/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/Problem10_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:56:10,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:56:10,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:56:10,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:56:10,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:56:10,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:56:10,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:56:10,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:56:10,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:56:10,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:56:10,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:56:10,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:56:10,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:56:10,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:56:10,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:56:10,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:56:10,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:56:10,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:56:10,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:56:10,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:56:10,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:56:10,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:56:10,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:56:10,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:56:10,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:56:10,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:56:10,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:56:10,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:56:10,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:56:10,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:56:10,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:56:10,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:56:10,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:56:10,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:56:10,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:56:10,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:56:10,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:56:10,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:56:10,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:56:10,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:56:10,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:56:10,554 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 07:56:10,609 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:56:10,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:56:10,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:56:10,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:56:10,616 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:56:10,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:56:10,616 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:56:10,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:56:10,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:56:10,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:56:10,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:56:10,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:56:10,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:56:10,617 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:56:10,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:56:10,618 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:56:10,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:56:10,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:56:10,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:56:10,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:56:10,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:56:10,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:56:10,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:56:10,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:56:10,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:56:10,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:56:10,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:56:10,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:56:10,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:56:10,623 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 07:56:11,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:56:11,105 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:56:11,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:56:11,113 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:56:11,114 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:56:11,116 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-09-25 07:56:11,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b7a62bd7/c9319a45993a42808751faf9f0ea62fb/FLAG4684aeb28 [2020-09-25 07:56:11,838 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:56:11,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-09-25 07:56:11,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b7a62bd7/c9319a45993a42808751faf9f0ea62fb/FLAG4684aeb28 [2020-09-25 07:56:12,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b7a62bd7/c9319a45993a42808751faf9f0ea62fb [2020-09-25 07:56:12,082 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:56:12,087 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:56:12,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:12,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:56:12,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:56:12,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:12" (1/1) ... [2020-09-25 07:56:12,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d1dceb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:12, skipping insertion in model container [2020-09-25 07:56:12,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:12" (1/1) ... [2020-09-25 07:56:12,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:56:12,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:56:12,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:12,802 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:56:12,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:13,008 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:56:13,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:13 WrapperNode [2020-09-25 07:56:13,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:13,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:56:13,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:56:13,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:56:13,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:13" (1/1) ... [2020-09-25 07:56:13,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:13" (1/1) ... [2020-09-25 07:56:13,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:13" (1/1) ... [2020-09-25 07:56:13,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:13" (1/1) ... [2020-09-25 07:56:13,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:13" (1/1) ... [2020-09-25 07:56:13,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:13" (1/1) ... [2020-09-25 07:56:13,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:13" (1/1) ... [2020-09-25 07:56:13,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:56:13,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:56:13,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:56:13,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:56:13,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:13" (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 07:56:13,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:56:13,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:56:13,312 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:56:13,312 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:56:13,312 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:56:13,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:56:13,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:56:13,315 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:56:13,315 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:56:13,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:56:13,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:56:15,159 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:56:15,159 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:56:15,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:15 BoogieIcfgContainer [2020-09-25 07:56:15,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:56:15,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:56:15,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:56:15,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:56:15,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:56:12" (1/3) ... [2020-09-25 07:56:15,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392ba3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:15, skipping insertion in model container [2020-09-25 07:56:15,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:13" (2/3) ... [2020-09-25 07:56:15,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392ba3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:15, skipping insertion in model container [2020-09-25 07:56:15,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:15" (3/3) ... [2020-09-25 07:56:15,179 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label17.c [2020-09-25 07:56:15,191 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:56:15,202 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:56:15,225 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:56:15,259 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:56:15,259 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:56:15,259 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:56:15,260 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:56:15,260 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:56:15,260 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:56:15,260 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:56:15,260 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:56:15,291 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:56:15,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 07:56:15,302 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:15,303 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] [2020-09-25 07:56:15,303 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:15,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:15,310 INFO L82 PathProgramCache]: Analyzing trace with hash -796596049, now seen corresponding path program 1 times [2020-09-25 07:56:15,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:15,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431393015] [2020-09-25 07:56:15,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:15,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:15,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:15,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:16,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:16,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 07:56:16,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:56:16,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-09-25 07:56:16,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:16,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:16,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:16,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:56:16,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 07:56:16,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:56:16,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:16,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:16,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:16,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:16,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:16,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 07:56:16,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:16,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:16,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:56:16,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:56:16,370 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 07:56:16,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431393015] [2020-09-25 07:56:16,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:16,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:56:16,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166555526] [2020-09-25 07:56:16,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:56:16,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:16,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:56:16,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:56:16,413 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 07:56:18,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:18,762 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 07:56:18,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:56:18,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-09-25 07:56:18,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:18,788 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 07:56:18,789 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 07:56:18,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:56:18,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 07:56:18,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 07:56:18,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 07:56:18,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 07:56:18,893 