/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:30:51,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:30:51,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:30:51,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:30:51,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:30:51,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:30:51,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:30:51,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:30:51,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:30:51,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:30:51,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:30:51,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:30:51,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:30:51,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:30:51,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:30:51,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:30:51,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:30:51,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:30:51,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:30:51,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:30:51,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:30:51,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:30:51,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:30:51,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:30:51,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:30:51,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:30:51,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:30:51,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:30:51,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:30:51,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:30:51,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:30:51,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:30:51,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:30:51,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:30:51,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:30:51,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:30:51,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:30:51,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:30:51,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:30:51,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:30:51,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:30:51,538 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 [2020-10-14 22:30:51,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:30:51,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:30:51,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:30:51,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:30:51,592 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:30:51,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:30:51,593 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:30:51,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:30:51,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:30:51,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:30:51,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:30:51,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:30:51,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:30:51,595 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:30:51,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:30:51,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:30:51,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:30:51,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:30:51,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:30:51,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:30:51,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:30:51,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:30:51,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:30:51,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:30:51,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:30:51,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:30:51,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:30:51,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:30:51,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:30:51,599 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:30:51,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:30:51,972 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:30:51,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:30:51,979 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:30:51,980 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:30:51,981 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label28.c [2020-10-14 22:30:52,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/691942782/e77636c8f5c3446d8115647e6d54c575/FLAGbc7180c9c [2020-10-14 22:30:52,942 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:30:52,943 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label28.c [2020-10-14 22:30:52,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/691942782/e77636c8f5c3446d8115647e6d54c575/FLAGbc7180c9c [2020-10-14 22:30:53,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/691942782/e77636c8f5c3446d8115647e6d54c575 [2020-10-14 22:30:53,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:30:53,440 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:30:53,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:30:53,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:30:53,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:30:53,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:30:53" (1/1) ... [2020-10-14 22:30:53,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e2018f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:53, skipping insertion in model container [2020-10-14 22:30:53,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:30:53" (1/1) ... [2020-10-14 22:30:53,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:30:53,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:30:54,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:30:54,915 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:30:55,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:30:56,015 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:30:56,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:56 WrapperNode [2020-10-14 22:30:56,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:30:56,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:30:56,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:30:56,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:30:56,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:56" (1/1) ... [2020-10-14 22:30:56,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:56" (1/1) ... [2020-10-14 22:30:56,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:56" (1/1) ... [2020-10-14 22:30:56,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:56" (1/1) ... [2020-10-14 22:30:56,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:56" (1/1) ... [2020-10-14 22:30:56,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:56" (1/1) ... [2020-10-14 22:30:56,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:56" (1/1) ... [2020-10-14 22:30:56,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:30:56,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:30:56,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:30:56,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:30:56,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:56" (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 [2020-10-14 22:30:56,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:30:56,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:30:56,474 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:30:56,475 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:30:56,475 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:30:56,475 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:30:56,475 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:30:56,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:30:56,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:30:56,476 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:30:56,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:30:56,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:30:56,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:31:04,300 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:31:04,300 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:31:04,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:31:04 BoogieIcfgContainer [2020-10-14 22:31:04,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:31:04,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:31:04,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:31:04,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:31:04,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:30:53" (1/3) ... [2020-10-14 22:31:04,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf8b17a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:31:04, skipping insertion in model container [2020-10-14 22:31:04,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:30:56" (2/3) ... [2020-10-14 22:31:04,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf8b17a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:31:04, skipping insertion in model container [2020-10-14 22:31:04,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:31:04" (3/3) ... [2020-10-14 22:31:04,324 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label28.c [2020-10-14 22:31:04,336 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:31:04,346 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:31:04,362 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:31:04,393 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:31:04,393 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:31:04,393 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:31:04,393 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:31:04,394 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:31:04,394 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:31:04,394 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:31:04,394 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:31:04,429 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:31:04,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 22:31:04,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:31:04,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:31:04,444 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:31:04,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:31:04,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1669543897, now seen corresponding path program 1 times [2020-10-14 22:31:04,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:31:04,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101839857] [2020-10-14 22:31:04,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:31:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:04,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:05,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:05,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 22:31:05,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:05,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-10-14 22:31:05,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:05,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:05,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:31:05,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:31:05,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:31:05,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:31:05,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:31:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:05,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:05,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:05,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:31:05,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:05,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:31:05,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:05,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:05,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:31:05,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:05,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:31:05,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:31:05,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101839857] [2020-10-14 22:31:05,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:31:05,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:31:05,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720904551] [2020-10-14 22:31:05,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:31:05,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:31:05,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:31:05,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:31:05,474 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:31:16,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:31:16,627 INFO L93 Difference]: Finished difference Result 1690 states and 3086 transitions. [2020-10-14 22:31:16,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:31:16,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-14 22:31:16,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:31:16,660 INFO L225 Difference]: With dead ends: 1690 [2020-10-14 22:31:16,660 INFO L226 Difference]: Without dead ends: 1010 [2020-10-14 22:31:16,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:31:16,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-14 22:31:16,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1003. [2020-10-14 22:31:16,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-14 22:31:16,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1499 transitions. [2020-10-14 22:31:16,863 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1499 transitions. Word has length 70 [2020-10-14 22:31:16,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:31:16,867 INFO L479 AbstractCegarLoop]: Abstraction has 1003 states and 1499 transitions. [2020-10-14 22:31:16,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:31:16,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1499 transitions. [2020-10-14 22:31:16,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 22:31:16,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:31:16,888 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, 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] [2020-10-14 22:31:16,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:31:16,889 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:31:16,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:31:16,889 INFO L82 PathProgramCache]: Analyzing trace with hash 2046127664, now seen corresponding path program 1 times [2020-10-14 22:31:16,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:31:16,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682931635] [2020-10-14 22:31:16,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:31:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:17,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:17,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:18,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:21,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:21,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 22:31:21,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:31:21,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4849 [2020-10-14 22:31:21,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:21,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:31:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:31:21,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 22:31:21,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:31:22,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:31:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:22,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:22,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:22,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:31:22,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:22,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 22:31:22,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:22,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:22,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:31:22,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:22,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:31:22,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:22,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:31:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:22,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:22,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:22,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:31:22,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:22,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-14 22:31:22,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:22,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:22,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:31:22,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:31:22,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:31:22,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 38 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:31:22,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682931635] [2020-10-14 22:31:22,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:31:22,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:31:22,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313600273] [2020-10-14 22:31:22,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:31:22,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:31:22,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:31:22,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:31:22,622 INFO L87 Difference]: Start difference. First operand 1003 states and 1499 transitions. Second operand 8 states. [2020-10-14 22:31:41,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:31:41,410 INFO L93 Difference]: Finished difference Result 3006 states and 4531 transitions. [2020-10-14 22:31:41,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:31:41,411 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 144 [2020-10-14 22:31:41,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:31:41,427 INFO L225 Difference]: With dead ends: 3006 [2020-10-14 22:31:41,427 INFO L226 Difference]: Without dead ends: 1966 [2020-10-14 22:31:41,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:31:41,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2020-10-14 22:31:41,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1910. [2020-10-14 22:31:41,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1910 states. [2020-10-14 22:31:41,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2753 transitions. [2020-10-14 22:31:41,515 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2753 transitions. Word has length 144 [2020-10-14 22:31:41,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:31:41,519 INFO L479 AbstractCegarLoop]: Abstraction has 1910 states and 2753 transitions. [2020-10-14 22:31:41,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:31:41,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2753 transitions. [2020-10-14 22:31:41,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-14 22:31:41,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:31:41,524 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, 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] [2020-10-14 22:31:41,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:31:41,525 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:31:41,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:31:41,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1609853436, now seen corresponding path program 1 times [2020-10-14 22:31:41,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:31:41,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474652055] [2020-10-14 22:31:41,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:31:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:41,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:41,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:41,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 22:31:41,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:41,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-14 22:31:41,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:41,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:41,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:31:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:31:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 22:31:41,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:42,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:31:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:42,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:42,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:42,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:31:42,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:42,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:31:42,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:42,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:42,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:31:42,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:42,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:31:42,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:31:42,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:31:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:42,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:42,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:42,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:31:42,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:42,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 22:31:42,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:42,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:42,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:31:42,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:42,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:31:42,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:42,341 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:31:42,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474652055] [2020-10-14 22:31:42,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:31:42,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:31:42,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707573004] [2020-10-14 22:31:42,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:31:42,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:31:42,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:31:42,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:31:42,345 INFO L87 Difference]: Start difference. First operand 1910 states and 2753 transitions. Second operand 5 states. [2020-10-14 22:31:56,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:31:56,232 INFO L93 Difference]: Finished difference Result 5614 states and 8199 transitions. [2020-10-14 22:31:56,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:31:56,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-14 22:31:56,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:31:56,258 INFO L225 Difference]: With dead ends: 5614 [2020-10-14 22:31:56,259 INFO L226 Difference]: Without dead ends: 3710 [2020-10-14 22:31:56,266 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 [2020-10-14 22:31:56,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2020-10-14 22:31:56,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 3691. [2020-10-14 22:31:56,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3691 states. [2020-10-14 22:31:56,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 5029 transitions. [2020-10-14 22:31:56,378 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 5029 transitions. Word has length 157 [2020-10-14 22:31:56,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:31:56,379 INFO L479 AbstractCegarLoop]: Abstraction has 3691 states and 5029 transitions. [2020-10-14 22:31:56,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:31:56,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 5029 transitions. [2020-10-14 22:31:56,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 22:31:56,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:31:56,382 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, 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] [2020-10-14 22:31:56,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:31:56,383 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:31:56,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:31:56,383 INFO L82 PathProgramCache]: Analyzing trace with hash 188048541, now seen corresponding path program 1 times [2020-10-14 22:31:56,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:31:56,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726453676] [2020-10-14 22:31:56,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:31:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:56,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:56,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:56,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:57,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:57,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:57,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 22:31:57,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:31:57,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1401 [2020-10-14 22:31:57,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:57,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:57,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:31:57,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:31:57,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 22:31:57,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 22:31:57,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:31:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:57,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:57,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:57,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:31:57,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:57,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:31:57,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:57,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:57,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:31:57,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:57,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:31:57,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:57,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:31:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:57,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:58,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:58,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:58,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:58,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:31:58,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:31:58,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-14 22:31:58,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:58,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:58,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:31:58,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:31:58,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:31:58,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:58,461 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:31:58,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726453676] [2020-10-14 22:31:58,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:31:58,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:31:58,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77046572] [2020-10-14 22:31:58,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:31:58,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:31:58,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:31:58,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:31:58,471 INFO L87 Difference]: Start difference. First operand 3691 states and 5029 transitions. Second operand 7 states. [2020-10-14 22:32:13,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:32:13,673 INFO L93 Difference]: Finished difference Result 8312 states and 11762 transitions. [2020-10-14 22:32:13,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:32:13,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-10-14 22:32:13,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:32:13,699 INFO L225 Difference]: With dead ends: 8312 [2020-10-14 22:32:13,700 INFO L226 Difference]: Without dead ends: 4627 [2020-10-14 22:32:13,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:32:13,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2020-10-14 22:32:13,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4608. [2020-10-14 22:32:13,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4608 states. [2020-10-14 22:32:13,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4608 states to 4608 states and 5907 transitions. [2020-10-14 22:32:13,825 INFO L78 Accepts]: Start accepts. Automaton has 4608 states and 5907 transitions. Word has length 166 [2020-10-14 22:32:13,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:32:13,826 INFO L479 AbstractCegarLoop]: Abstraction has 4608 states and 5907 transitions. [2020-10-14 22:32:13,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:32:13,826 INFO L276 IsEmpty]: Start isEmpty. Operand 4608 states and 5907 transitions. [2020-10-14 22:32:13,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 22:32:13,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:32:13,830 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:32:13,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:32:13,831 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:32:13,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:32:13,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1643632017, now seen corresponding path program 1 times [2020-10-14 