/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=BIGGEST --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/Problem13_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:44:06,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:44:06,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:44:06,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:44:06,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:44:06,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:44:06,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:44:06,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:44:06,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:44:06,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:44:06,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:44:06,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:44:06,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:44:06,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:44:06,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:44:06,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:44:06,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:44:06,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:44:06,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:44:06,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:44:06,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:44:06,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:44:06,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:44:06,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:44:06,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:44:06,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:44:06,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:44:06,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:44:06,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:44:06,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:44:06,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:44:06,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:44:06,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:44:06,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:44:06,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:44:06,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:44:06,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:44:06,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:44:06,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:44:06,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:44:06,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:44:06,362 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 [2020-10-12 13:44:06,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:44:06,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:44:06,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:44:06,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:44:06,407 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:44:06,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:44:06,407 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:44:06,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:44:06,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:44:06,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:44:06,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:44:06,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:44:06,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:44:06,410 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:44:06,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:44:06,411 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:44:06,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:44:06,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:44:06,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:44:06,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:44:06,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:44:06,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:44:06,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:44:06,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:44:06,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:44:06,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:44:06,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:44:06,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:44:06,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:44:06,413 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:44:06,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:44:06,787 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:44:06,793 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:44:06,796 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:44:06,796 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:44:06,797 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label39.c [2020-10-12 13:44:06,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7e58ce53/5c6c731c592f488391284ed6e4bf0970/FLAGc3f24fe7d [2020-10-12 13:44:07,819 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:44:07,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label39.c [2020-10-12 13:44:07,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7e58ce53/5c6c731c592f488391284ed6e4bf0970/FLAGc3f24fe7d [2020-10-12 13:44:08,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7e58ce53/5c6c731c592f488391284ed6e4bf0970 [2020-10-12 13:44:08,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:44:08,319 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:44:08,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:44:08,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:44:08,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:44:08,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:44:08" (1/1) ... [2020-10-12 13:44:08,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed487d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:08, skipping insertion in model container [2020-10-12 13:44:08,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:44:08" (1/1) ... [2020-10-12 13:44:08,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:44:08,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:44:10,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:44:10,451 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:44:11,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:44:11,281 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:44:11,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:11 WrapperNode [2020-10-12 13:44:11,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:44:11,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:44:11,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:44:11,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:44:11,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:11" (1/1) ... [2020-10-12 13:44:11,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:11" (1/1) ... [2020-10-12 13:44:11,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:11" (1/1) ... [2020-10-12 13:44:11,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:11" (1/1) ... [2020-10-12 13:44:11,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:11" (1/1) ... [2020-10-12 13:44:11,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:11" (1/1) ... [2020-10-12 13:44:11,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:11" (1/1) ... [2020-10-12 13:44:11,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:44:11,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:44:11,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:44:11,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:44:11,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:11" (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 [2020-10-12 13:44:11,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:44:11,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:44:11,853 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:44:11,853 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:44:11,853 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:44:11,853 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:44:11,853 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:44:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:44:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:44:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:44:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:44:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:44:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:44:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:44:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:44:11,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:44:11,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:44:24,555 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:44:24,556 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:44:24,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:44:24 BoogieIcfgContainer [2020-10-12 13:44:24,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:44:24,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:44:24,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:44:24,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:44:24,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:44:08" (1/3) ... [2020-10-12 13:44:24,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:44:24, skipping insertion in model container [2020-10-12 13:44:24,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:44:11" (2/3) ... [2020-10-12 13:44:24,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:44:24, skipping insertion in model container [2020-10-12 13:44:24,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:44:24" (3/3) ... [2020-10-12 13:44:24,584 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label39.c [2020-10-12 13:44:24,595 