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 49 [2020-09-25 07:56:18,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:18,894 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 07:56:18,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:56:18,894 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 07:56:18,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 07:56:18,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:18,902 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:18,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:56:18,902 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:18,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:18,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1427265920, now seen corresponding path program 1 times [2020-09-25 07:56:18,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:18,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226640544] [2020-09-25 07:56:18,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:19,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:19,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:19,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:19,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:19,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:19,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:20,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:23,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:23,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 07:56:23,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:56:23,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 07:56:23,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:23,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:23,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:23,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:56:23,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 07:56:23,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:24,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:24,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:24,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:24,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:24,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:24,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:56:24,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:24,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:24,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:24,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:24,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:24,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:24,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:24,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:24,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:24,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:56:24,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:24,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 07:56:24,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:24,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:24,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:24,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:24,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:56:24,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:56:24,329 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:24,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226640544] [2020-09-25 07:56:24,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:24,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:56:24,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187776873] [2020-09-25 07:56:24,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:56:24,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:24,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:56:24,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:56:24,334 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 07:56:26,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:26,292 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 07:56:26,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:56:26,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-09-25 07:56:26,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:26,299 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 07:56:26,299 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 07:56:26,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:56:26,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 07:56:26,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 07:56:26,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 07:56:26,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 07:56:26,338 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 128 [2020-09-25 07:56:26,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:26,340 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 07:56:26,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:56:26,340 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 07:56:26,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 07:56:26,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:26,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:26,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:56:26,345 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:26,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:26,345 INFO L82 PathProgramCache]: Analyzing trace with hash -863517790, now seen corresponding path program 1 times [2020-09-25 07:56:26,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:26,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26333145] [2020-09-25 07:56:26,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:26,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:26,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:26,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:26,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:26,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:30,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:30,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:31,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:31,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:31,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 07:56:31,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:56:31,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 07:56:31,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:31,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:31,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:56:31,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:56:31,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 07:56:31,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:31,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:31,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:31,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:31,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:31,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:31,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:56:31,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:31,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:31,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:31,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:31,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:31,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:31,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:31,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:31,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:31,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:31,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:31,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 07:56:31,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:31,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:31,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:56:31,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:31,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:56:31,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:31,728 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:31,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26333145] [2020-09-25 07:56:31,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:31,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:56:31,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935599709] [2020-09-25 07:56:31,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:56:31,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:31,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:56:31,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:56:31,733 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 6 states. [2020-09-25 07:56:34,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:34,882 INFO L93 Difference]: Finished difference Result 1905 states and 2481 transitions. [2020-09-25 07:56:34,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:56:34,883 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-09-25 07:56:34,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:34,893 INFO L225 Difference]: With dead ends: 1905 [2020-09-25 07:56:34,893 INFO L226 Difference]: Without dead ends: 1375 [2020-09-25 07:56:34,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:56:34,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2020-09-25 07:56:34,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1319. [2020-09-25 07:56:34,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-09-25 07:56:34,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1696 transitions. [2020-09-25 07:56:34,949 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1696 transitions. Word has length 138 [2020-09-25 07:56:34,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:34,950 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1696 transitions. [2020-09-25 07:56:34,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:56:34,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1696 transitions. [2020-09-25 07:56:34,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 07:56:34,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:34,955 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:34,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:56:34,955 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:34,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:34,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1456961498, now seen corresponding path program 1 times [2020-09-25 07:56:34,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:34,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488645946] [2020-09-25 07:56:34,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:35,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:35,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:35,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:35,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:36,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:37,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 07:56:37,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:56:37,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2604 [2020-09-25 07:56:37,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:37,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:56:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:56:37,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:37,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:37,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:37,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:37,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:37,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:56:37,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:37,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:37,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:37,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:37,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:56:37,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:37,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:37,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:37,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 07:56:37,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:37,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 07:56:37,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:37,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:37,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:37,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:37,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:56:37,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:37,958 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:37,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488645946] [2020-09-25 07:56:37,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:37,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:56:37,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953209446] [2020-09-25 07:56:37,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:56:37,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:37,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:56:37,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:37,961 INFO L87 Difference]: Start difference. First operand 1319 states and 1696 transitions. Second operand 7 states. [2020-09-25 07:56:40,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:40,425 INFO L93 Difference]: Finished difference Result 3325 states and 4502 transitions. [2020-09-25 07:56:40,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:56:40,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-09-25 07:56:40,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:40,439 INFO L225 Difference]: With dead ends: 3325 [2020-09-25 07:56:40,439 INFO L226 Difference]: Without dead ends: 2171 [2020-09-25 07:56:40,445 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 07:56:40,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2020-09-25 07:56:40,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 1813. [2020-09-25 07:56:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1813 states. [2020-09-25 07:56:40,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2269 transitions. [2020-09-25 07:56:40,514 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2269 transitions. Word has length 140 [2020-09-25 07:56:40,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:40,515 INFO L479 AbstractCegarLoop]: Abstraction has 1813 states and 2269 transitions. [2020-09-25 07:56:40,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:56:40,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2269 transitions. [2020-09-25 07:56:40,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 07:56:40,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:40,521 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:56:40,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:56:40,521 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:40,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:40,522 INFO L82 PathProgramCache]: Analyzing trace with hash 275637238, now seen corresponding path program 1 times [2020-09-25 07:56:40,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:40,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195906723] [2020-09-25 07:56:40,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:40,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:40,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:40,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:41,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:41,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:43,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:43,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:43,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:44,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:44,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-09-25 07:56:44,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:56:44,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3501 [2020-09-25 07:56:44,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:44,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:56:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:56:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 07:56:44,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:44,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:44,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:44,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:44,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:44,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:44,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:56:44,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:44,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:44,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:44,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:44,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:44,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:44,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:44,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:56:44,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:44,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 07:56:44,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:44,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:56:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 07:56:44,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:44,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:56:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:44,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:44,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:44,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:44,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 07:56:44,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:56:44,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 07:56:44,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:44,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:44,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:44,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:44,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:56:44,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 102 proven. 29 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 07:56:44,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195906723] [2020-09-25 07:56:44,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:44,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:56:44,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770608748] [2020-09-25 07:56:44,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:56:44,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:44,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:56:44,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:56:44,736 INFO L87 Difference]: Start difference. First operand 1813 states and 2269 transitions. Second operand 8 states. [2020-09-25 07:56:48,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:48,223 INFO L93 Difference]: Finished difference Result 4982 states and 6574 transitions. [2020-09-25 07:56:48,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 07:56:48,224 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 208 [2020-09-25 07:56:48,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:48,241 INFO L225 Difference]: With dead ends: 4982 [2020-09-25 07:56:48,242 INFO L226 Difference]: Without dead ends: 3334 [2020-09-25 07:56:48,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:56:48,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2020-09-25 07:56:48,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 2940. [2020-09-25 07:56:48,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2940 states. [2020-09-25 07:56:48,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 3913 transitions. [2020-09-25 07:56:48,346 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 3913 transitions. Word has length 208 [2020-09-25 07:56:48,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:48,347 INFO L479 AbstractCegarLoop]: Abstraction has 2940 states and 3913 transitions. [2020-09-25 07:56:48,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:56:48,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 3913 transitions. [2020-09-25 07:56:48,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-25 07:56:48,352 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:48,352 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:56:48,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:56:48,352 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:48,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:48,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1170652356, now seen corresponding path program 1 times [2020-09-25 07:56:48,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:48,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076808974] [2020-09-25 07:56:48,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:48,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:48,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:48,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:48,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:49,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:52,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:53,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:53,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:53,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-09-25 07:56:53,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:56:53,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 07:56:53,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:53,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:53,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:53,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:56:53,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:56:53,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:53,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:53,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:53,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:53,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:53,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:53,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:56:53,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:53,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:53,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:53,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:53,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:53,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:53,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:53,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:53,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:53,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 07:56:53,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:53,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:53,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:53,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:53,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 07:56:53,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:53,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:56:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:53,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:53,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:53,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:56:53,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:53,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 07:56:53,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:53,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 07:56:53,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:54,004 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:56:54,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076808974] [2020-09-25 07:56:54,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:54,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:56:54,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954953522] [2020-09-25 07:56:54,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:56:54,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:54,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:56:54,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:56:54,007 INFO L87 Difference]: Start difference. First operand 2940 states and 3913 transitions. Second operand 9 states. [2020-09-25 07:56:58,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:58,339 INFO L93 Difference]: Finished difference Result 6263 states and 8381 transitions. [2020-09-25 07:56:58,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 07:56:58,340 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 221 [2020-09-25 07:56:58,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:58,358 INFO L225 Difference]: With dead ends: 6263 [2020-09-25 07:56:58,358 INFO L226 Difference]: Without dead ends: 3488 [2020-09-25 07:56:58,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2020-09-25 07:56:58,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2020-09-25 07:56:58,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 3262. [2020-09-25 07:56:58,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3262 states. [2020-09-25 07:56:58,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3262 states to 3262 states and 4324 transitions. [2020-09-25 07:56:58,472 INFO L78 Accepts]: Start accepts. Automaton has 3262 states and 4324 transitions. Word has length 221 [2020-09-25 07:56:58,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:58,472 INFO L479 AbstractCegarLoop]: Abstraction has 3262 states and 4324 transitions. [2020-09-25 07:56:58,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:56:58,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3262 states and 4324 transitions. [2020-09-25 07:56:58,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 07:56:58,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:58,478 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:56:58,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:56:58,478 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:58,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:58,479 INFO L82 PathProgramCache]: Analyzing trace with hash -2013862229, now seen corresponding path program 1 times [2020-09-25 07:56:58,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:58,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485642485] [2020-09-25 07:56:58,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:58,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:58,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:58,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:58,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:59,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:59,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking...