/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_iter.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:41:25,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:41:25,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:41:25,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:41:25,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:41:25,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:41:25,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:41:25,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:41:25,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:41:25,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:41:25,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:41:25,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:41:25,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:41:25,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:41:25,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:41:25,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:41:25,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:41:25,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:41:25,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:41:25,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:41:25,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:41:25,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:41:25,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:41:25,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:41:25,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:41:25,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:41:25,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:41:25,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:41:25,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:41:25,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:41:25,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:41:25,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:41:25,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:41:25,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:41:25,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:41:25,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:41:25,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:41:25,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:41:25,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:41:25,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:41:25,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:41:25,531 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:41:25,583 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:41:25,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:41:25,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:41:25,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:41:25,586 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:41:25,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:41:25,586 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:41:25,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:41:25,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:41:25,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:41:25,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:41:25,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:41:25,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:41:25,589 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:41:25,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:41:25,590 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:41:25,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:41:25,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:41:25,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:41:25,591 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:41:25,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:41:25,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:41:25,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:41:25,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:41:25,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:41:25,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:41:25,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:41:25,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:41:25,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:41:25,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:41:26,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:41:26,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:41:26,090 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:41:26,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:41:26,094 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:41:26,095 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter.c [2020-09-25 13:41:26,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca0eb7af9/f95a0a0a55e24274b9e008865a9c4814/FLAG0108e5a02 [2020-09-25 13:41:26,749 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:41:26,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_iter.c [2020-09-25 13:41:26,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca0eb7af9/f95a0a0a55e24274b9e008865a9c4814/FLAG0108e5a02 [2020-09-25 13:41:27,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca0eb7af9/f95a0a0a55e24274b9e008865a9c4814 [2020-09-25 13:41:27,080 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:41:27,085 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:41:27,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:41:27,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:41:27,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:41:27,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:41:27" (1/1) ... [2020-09-25 13:41:27,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5adf6174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:27, skipping insertion in model container [2020-09-25 13:41:27,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:41:27" (1/1) ... [2020-09-25 13:41:27,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:41:27,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:41:27,382 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 13:41:27,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:41:27,418 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:41:27,443 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 13:41:27,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:41:27,569 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:41:27,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:27 WrapperNode [2020-09-25 13:41:27,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:41:27,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:41:27,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:41:27,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:41:27,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:27" (1/1) ... [2020-09-25 13:41:27,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:27" (1/1) ... [2020-09-25 13:41:27,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:27" (1/1) ... [2020-09-25 13:41:27,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:27" (1/1) ... [2020-09-25 13:41:27,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:27" (1/1) ... [2020-09-25 13:41:27,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:27" (1/1) ... [2020-09-25 13:41:27,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:27" (1/1) ... [2020-09-25 13:41:27,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:41:27,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:41:27,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:41:27,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:41:27,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:41:27,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:41:27,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:41:27,719 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_cycle_if_not [2020-09-25 13:41:27,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 13:41:27,720 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-25 13:41:27,720 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-25 13:41:27,720 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-25 13:41:27,720 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-25 13:41:27,721 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-25 13:41:27,721 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-25 13:41:27,721 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:41:27,721 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-25 13:41:27,721 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 13:41:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 13:41:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 13:41:27,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:41:27,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 13:41:27,724 INFO L130 BoogieDeclarations]: Found specification of procedure assume_cycle_if_not [2020-09-25 13:41:27,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:41:27,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 13:41:27,725 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-25 13:41:27,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 13:41:27,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 13:41:27,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 13:41:27,725 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-25 13:41:27,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 13:41:27,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 13:41:27,726 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-25 13:41:27,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:41:27,726 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-25 13:41:27,726 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-25 13:41:27,726 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-25 13:41:27,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 13:41:27,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-25 13:41:27,727 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:41:27,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:41:27,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:41:28,360 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:41:28,360 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 13:41:28,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:41:28 BoogieIcfgContainer [2020-09-25 13:41:28,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:41:28,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:41:28,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:41:28,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:41:28,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:41:27" (1/3) ... [2020-09-25 13:41:28,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c29e31c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:41:28, skipping insertion in model container [2020-09-25 13:41:28,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:41:27" (2/3) ... [2020-09-25 13:41:28,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c29e31c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:41:28, skipping insertion in model container [2020-09-25 13:41:28,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:41:28" (3/3) ... [2020-09-25 13:41:28,378 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_iter.c [2020-09-25 13:41:28,391 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:41:28,403 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:41:28,426 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:41:28,460 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:41:28,460 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:41:28,460 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:41:28,461 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:41:28,461 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:41:28,461 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:41:28,461 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:41:28,461 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:41:28,488 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-09-25 13:41:28,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 13:41:28,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:41:28,503 