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:44:24,607 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:44:24,621 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:44:24,658 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:44:24,658 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:44:24,658 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:44:24,658 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:44:24,658 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:44:24,658 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:44:24,659 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:44:24,659 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:44:24,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-12 13:44:24,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 13:44:24,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:44:24,722 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] [2020-10-12 13:44:24,723 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:44:24,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:44:24,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1910105920, now seen corresponding path program 1 times [2020-10-12 13:44:24,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:44:24,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187276492] [2020-10-12 13:44:24,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:44:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:44:25,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:25,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:44:25,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 13:44:25,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:44:25,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-12 13:44:25,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:44:25,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:44:25,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:44:25,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 13:44:25,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:44:25,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:44:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:44:25,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:25,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:44:25,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:44:25,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:44:25,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 13:44:25,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:44:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:44:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:44:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:44:25,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:44:25,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:44:25,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187276492] [2020-10-12 13:44:25,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:44:25,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 13:44:25,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120029725] [2020-10-12 13:44:25,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:44:25,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:44:25,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:44:25,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:44:25,807 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-12 13:44:48,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:44:48,375 INFO L93 Difference]: Finished difference Result 4080 states and 7562 transitions. [2020-10-12 13:44:48,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:44:48,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-12 13:44:48,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:44:48,453 INFO L225 Difference]: With dead ends: 4080 [2020-10-12 13:44:48,453 INFO L226 Difference]: Without dead ends: 2872 [2020-10-12 13:44:48,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:44:48,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2020-10-12 13:44:48,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1934. [2020-10-12 13:44:48,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2020-10-12 13:44:48,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3163 transitions. [2020-10-12 13:44:48,689 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3163 transitions. Word has length 57 [2020-10-12 13:44:48,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:44:48,691 INFO L479 AbstractCegarLoop]: Abstraction has 1934 states and 3163 transitions. [2020-10-12 13:44:48,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:44:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3163 transitions. [2020-10-12 13:44:48,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-12 13:44:48,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:44:48,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:44:48,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:44:48,701 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:44:48,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:44:48,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1148002277, now seen corresponding path program 1 times [2020-10-12 13:44:48,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:44:48,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337206378] [2020-10-12 13:44:48,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:44:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:44:48,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:49,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:50,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:51,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:44:51,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-12 13:44:51,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:44:51,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3187 [2020-10-12 13:44:51,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:44:51,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:44:51,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:44:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:44:51,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:44:52,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:44:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:44:52,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:52,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:44:52,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:44:52,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:44:52,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 13:44:52,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:44:52,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:44:52,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:44:52,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:44:52,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:44:52,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:44:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:44:52,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:52,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:44:52,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:44:52,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:44:52,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-12 13:44:52,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:44:52,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:44:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:44:52,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:44:52,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:44:52,452 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:44:52,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337206378] [2020-10-12 13:44:52,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:44:52,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:44:52,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589850536] [2020-10-12 13:44:52,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:44:52,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:44:52,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:44:52,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:44:52,458 INFO L87 Difference]: Start difference. First operand 1934 states and 3163 transitions. Second operand 7 states. [2020-10-12 13:45:18,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:45:18,143 INFO L93 Difference]: Finished difference Result 5614 states and 9266 transitions. [2020-10-12 13:45:18,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:45:18,145 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-12 13:45:18,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:45:18,176 INFO L225 Difference]: With dead ends: 5614 [2020-10-12 13:45:18,176 INFO L226 Difference]: Without dead ends: 3686 [2020-10-12 13:45:18,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:45:18,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2020-10-12 13:45:18,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3615. [2020-10-12 13:45:18,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3615 states. [2020-10-12 13:45:18,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3615 states to 3615 states and 5139 transitions. [2020-10-12 13:45:18,301 INFO L78 Accepts]: Start accepts. Automaton has 3615 states and 5139 transitions. Word has length 132 [2020-10-12 13:45:18,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:45:18,302 INFO L479 AbstractCegarLoop]: Abstraction has 3615 states and 5139 transitions. [2020-10-12 13:45:18,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:45:18,302 INFO L276 IsEmpty]: Start isEmpty. Operand 3615 states and 5139 transitions. [2020-10-12 13:45:18,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-12 