has 1196 states and 1457 transitions. [2020-09-25 07:58:16,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:58:16,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1457 transitions. [2020-09-25 07:58:16,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 07:58:16,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:16,677 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, 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] [2020-09-25 07:58:16,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:58:16,678 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:16,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:16,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1169132927, now seen corresponding path program 1 times [2020-09-25 07:58:16,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:16,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270587719] [2020-09-25 07:58:16,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:16,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:16,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:16,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:18,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:18,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:18,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:19,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:20,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:20,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 07:58:20,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:58:20,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3634 [2020-09-25 07:58:20,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:20,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:20,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:58:20,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:58:20,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 07:58:20,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:20,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:20,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:20,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:20,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:20,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:20,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:58:20,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:20,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:20,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:20,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:20,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:58:20,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:20,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:20,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:20,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:20,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 07:58:20,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:20,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 07:58:20,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:20,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:20,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:20,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:58:20,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:20,685 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:58:20,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270587719] [2020-09-25 07:58:20,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:58:20,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:58:20,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127706278] [2020-09-25 07:58:20,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:58:20,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:20,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:58:20,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:58:20,691 INFO L87 Difference]: Start difference. First operand 1196 states and 1457 transitions. Second operand 7 states. [2020-09-25 07:58:23,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:23,719 INFO L93 Difference]: Finished difference Result 2855 states and 3504 transitions. [2020-09-25 07:58:23,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:58:23,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2020-09-25 07:58:23,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:23,729 INFO L225 Difference]: With dead ends: 2855 [2020-09-25 07:58:23,730 INFO L226 Difference]: Without dead ends: 1674 [2020-09-25 07:58:23,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:58:23,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2020-09-25 07:58:23,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1638. [2020-09-25 07:58:23,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1638 states. [2020-09-25 07:58:23,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 1944 transitions. [2020-09-25 07:58:23,809 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 1944 transitions. Word has length 149 [2020-09-25 07:58:23,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:23,809 INFO L479 AbstractCegarLoop]: Abstraction has 1638 states and 1944 transitions. [2020-09-25 07:58:23,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:58:23,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 1944 transitions. [2020-09-25 07:58:23,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-25 07:58:23,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:23,814 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, 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, 1, 1, 1, 1, 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 07:58:23,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:58:23,815 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:23,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:23,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1277460696, now seen corresponding path program 1 times [2020-09-25 07:58:23,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:23,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679884337] [2020-09-25 07:58:23,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:24,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:24,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:24,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:24,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:25,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:25,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:27,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:27,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:28,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:28,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-09-25 07:58:28,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:58:28,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 07:58:28,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:28,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 07:58:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 07:58:28,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:29,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:29,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:29,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:29,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:29,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:29,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:58:29,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:29,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:29,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:58:29,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:29,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:58:29,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:29,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:29,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:29,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:29,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 07:58:29,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:29,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 07:58:29,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:29,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:29,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:29,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 07:58:29,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:29,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 07:58:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:29,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:29,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:29,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 07:58:29,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:29,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 07:58:29,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:29,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:29,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:29,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:29,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 07:58:29,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:58:29,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679884337] [2020-09-25 07:58:29,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:58:29,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:58:29,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835772335] [2020-09-25 07:58:29,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:58:29,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:29,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:58:29,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:58:29,616 INFO L87 Difference]: Start difference. First operand 1638 states and 1944 transitions. Second operand 7 states. [2020-09-25 07:58:33,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:33,125 INFO L93 Difference]: Finished difference Result 3747 states and 4622 transitions. [2020-09-25 07:58:33,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:58:33,127 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-09-25 07:58:33,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:33,138 INFO L225 Difference]: With dead ends: 3747 [2020-09-25 07:58:33,138 INFO L226 Difference]: Without dead ends: 2313 [2020-09-25 07:58:33,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:58:33,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2020-09-25 07:58:33,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 2283. [2020-09-25 07:58:33,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2283 states. [2020-09-25 