22:32:13,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:32:13,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342082007] [2020-10-14 22:32:13,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:32:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:13,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:14,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:14,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:16,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:18,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:18,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 22:32:18,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:32:18,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 22:32:18,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:18,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:18,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:32:18,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:32:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-14 22:32:18,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:32:19,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:32:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:19,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:19,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:19,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:32:19,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:19,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:32:19,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:19,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:19,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:32:19,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:19,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:32:19,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:19,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:32:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:19,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:19,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:19,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:32:19,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:19,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 22:32:19,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:19,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:32:19,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:32:19,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:32:19,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:19,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:32:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:19,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:19,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:19,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:19,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:32:19,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:32:19,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-14 22:32:19,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:19,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:19,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:32:19,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:32:19,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:32:19,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:19,710 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 6 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:32:19,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342082007] [2020-10-14 22:32:19,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:32:19,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:32:19,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940517114] [2020-10-14 22:32:19,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:32:19,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:32:19,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:32:19,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:32:19,716 INFO L87 Difference]: Start difference. First operand 4608 states and 5907 transitions. Second operand 10 states. [2020-10-14 22:32:52,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:32:52,416 INFO L93 Difference]: Finished difference Result 13175 states and 18335 transitions. [2020-10-14 22:32:52,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 22:32:52,417 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 232 [2020-10-14 22:32:52,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:32:52,462 INFO L225 Difference]: With dead ends: 13175 [2020-10-14 22:32:52,462 INFO L226 Difference]: Without dead ends: 9006 [2020-10-14 22:32:52,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-10-14 22:32:52,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9006 states. [2020-10-14 22:32:52,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9006 to 8399. [2020-10-14 22:32:52,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8399 states. [2020-10-14 22:32:52,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8399 states to 8399 states and 10934 transitions. [2020-10-14 22:32:52,740 INFO L78 Accepts]: Start accepts. Automaton has 8399 states and 10934 transitions. Word has length 232 [2020-10-14 22:32:52,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:32:52,740 INFO L479 AbstractCegarLoop]: Abstraction has 8399 states and 10934 transitions. [2020-10-14 22:32:52,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:32:52,741 INFO L276 IsEmpty]: Start isEmpty. Operand 8399 states and 10934 transitions. [2020-10-14 22:32:52,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-14 22:32:52,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:32:52,745 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:32:52,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:32:52,746 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:32:52,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:32:52,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1971942084, now seen corresponding path program 1 times [2020-10-14 22:32:52,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:32:52,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192711573] [2020-10-14 22:32:52,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:32:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:52,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:53,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:53,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:57,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:57,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-14 22:32:57,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:32:57,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 22:32:57,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:57,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:57,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:32:57,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:32:57,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 22:32:57,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:58,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:32:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:58,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:58,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:58,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:32:58,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:58,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:32:58,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:58,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:58,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:32:58,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:58,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:32:58,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:58,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:32:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:58,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:58,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:58,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:32:58,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:58,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 22:32:58,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:58,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:32:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:32:58,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:58,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:32:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:58,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:58,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:58,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:58,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:32:58,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:32:58,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-14 22:32:58,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:58,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:58,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:32:58,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:58,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:32:58,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:32:58,613 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 22:32:58,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192711573] [2020-10-14 22:32:58,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:32:58,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:32:58,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911478388] [2020-10-14 22:32:58,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:32:58,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:32:58,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:32:58,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:32:58,618 INFO L87 Difference]: Start difference. First operand 8399 states and 10934 transitions. Second operand 5 states. [2020-10-14 22:33:13,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:33:13,166 INFO L93 Difference]: Finished difference