13:45:18,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:45:18,307 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:45:18,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:45:18,307 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:45:18,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:45:18,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1155693473, now seen corresponding path program 1 times [2020-10-12 13:45:18,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:45:18,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722532988] [2020-10-12 13:45:18,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:45:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:18,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:18,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:19,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:19,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 13:45:19,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:45:19,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1326 [2020-10-12 13:45:19,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:45:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:45:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:45:19,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:45:19,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:45:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:19,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:19,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:19,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:45:19,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:45:19,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:45:19,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:45:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:45:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:45:19,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:45:19,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:45:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:19,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:20,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:20,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 13:45:20,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:45:20,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-12 13:45:20,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:45:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:45:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 13:45:20,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:45:20,451 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:45:20,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722532988] [2020-10-12 13:45:20,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:45:20,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:45:20,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428297124] [2020-10-12 13:45:20,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:45:20,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:45:20,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:45:20,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:45:20,460 INFO L87 Difference]: Start difference. First operand 3615 states and 5139 transitions. Second operand 7 states. [2020-10-12 13:45:39,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:45:39,587 INFO L93 Difference]: Finished difference Result 8216 states and 11476 transitions. [2020-10-12 13:45:39,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:45:39,589 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-10-12 13:45:39,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:45:39,618 INFO L225 Difference]: With dead ends: 8216 [2020-10-12 13:45:39,618 INFO L226 Difference]: Without dead ends: 4607 [2020-10-12 13:45:39,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:45:39,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4607 states. [2020-10-12 13:45:39,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4607 to 4472. [2020-10-12 13:45:39,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4472 states. [2020-10-12 13:45:39,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 6093 transitions. [2020-10-12 13:45:39,785 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 6093 transitions. Word has length 162 [2020-10-12 13:45:39,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:45:39,789 INFO L479 AbstractCegarLoop]: Abstraction has 4472 states and 6093 transitions. [2020-10-12 13:45:39,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:45:39,789 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 6093 transitions. [2020-10-12 13:45:39,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-12 13:45:39,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:45:39,796 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:45:39,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:45:39,797 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:45:39,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:45:39,798 INFO L82 PathProgramCache]: Analyzing trace with hash -724485451, now seen corresponding path program 1 times [2020-10-12 13:45:39,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:45:39,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175341952] [2020-10-12 13:45:39,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:45:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:39,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:40,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:40,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:40,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-12 13:45:40,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:45:40,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1099 [2020-10-12 13:45:40,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:40,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:45:40,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:45:40,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-12 13:45:40,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:45:41,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:45:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:41,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:41,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:41,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:45:41,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:45:41,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:45:41,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:41,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:45:41,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:45:41,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:45:41,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:45:41,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:45:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:45:41,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:45:41,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:45:41,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 13:45:41,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:45:41,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-12 13:45:41,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:45:41,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:45:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:45:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 13:45:41,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:45:41,791 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:45:41,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175341952] [2020-10-12 13:45:41,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:45:41,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:45:41,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097611588] [2020-10-12 13:45:41,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:45:41,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:45:41,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:45:41,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:45:41,795 INFO L87 Difference]: Start difference. First operand 4472 states and 6093 transitions. Second operand 7 states. [2020-10-12 13:46:01,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:46:01,990 INFO L93 Difference]: Finished difference Result 9053 states and 12349 transitions. [2020-10-12 13:46:01,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 13:46:01,993 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-10-12 13:46:01,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:46:02,020 INFO L225 Difference]: With dead ends: 9053 [2020-10-12 13:46:02,020 INFO L226 Difference]: Without dead ends: 4587 [2020-10-12 13:46:02,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:46:02,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4587 states. [2020-10-12 13:46:02,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4587 to 4462. [2020-10-12 13:46:02,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4462 states. [2020-10-12 13:46:02,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 6030 transitions. [2020-10-12 13:46:02,183 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 6030 transitions. Word has length 172 [2020-10-12 13:46:02,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:46:02,185 INFO L479 AbstractCegarLoop]: Abstraction has 4462 states and 6030 transitions. [2020-10-12 13:46:02,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:46:02,186 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 6030 transitions. [2020-10-12 13:46:02,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-12 13:46:02,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:46:02,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:46:02,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:46:02,191 