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] [2020-09-25 13:41:28,504 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:41:28,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:41:28,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1657225032, now seen corresponding path program 1 times [2020-09-25 13:41:28,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:41:28,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913417600] [2020-09-25 13:41:28,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:41:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:28,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:29,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:29,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 13:41:29,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:29,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 648 [2020-09-25 13:41:29,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:29,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:29,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:41:29,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 13:41:29,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:41:29,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:41:29,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:41:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:29,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:29,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:29,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:41:29,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:29,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:41:29,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:29,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:29,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:29,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:29,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:29,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:29,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:41:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:29,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:29,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:29,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:41:29,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:29,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:41:29,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:29,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:29,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:29,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:29,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:29,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:41:29,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 13:41:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:29,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:29,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:29,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:41:29,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:29,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:41:29,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:29,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:29,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:29,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:29,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:29,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:29,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 13:41:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:29,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:29,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:29,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:41:29,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:29,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:41:29,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:29,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:29,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:41:29,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:29,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:29,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:41:29,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:41:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:29,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:29,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:29,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:29,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:29,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:41:29,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:29,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:29,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:41:29,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:41:29,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:29,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:29,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 13:41:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:29,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:29,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:29,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 13:41:29,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:29,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:41:29,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:29,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 13:41:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:29,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:29,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 13:41:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:29,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:29,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:29,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:41:29,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:29,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:41:29,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:29,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:29,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:29,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 13:41:29,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:29,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:41:29,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913417600] [2020-09-25 13:41:29,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:41:29,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 13:41:29,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063741849] [2020-09-25 13:41:29,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:41:29,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:41:29,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:41:29,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:41:29,884 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 11 states. [2020-09-25 13:41:31,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:41:31,142 INFO L93 Difference]: Finished difference Result 366 states and 427 transitions. [2020-09-25 13:41:31,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:41:31,144 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 13:41:31,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:41:31,173 INFO L225 Difference]: With dead ends: 366 [2020-09-25 13:41:31,173 INFO L226 Difference]: Without dead ends: 210 [2020-09-25 13:41:31,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:41:31,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-09-25 13:41:31,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 196. [2020-09-25 13:41:31,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-25 13:41:31,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 220 transitions. [2020-09-25 13:41:31,262 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 220 transitions. Word has length 60 [2020-09-25 13:41:31,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:41:31,262 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 220 transitions. [2020-09-25 13:41:31,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:41:31,263 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 220 transitions. [2020-09-25 13:41:31,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 13:41:31,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:41:31,269 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 13:41:31,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:41:31,269 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:41:31,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:41:31,270 INFO L82 PathProgramCache]: Analyzing trace with hash -290171790, now seen corresponding path program 1 times [2020-09-25 13:41:31,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:41:31,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499059470] [2020-09-25 13:41:31,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:41:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:31,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:31,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:31,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:35,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:35,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 13:41:35,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:41:35,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4203 [2020-09-25 13:41:35,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:35,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:35,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:41:35,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 13:41:35,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 13:41:35,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:41:35,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:41:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:35,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:35,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:35,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:41:35,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:35,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:41:35,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:35,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:35,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:35,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:35,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:35,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:35,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:41:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:35,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:35,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:35,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:41:35,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:35,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:41:35,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:35,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:35,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:35,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:35,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:35,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:35,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 13:41:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:35,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:35,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:35,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:41:35,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:35,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:41:35,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:35,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:35,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:35,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:35,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 13:41:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:35,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:35,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:35,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 