Result 16821 states and 22390 transitions. [2020-10-14 22:33:13,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:33:13,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 243 [2020-10-14 22:33:13,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:33:13,204 INFO L225 Difference]: With dead ends: 16821 [2020-10-14 22:33:13,204 INFO L226 Difference]: Without dead ends: 8861 [2020-10-14 22:33:13,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:33:13,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8861 states. [2020-10-14 22:33:13,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8861 to 8399. [2020-10-14 22:33:13,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8399 states. [2020-10-14 22:33:13,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8399 states to 8399 states and 10934 transitions. [2020-10-14 22:33:13,408 INFO L78 Accepts]: Start accepts. Automaton has 8399 states and 10934 transitions. Word has length 243 [2020-10-14 22:33:13,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:33:13,408 INFO L479 AbstractCegarLoop]: Abstraction has 8399 states and 10934 transitions. [2020-10-14 22:33:13,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:33:13,409 INFO L276 IsEmpty]: Start isEmpty. Operand 8399 states and 10934 transitions. [2020-10-14 22:33:13,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-14 22:33:13,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:33:13,417 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:33:13,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:33:13,418 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:33:13,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:33:13,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1433901793, now seen corresponding path program 1 times [2020-10-14 22:33:13,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:33:13,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847525830] [2020-10-14 22:33:13,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:33:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:13,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:13,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:13,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:14,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:16,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:18,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:18,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-14 22:33:18,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:33:18,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 22:33:18,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:18,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:18,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 22:33:18,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:33:18,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 322 [2020-10-14 22:33:18,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:18,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:33:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:18,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:18,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:18,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:33:18,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:18,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 22:33:18,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:18,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:18,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:33:18,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:33:18,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:33:18,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:18,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:33:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:18,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:18,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:18,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:33:18,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:18,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 22:33:18,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:18,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:18,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:33:18,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:33:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:33:18,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:33:18,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:33:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:19,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:19,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:19,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:33:19,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:19,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 22:33:19,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:19,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:19,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:33:19,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:33:19,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:33:19,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:19,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:33:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:19,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:19,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:19,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:33:19,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:19,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 22:33:19,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:19,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:33:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:33:19,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:33:19,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 9 proven. 184 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2020-10-14 22:33:19,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847525830] [2020-10-14 22:33:19,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:33:19,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:33:19,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560082613] [2020-10-14 22:33:19,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:33:19,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:33:19,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:33:19,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:33:19,494 INFO L87 Difference]: Start difference. First operand 8399 states and 10934 transitions. Second operand 8 states. [2020-10-14 22:33:48,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:33:48,078 INFO L93 Difference]: Finished difference Result 25818 states and 34502 transitions. [2020-10-14 22:33:48,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:33:48,080 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 314 [2020-10-14 22:33:48,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:33:48,144 INFO L225 Difference]: With dead ends: 25818 [2020-10-14 22:33:48,144 INFO L226 Difference]: Without dead ends: 17858 [2020-10-14 22:33:48,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:33:48,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17858 states. [2020-10-14 22:33:48,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17858 to 13739. [2020-10-14 22:33:48,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13739 states. [2020-10-14 22:33:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13739 states to 13739 states and 17378 transitions. [2020-10-14 22:33:48,551 INFO L78 Accepts]: Start accepts. Automaton has 13739 states and 17378 transitions. Word has length 314 [2020-10-14 22:33:48,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:33:48,552 INFO L479 AbstractCegarLoop]: Abstraction has 13739 states and 17378 transitions. [2020-10-14 22:33:48,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:33:48,552 INFO L276 IsEmpty]: Start isEmpty. Operand 13739 states and 17378 transitions. [2020-10-14 22:33:48,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-14 22:33:48,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:33:48,561 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:33:48,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:33:48,562 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:33:48,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:33:48,563 INFO L82 PathProgramCache]: Analyzing trace with hash -103774601, now seen corresponding path program 1 times [2020-10-14 22:33:48,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:33:48,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012208295] [2020-10-14 22:33:48,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:33:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:48,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:48,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:49,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:49,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:53,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:53,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:53,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-14 22:33:53,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:33:53,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 22:33:53,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:53,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:53,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:33:53,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-14 22:33:53,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 