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:46:02,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:46:02,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1187251624, now seen corresponding path program 1 times [2020-10-12 13:46:02,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:46:02,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357450975] [2020-10-12 13:46:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:46:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:02,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:02,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:02,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-12 13:46:02,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:02,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-12 13:46:02,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:02,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:46:02,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-12 13:46:02,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 13:46:02,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:02,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:46:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:02,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:02,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:02,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:46:02,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:02,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:46:02,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:02,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:46:02,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:46:02,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:46:02,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:02,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:46:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:02,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:02,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:02,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 13:46:02,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:02,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-12 13:46:02,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:02,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:46:02,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:46:02,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 13:46:02,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:03,069 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:46:03,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357450975] [2020-10-12 13:46:03,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:46:03,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:46:03,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046830302] [2020-10-12 13:46:03,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:46:03,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:46:03,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:46:03,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:46:03,072 INFO L87 Difference]: Start difference. First operand 4462 states and 6030 transitions. Second operand 5 states. [2020-10-12 13:46:23,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:46:23,942 INFO L93 Difference]: Finished difference Result 8203 states and 12302 transitions. [2020-10-12 13:46:23,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:46:23,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-12 13:46:23,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:46:23,971 INFO L225 Difference]: With dead ends: 8203 [2020-10-12 13:46:23,974 INFO L226 Difference]: Without dead ends: 6200 [2020-10-12 13:46:23,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:46:23,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6200 states. [2020-10-12 13:46:24,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6200 to 6194. [2020-10-12 13:46:24,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6194 states. [2020-10-12 13:46:24,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6194 states to 6194 states and 8140 transitions. [2020-10-12 13:46:24,159 INFO L78 Accepts]: Start accepts. Automaton has 6194 states and 8140 transitions. Word has length 186 [2020-10-12 13:46:24,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:46:24,160 INFO L479 AbstractCegarLoop]: Abstraction has 6194 states and 8140 transitions. [2020-10-12 13:46:24,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:46:24,160 INFO L276 IsEmpty]: Start isEmpty. Operand 6194 states and 8140 transitions. [2020-10-12 13:46:24,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-12 13:46:24,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:46:24,166 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:46:24,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:46:24,167 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:46:24,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:46:24,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1249065788, now seen corresponding path program 1 times [2020-10-12 13:46:24,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:46:24,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498463674] [2020-10-12 13:46:24,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:46:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:24,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:24,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:24,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:25,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:26,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:26,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-12 13:46:26,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:46:26,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2645 [2020-10-12 13:46:26,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:26,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:46:26,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:46:26,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-12 13:46:26,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:26,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:46:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:26,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:27,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:27,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:46:27,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:27,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:46:27,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:46:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:46:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:46:27,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:46:27,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:46:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:27,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:27,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:27,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:27,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 13:46:27,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:46:27,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-12 13:46:27,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:27,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:46:27,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:46:27,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-12 13:46:27,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:27,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 13:46:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:27,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:27,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:27,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 13:46:27,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:27,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-12 13:46:27,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:27,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:46:27,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:46:27,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 13:46:27,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:27,800 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 13:46:27,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498463674] [2020-10-12 13:46:27,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:46:27,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:46:27,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581459204] [2020-10-12 13:46:27,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:46:27,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:46:27,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:46:27,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:46:27,803 INFO L87 Difference]: Start difference. First operand 6194 states and 8140 transitions. Second operand 7 states. [2020-10-12 13:46:53,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:46:53,665 INFO L93 Difference]: Finished difference Result 16723 states and 22935 transitions. [2020-10-12 13:46:53,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:46:53,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-10-12 13:46:53,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:46:53,768 INFO L225 Difference]: With dead ends: 16723 [2020-10-12 13:46:53,769 INFO L226 Difference]: Without dead ends: 11338 [2020-10-12 13:46:53,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:46:53,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11338 states. [2020-10-12 13:46:54,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11338 to 10450. [2020-10-12 