13:41:35,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:35,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 13:41:35,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:35,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:35,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:41:35,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:35,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 13:41:35,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:35,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:41:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:35,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:35,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:35,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:41:35,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:35,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:41:35,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:35,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:35,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:35,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:35,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:41:35,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:35,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:41:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:35,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:35,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:35,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:41:35,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:35,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:41:35,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:35,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:35,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:35,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:35,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:41:35,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:35,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 13:41:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:35,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:35,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:35,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:35,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:35,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:41:35,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:35,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:35,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:35,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:35,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:35,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:35,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 13:41:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:35,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:35,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:35,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 13:41:35,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:35,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:41:35,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:35,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:35,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:35,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:35,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:41:35,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:35,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 13:41:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:35,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:35,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:35,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:41:35,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:35,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:41:35,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:35,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:35,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:41:35,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:41:35,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:41:35,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:41:35,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499059470] [2020-09-25 13:41:35,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:41:35,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:41:35,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254163054] [2020-09-25 13:41:35,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:41:35,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:41:35,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:41:35,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:41:35,900 INFO L87 Difference]: Start difference. First operand 196 states and 220 transitions. Second operand 11 states. [2020-09-25 13:41:37,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:41:37,135 INFO L93 Difference]: Finished difference Result 337 states and 380 transitions. [2020-09-25 13:41:37,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:41:37,138 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-25 13:41:37,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:41:37,142 INFO L225 Difference]: With dead ends: 337 [2020-09-25 13:41:37,142 INFO L226 Difference]: Without dead ends: 212 [2020-09-25 13:41:37,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:41:37,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-25 13:41:37,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 200. [2020-09-25 13:41:37,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 13:41:37,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 225 transitions. [2020-09-25 13:41:37,168 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 225 transitions. Word has length 80 [2020-09-25 13:41:37,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:41:37,169 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 225 transitions. [2020-09-25 13:41:37,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:41:37,169 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 225 transitions. [2020-09-25 13:41:37,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 13:41:37,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:41:37,175 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-09-25 13:41:37,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:41:37,175 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:41:37,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:41:37,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1268161097, now seen corresponding path program 1 times [2020-09-25 13:41:37,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:41:37,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735013556] [2020-09-25 13:41:37,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:41:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:37,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:37,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:37,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:38,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:42,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:42,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 13:41:42,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:41:42,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 13:41:42,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:42,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:42,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:41:42,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 13:41:42,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 13:41:42,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:42,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:41:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:42,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:42,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:42,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:41:42,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:42,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:41:42,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:42,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:42,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:42,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:42,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:42,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:42,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:41:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:42,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:42,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:42,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:41:42,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:42,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:41:42,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:42,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:42,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:42,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:42,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:42,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:42,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 13:41:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:42,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:42,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:42,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:41:42,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:42,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:41:42,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:42,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:42,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:41:42,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:42,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:41:42,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:42,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 13:41:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:42,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:42,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:42,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:42,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 13:41:42,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:41:42,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 13:41:42,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:42,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:41:42,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:42,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:41:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:42,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:42,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:42,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:41:42,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:42,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:41:42,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:42,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:42,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:42,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:42,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:42,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:42,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:41:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:42,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:42,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:42,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:41:42,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:42,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:41:42,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:42,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:42,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:42,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:42,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:42,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:42,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 