22:33:53,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:53,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:33:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:53,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:53,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:53,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:33:53,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:53,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:33:53,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:53,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:53,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:33:53,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:33:53,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:33:53,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:33:53,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:33:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:53,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:53,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:53,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:33:53,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:53,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 22:33:53,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:53,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:53,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:33:53,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:33:53,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:33:53,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:33:53,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:33:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:53,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:53,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:53,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:33:53,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:53,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 22:33:53,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:53,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:53,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:33:53,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:33:53,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 22:33:53,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:33:54,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:33:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:54,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:54,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:54,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:54,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:33:54,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:33:54,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 22:33:54,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:54,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:54,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:33:54,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:33:54,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:33:54,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:54,417 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 264 proven. 64 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-14 22:33:54,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012208295] [2020-10-14 22:33:54,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:33:54,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:33:54,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98614750] [2020-10-14 22:33:54,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:33:54,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:33:54,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:33:54,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:33:54,421 INFO L87 Difference]: Start difference. First operand 13739 states and 17378 transitions. Second operand 7 states. [2020-10-14 22:34:21,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:34:21,060 INFO L93 Difference]: Finished difference Result 32885 states and 43377 transitions. [2020-10-14 22:34:21,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:34:21,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 337 [2020-10-14 22:34:21,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:34:21,156 INFO L225 Difference]: With dead ends: 32885 [2020-10-14 22:34:21,156 INFO L226 Difference]: Without dead ends: 19585 [2020-10-14 22:34:21,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:34:21,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19585 states. [2020-10-14 22:34:21,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19585 to 19520. [2020-10-14 22:34:21,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19520 states. [2020-10-14 22:34:21,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19520 states to 19520 states and 25029 transitions. [2020-10-14 22:34:21,677 INFO L78 Accepts]: Start accepts. Automaton has 19520 states and 25029 transitions. Word has length 337 [2020-10-14 22:34:21,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:34:21,678 INFO L479 AbstractCegarLoop]: Abstraction has 19520 states and 25029 transitions. [2020-10-14 22:34:21,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:34:21,679 INFO L276 IsEmpty]: Start isEmpty. Operand 19520 states and 25029 transitions. [2020-10-14 22:34:21,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-14 22:34:21,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:34:21,691 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:34:21,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:34:21,691 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:34:21,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:34:21,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1034735837, now seen corresponding path program 1 times [2020-10-14 22:34:21,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:34:21,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534657727] [2020-10-14 22:34:21,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:34:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:21,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:21,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:23,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:23,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:26,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:26,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-14 22:34:26,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:34:26,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-14 22:34:26,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:26,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:26,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:34:26,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:34:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:34:26,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:26,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:34:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:26,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:26,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:26,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:34:26,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:26,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:34:26,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:26,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:26,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:34:26,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:26,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:34:26,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:27,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:34:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:27,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:27,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:27,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:34:27,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:27,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 22:34:27,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:27,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:27,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:34:27,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:34:27,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:34:27,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:34:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:27,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:27,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:27,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 22:34:27,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:27,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-14 22:34:27,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:27,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:34:27,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:34:27,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 22:34:27,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:27,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-14 22:34:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:27,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:27,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:27,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 22:34:27,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:27,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 22:34:27,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:27,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:34:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 22:34:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:34:27,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:34:27,570 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 277 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 22:34:27,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534657727] [2020-10-14 22:34:27,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:34:27,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:34:27,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355358582] [2020-10-14 22:34:27,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:34:27,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:34:27,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:34:27,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:34:27,573 INFO L87 Difference]: Start difference. First operand 19520 states and 25029 transitions. Second operand 7 states.