13:46:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10450 states. [2020-10-12 13:46:54,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10450 states to 10450 states and 13204 transitions. [2020-10-12 13:46:54,054 INFO L78 Accepts]: Start accepts. Automaton has 10450 states and 13204 transitions. Word has length 258 [2020-10-12 13:46:54,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:46:54,056 INFO L479 AbstractCegarLoop]: Abstraction has 10450 states and 13204 transitions. [2020-10-12 13:46:54,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:46:54,056 INFO L276 IsEmpty]: Start isEmpty. Operand 10450 states and 13204 transitions. [2020-10-12 13:46:54,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-12 13:46:54,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:46:54,063 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:46:54,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:46:54,064 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:46:54,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:46:54,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1218681496, now seen corresponding path program 1 times [2020-10-12 13:46:54,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:46:54,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408043515] [2020-10-12 13:46:54,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:46:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:54,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:54,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:55,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:55,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-12 13:46:55,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:46:55,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1027 [2020-10-12 13:46:55,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:55,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:46:55,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 13:46:55,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 13:46:55,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:55,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:46:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:55,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:55,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:55,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:46:55,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:55,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:46:55,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:46:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:46:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:46:55,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:55,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:46:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:55,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:55,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:55,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 13:46:55,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:55,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-12 13:46:55,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:55,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:46:55,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:46:55,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:46:55,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:46:55,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 13:46:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:46:55,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:46:55,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:46:55,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 13:46:55,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:46:55,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-12 13:46:55,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:46:55,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:46:55,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:46:55,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 13:46:55,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:46:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:46:55,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408043515] [2020-10-12 13:46:55,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:46:55,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:46:55,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901291903] [2020-10-12 13:46:55,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:46:55,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:46:55,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:46:55,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:46:55,897 INFO L87 Difference]: Start difference. First operand 10450 states and 13204 transitions. Second operand 7 states. [2020-10-12 13:47:35,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:47:35,299 INFO L93 Difference]: Finished difference Result 28086 states and 37025 transitions. [2020-10-12 13:47:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:47:35,307 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2020-10-12 13:47:35,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:47:35,374 INFO L225 Difference]: With dead ends: 28086 [2020-10-12 13:47:35,374 INFO L226 Difference]: Without dead ends: 18445 [2020-10-12 13:47:35,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:47:35,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18445 states. [2020-10-12 13:47:35,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18445 to 17439. [2020-10-12 13:47:35,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17439 states. [2020-10-12 13:47:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17439 states to 17439 states and 22053 transitions. [2020-10-12 13:47:35,832 INFO L78 Accepts]: Start accepts. Automaton has 17439 states and 22053 transitions. Word has length 262 [2020-10-12 13:47:35,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:47:35,834 INFO L479 AbstractCegarLoop]: Abstraction has 17439 states and 22053 transitions. [2020-10-12 13:47:35,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:47:35,834 INFO L276 IsEmpty]: Start isEmpty. Operand 17439 states and 22053 transitions. [2020-10-12 13:47:35,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-12 13:47:35,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:47:35,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:47:35,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:47:35,842 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:47:35,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:47:35,843 INFO L82 PathProgramCache]: Analyzing trace with hash 638440069, now seen corresponding path program 1 times [2020-10-12 13:47:35,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:47:35,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301988969] [2020-10-12 13:47:35,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:47:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:47:35,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:36,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:47:36,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-12 13:47:36,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:47:36,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-12 13:47:36,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:47:36,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:47:36,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 232 [2020-10-12 13:47:36,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 13:47:36,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:47:36,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:47:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:47:36,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:36,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:47:36,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:47:36,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:47:36,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:47:36,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:47:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:47:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:47:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:47:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:47:36,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:47:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:47:36,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:36,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:47:36,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-12 13:47:36,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:47:36,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-12 13:47:36,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:47:36,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:47:36,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:47:36,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-12 13:47:36,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:47:37,120 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:47:37,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301988969] [2020-10-12 13:47:37,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:47:37,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:47:37,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69202815] [2020-10-12 13:47:37,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:47:37,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:47:37,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:47:37,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:47:37,123 INFO L87 Difference]: Start difference. First operand 17439 states and 22053 transitions. Second operand 5 states.