07:58:33,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 2678 transitions. [2020-09-25 07:58:33,204 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 2678 transitions. Word has length 254 [2020-09-25 07:58:33,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:33,206 INFO L479 AbstractCegarLoop]: Abstraction has 2283 states and 2678 transitions. [2020-09-25 07:58:33,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:58:33,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 2678 transitions. [2020-09-25 07:58:33,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-09-25 07:58:33,212 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:33,212 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:33,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:58:33,213 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:33,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:33,213 INFO L82 PathProgramCache]: Analyzing trace with hash -404945933, now seen corresponding path program 1 times [2020-09-25 07:58:33,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:33,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166687490] [2020-09-25 07:58:33,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:33,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:33,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:33,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:34,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:36,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:36,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:37,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:38,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:38,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-09-25 07:58:38,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:58:38,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:58:38,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:38,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:38,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:38,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-09-25 07:58:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 07:58:38,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:38,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:38,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:38,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:38,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:38,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:38,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:58:38,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:38,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:38,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:58:38,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:38,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:58:38,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:38,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:38,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:38,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:38,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 07:58:38,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:38,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 07:58:38,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:38,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:38,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 07:58:38,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:38,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 07:58:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:38,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:38,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:38,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 07:58:38,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:38,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-25 07:58:38,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:38,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:38,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:38,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:38,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 07:58:38,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:58:39,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166687490] [2020-09-25 07:58:39,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:58:39,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:58:39,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802892335] [2020-09-25 07:58:39,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:58:39,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:39,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:58:39,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:58:39,117 INFO L87 Difference]: Start difference. First operand 2283 states and 2678 transitions. Second operand 7 states. [2020-09-25 07:58:42,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:42,503 INFO L93 Difference]: Finished difference Result 5170 states and 6147 transitions. [2020-09-25 07:58:42,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:58:42,503 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 303 [2020-09-25 07:58:42,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:42,516 INFO L225 Difference]: With dead ends: 5170 [2020-09-25 07:58:42,516 INFO L226 Difference]: Without dead ends: 2371 [2020-09-25 07:58:42,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:58:42,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-09-25 07:58:42,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2126. [2020-09-25 07:58:42,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2126 states. [2020-09-25 07:58:42,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 2392 transitions. [2020-09-25 07:58:42,591 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 2392 transitions. Word has length 303 [2020-09-25 07:58:42,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:42,592 INFO L479 AbstractCegarLoop]: Abstraction has 2126 states and 2392 transitions. [2020-09-25 07:58:42,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:58:42,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 2392 transitions. [2020-09-25 07:58:42,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-09-25 07:58:42,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:42,597 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:42,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:58:42,598 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:42,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:42,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1691491011, now seen corresponding path program 1 times [2020-09-25 07:58:42,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:42,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060289177] [2020-09-25 07:58:42,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:42,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:42,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:42,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:43,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:45,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:47,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:47,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-09-25 07:58:47,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:58:47,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 07:58:47,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:47,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:47,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:47,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-25 07:58:47,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 07:58:47,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:58:47,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:47,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:47,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:47,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:47,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:47,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:58:47,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:47,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:47,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:58:47,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:47,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:58:47,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:47,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:47,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:47,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:47,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 07:58:47,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:47,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 07:58:47,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:47,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:47,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:47,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:47,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 07:58:47,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:47,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 07:58:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:48,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:48,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:48,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 07:58:48,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:48,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-09-25 07:58:48,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:48,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:48,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:48,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 07:58:48,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:48,870 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:58:48,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060289177] [2020-09-25 07:58:48,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:58:48,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:58:48,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67825616] [2020-09-25 07:58:48,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:58:48,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:48,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:58:48,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:58:48,873 INFO L87 Difference]: Start difference. First operand 2126 states and 2392 transitions. Second operand 7 states.