13:41:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:42,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:42,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:42,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:42,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:42,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:41:42,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:42,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:42,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:42,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:42,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:42,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:42,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 13:41:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:42,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:42,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:42,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 13:41:42,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:42,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:41:42,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:42,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:42,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:42,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:42,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:41:42,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:42,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 13:41:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:42,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:42,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:42,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 13:41:42,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:42,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 13:41:42,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:42,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:41:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:41:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 13:41:42,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:42,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:41:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:42,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:42,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:42,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:41:42,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:42,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:41:42,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:42,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:42,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:42,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:42,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:41:42,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:42,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 13:41:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:42,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:42,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:42,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:41:42,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:42,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:41:42,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:42,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:42,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:42,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:42,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:41:42,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 13:41:42,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735013556] [2020-09-25 13:41:42,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:41:42,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:41:42,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998494564] [2020-09-25 13:41:42,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:41:42,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:41:42,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:41:42,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:41:42,843 INFO L87 Difference]: Start difference. First operand 200 states and 225 transitions. Second operand 11 states. [2020-09-25 13:41:44,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:41:44,181 INFO L93 Difference]: Finished difference Result 356 states and 403 transitions. [2020-09-25 13:41:44,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:41:44,182 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112 [2020-09-25 13:41:44,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:41:44,188 INFO L225 Difference]: With dead ends: 356 [2020-09-25 13:41:44,191 INFO L226 Difference]: Without dead ends: 214 [2020-09-25 13:41:44,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:41:44,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-25 13:41:44,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 202. [2020-09-25 13:41:44,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-25 13:41:44,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 228 transitions. [2020-09-25 13:41:44,238 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 228 transitions. Word has length 112 [2020-09-25 13:41:44,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:41:44,239 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 228 transitions. [2020-09-25 13:41:44,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:41:44,239 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 228 transitions. [2020-09-25 13:41:44,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 13:41:44,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:41:44,247 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 13:41:44,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:41:44,249 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:41:44,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:41:44,249 INFO L82 PathProgramCache]: Analyzing trace with hash 311371809, now seen corresponding path program 1 times [2020-09-25 13:41:44,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:41:44,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053668523] [2020-09-25 13:41:44,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:41:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:44,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:44,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:44,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:49,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:49,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 13:41:49,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:41:49,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 13:41:49,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:49,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:41:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:41:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 13:41:49,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:49,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:41:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:49,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:49,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:49,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:41:49,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:49,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:41:49,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:49,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:49,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:49,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:49,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:49,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:49,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:41:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:49,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:49,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:49,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:41:49,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:49,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:41:49,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:49,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:49,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:41:49,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:49,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:49,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:49,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 13:41:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:49,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:49,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:49,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:49,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 13:41:49,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:41:49,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 13:41:49,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:49,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:49,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:49,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:49,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 13:41:49,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:49,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 13:41:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:49,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:49,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:49,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:41:49,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:49,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:41:49,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:49,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:49,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:49,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:49,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:49,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:49,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-25 13:41:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:49,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:49,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:49,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:41:49,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:49,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:41:49,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:49,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:49,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:49,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:41:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:49,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:49,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:49,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:49,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 13:41:49,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:41:49,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 13:41:49,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:49,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:49,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:49,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:49,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:41:49,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:49,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:41:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:49,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:49,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:49,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:41:49,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:49,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:41:49,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:49,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:49,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:49,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:49,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:49,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:49,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:41:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:49,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:49,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:49,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:41:49,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:49,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:41:49,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:49,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:49,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:49,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:49,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:49,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:49,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 13:41:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:49,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:49,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:49,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:49,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:49,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:41:49,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:49,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:49,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:49,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:49,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 13:41:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:49,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:49,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:49,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 13:41:49,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:49,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:41:49,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:49,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:49,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:49,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:49,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:41:49,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:49,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-25 13:41:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:49,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:49,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:49,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 13:41:49,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:49,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 13:41:49,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:49,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:49,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:41:49,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:41:49,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 13:41:49,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:50,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:41:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:50,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:50,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:50,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:41:50,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:50,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:41:50,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:50,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:50,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:50,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:50,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:41:50,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:41:50,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 13:41:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:50,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:50,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:50,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:41:50,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:50,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:41:50,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:50,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:41:50,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-25 13:41:50,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053668523] [2020-09-25 13:41:50,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:41:50,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:41:50,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092553460] [2020-09-25 13:41:50,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:41:50,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:41:50,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:41:50,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:41:50,109 INFO L87 Difference]: Start difference. First operand 202 states and 228 transitions. Second operand 12 states. [2020-09-25 13:41:51,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:41:51,743 INFO L93 Difference]: Finished difference Result 358 states and 405 transitions. [2020-09-25 13:41:51,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:41:51,744 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2020-09-25 13:41:51,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:41:51,748 INFO L225 Difference]: With dead ends: 358 [2020-09-25 13:41:51,748 INFO L226 Difference]: Without dead ends: 213 [2020-09-25 13:41:51,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-09-25 13:41:51,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-25 13:41:51,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 204. [2020-09-25 13:41:51,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-09-25 13:41:51,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 231 transitions. [2020-09-25 13:41:51,767 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 231 transitions. Word has length 138 [2020-09-25 13:41:51,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:41:51,767 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 231 transitions. [2020-09-25 13:41:51,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:41:51,767 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 231 transitions. [2020-09-25 13:41:51,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 13:41:51,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:41:51,770 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 13:41:51,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:41:51,770 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:41:51,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:41:51,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1130815571, now seen corresponding path program 1 times [2020-09-25 13:41:51,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:41:51,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696832469] [2020-09-25 13:41:51,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:41:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 13:41:51,814 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 13:41:51,814 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 13:41:51,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:41:51,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:41:51 BoogieIcfgContainer [2020-09-25 13:41:51,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:41:51,847 INFO L168 Benchmark]: Toolchain (without parser) took 24764.41 ms. Allocated memory was 145.8 MB in the beginning and 391.6 MB in the end (delta: 245.9 MB). Free memory was 101.8 MB in the beginning and 158.1 MB in the end (delta: -56.3 MB). Peak memory consumption was 189.6 MB. Max. memory is 7.1 GB. [2020-09-25 13:41:51,848 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 13:41:51,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 484.23 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 101.2 MB in the beginning and 181.2 MB in the end (delta: -80.0 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-25 13:41:51,849 INFO L168 Benchmark]: Boogie Preprocessor took 65.41 ms. Allocated memory is still 202.9 MB. Free memory was 181.2 MB in the beginning and 177.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-09-25 13:41:51,850 INFO L168 Benchmark]: RCFGBuilder took 732.28 ms. Allocated memory is still 202.9 MB. Free memory was 177.9 MB in the beginning and 133.0 MB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2020-09-25 13:41:51,851 INFO L168 Benchmark]: TraceAbstraction took 23474.07 ms. Allocated memory was 202.9 MB in the beginning and 391.6 MB in the end (delta: 188.7 MB). Free memory was 133.0 MB in the beginning and 158.1 MB in the end (delta: -25.1 MB). Peak memory consumption was 163.6 MB. Max. memory is 7.1 GB. [2020-09-25 13:41:51,854 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 484.23 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 101.2 MB in the beginning and 181.2 MB in the end (delta: -80.0 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.41 ms. Allocated memory is still 202.9 MB. Free memory was 181.2 MB in the beginning and 177.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 732.28 ms. Allocated memory is still 202.9 MB. Free memory was 177.9 MB in the beginning and 133.0 MB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23474.07 ms. Allocated memory was 202.9 MB in the beginning and 391.6 MB in the end (delta: 188.7 MB). Free memory was 133.0 MB in the beginning and 158.1 MB in the end (delta: -25.1 MB). Peak memory consumption was 163.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L108] CALL, EXPR nondet_tree() [L23] COND FALSE !(__VERIFIER_nondet_bool()) [L26] struct node *n = (struct node *)malloc(sizeof(struct node)); [L27] n->data = __VERIFIER_nondet_int() [L28] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L28] RET, EXPR nondet_tree() [L28] n->left = nondet_tree() [L29] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L29] RET, EXPR nondet_tree() [L29] n->right = nondet_tree() [L30] return n; [L108] RET, EXPR nondet_tree() [L108] CALL task(nondet_tree()) [L84] CALL, EXPR min(t) [L35] COND FALSE !(!n) [L38] EXPR n->data [L38] int a = n->data; [L39] EXPR n->left [L39] CALL, EXPR min(n->left) [L35] COND TRUE !n [L36] return 2147483647; [L39] RET, EXPR min(n->left) [L39] int b = min(n->left); [L40] EXPR n->right [L40] CALL, EXPR min(n->right) [L35] COND TRUE !n [L36] return 2147483647; [L40] RET, EXPR min(n->right) [L40] int c = min(n->right); [L41] COND TRUE b <= a && b <= c [L41] return b; [L84] RET, EXPR min(t) [L84] int a = min(t); [L85] int b; [L87] CALL, EXPR size(t) [L79] COND FALSE !(!t) [L80] EXPR t->left [L80] CALL, EXPR size(t->left) [L79] COND TRUE !t [L79] return 0; [L80] RET, EXPR size(t->left) [L80] EXPR t->right [L80] CALL, EXPR size(t->right) [L79] COND TRUE !t [L79] return 0; [L80] RET, EXPR size(t->right) [L80] return size(t->left) + size(t->right) + 1; [L87] RET, EXPR size(t) [L87] int n = size(t); [L88] CALL assume_cycle_if_not(n != 0) [L9] COND FALSE !(!cond) [L88] RET assume_cycle_if_not(n != 0) [L89] EXPR, FCALL calloc(n, sizeof(int)) [L89] int *x = calloc(n, sizeof(int)); [L90] CALL tree_inorder(t, x, n) [L68] COND FALSE !(!t) [L71] EXPR t->left [L71] CALL, EXPR tree_inorder(t->left, a, i) [L68] COND TRUE !t [L69] return i; [L71] RET, EXPR tree_inorder(t->left, a, i) [L71] i = tree_inorder(t->left, a, i) [L72] EXPR i++ [L72] EXPR t->data [L72] a[i++] = t->data [L73] EXPR t->right [L73] CALL, EXPR tree_inorder(t->right, a, i) [L68] COND TRUE !t [L69] return i; [L73] RET, EXPR tree_inorder(t->right, a, i) [L73] i = tree_inorder(t->right, a, i) [L74] return i; [L90] RET tree_inorder(t, x, n) [L91] EXPR x[0] [L91] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 206 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.3s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 722 SDtfs, 1629 SDslu, 1724 SDs, 0 SdLazy, 3544 SolverSat, 538 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 47 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.1s InterpolantComputationTime, 549 NumberOfCodeBlocks, 549 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 386 ConstructedInterpolants, 0 QuantifiedInterpolants, 204108 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 76/90 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...