/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:45:39,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:45:39,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:45:39,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:45:39,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:45:39,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:45:39,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:45:39,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:45:39,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:45:39,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:45:39,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:45:39,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:45:39,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:45:39,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:45:39,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:45:39,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:45:39,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:45:39,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:45:39,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:45:39,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:45:39,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:45:39,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:45:39,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:45:39,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:45:39,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:45:39,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:45:39,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:45:39,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:45:39,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:45:39,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:45:39,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:45:39,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:45:39,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:45:39,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:45:39,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:45:39,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:45:39,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:45:39,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:45:39,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:45:39,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:45:39,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:45:39,690 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 05:45:39,743 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:45:39,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:45:39,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:45:39,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:45:39,746 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:45:39,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:45:39,747 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:45:39,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:45:39,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:45:39,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:45:39,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:45:39,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:45:39,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:45:39,749 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:45:39,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:45:39,750 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:45:39,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:45:39,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:45:39,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:45:39,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:45:39,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:45:39,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:45:39,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:45:39,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:45:39,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:45:39,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:45:39,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:45:39,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:45:39,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:45:39,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:45:40,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:45:40,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:45:40,267 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:45:40,269 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:45:40,270 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:45:40,271 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-09-25 05:45:40,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63e20448a/19651662351a492997e5f0e647314229/FLAG25b4d48d7 [2020-09-25 05:45:40,975 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:45:40,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-09-25 05:45:40,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63e20448a/19651662351a492997e5f0e647314229/FLAG25b4d48d7 [2020-09-25 05:45:41,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63e20448a/19651662351a492997e5f0e647314229 [2020-09-25 05:45:41,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:45:41,294 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:45:41,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:45:41,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:45:41,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:45:41,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:45:41" (1/1) ... [2020-09-25 05:45:41,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@91f500f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:41, skipping insertion in model container [2020-09-25 05:45:41,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:45:41" (1/1) ... [2020-09-25 05:45:41,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:45:41,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:45:41,578 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 05:45:41,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:45:41,616 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:45:41,743 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 05:45:41,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:45:41,780 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:45:41,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:41 WrapperNode [2020-09-25 05:45:41,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:45:41,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:45:41,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:45:41,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:45:41,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:41" (1/1) ... [2020-09-25 05:45:41,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:41" (1/1) ... [2020-09-25 05:45:41,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:41" (1/1) ... [2020-09-25 05:45:41,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:41" (1/1) ... [2020-09-25 05:45:41,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:41" (1/1) ... [2020-09-25 05:45:41,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:41" (1/1) ... [2020-09-25 05:45:41,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:41" (1/1) ... [2020-09-25 05:45:41,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:45:41,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:45:41,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:45:41,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:45:41,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:41" (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 05:45:41,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:45:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:45:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 05:45:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 05:45:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-25 05:45:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-25 05:45:41,943 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-25 05:45:41,943 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-25 05:45:41,943 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-25 05:45:41,943 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-25 05:45:41,944 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:45:41,944 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-25 05:45:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 05:45:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 05:45:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 05:45:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:45:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 05:45:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 05:45:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 05:45:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:45:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 05:45:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-25 05:45:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 05:45:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 05:45:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 05:45:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-25 05:45:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 05:45:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-25 05:45:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 05:45:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:45:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-25 05:45:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-25 05:45:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-25 05:45:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 05:45:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-25 05:45:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:45:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:45:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:45:42,620 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:45:42,621 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 05:45:42,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:45:42 BoogieIcfgContainer [2020-09-25 05:45:42,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:45:42,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:45:42,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:45:42,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:45:42,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:45:41" (1/3) ... [2020-09-25 05:45:42,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61dbb0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:45:42, skipping insertion in model container [2020-09-25 05:45:42,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:41" (2/3) ... [2020-09-25 05:45:42,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61dbb0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:45:42, skipping insertion in model container [2020-09-25 05:45:42,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:45:42" (3/3) ... [2020-09-25 05:45:42,640 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2020-09-25 05:45:42,654 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:45:42,667 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:45:42,693 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:45:42,731 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:45:42,732 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:45:42,732 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:45:42,732 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:45:42,732 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:45:42,732 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:45:42,733 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:45:42,733 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:45:42,764 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-09-25 05:45:42,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 05:45:42,779 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:45:42,781 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 05:45:42,781 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:45:42,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:45:42,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1732590877, now seen corresponding path program 1 times [2020-09-25 05:45:42,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:45:42,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457150973] [2020-09-25 05:45:42,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:45:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:43,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:43,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:43,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 05:45:43,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:43,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-09-25 05:45:43,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:43,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:43,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:45:43,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 05:45:43,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:45:43,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:45:43,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:45:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:43,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:43,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:43,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:45:43,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:43,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:45:43,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:43,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:43,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:45:43,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:43,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:45:43,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:43,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:45:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:43,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:43,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:43,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:45:43,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:43,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:45:43,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:43,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:43,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:45:43,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:43,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:45:43,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:43,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 05:45:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:43,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:43,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:43,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:45:43,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:43,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:45:43,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:43,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:43,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:45:43,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:43,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:45:43,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:43,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 05:45:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:43,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:43,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:43,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:45:43,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:43,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:45:43,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:43,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:45:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:43,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:45:43,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:43,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 05:45:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:43,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:43,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:43,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:45:43,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:43,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:45:43,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:43,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:43,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:45:43,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:45:43,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:45:43,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:44,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 05:45:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:44,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:44,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:44,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 05:45:44,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:44,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:45:44,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:44,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:45:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 05:45:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:45:44,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:44,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 05:45:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:44,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:44,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:44,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:45:44,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:44,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:45:44,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:44,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:44,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:45:44,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 05:45:44,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:45:44,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:44,101 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 05:45:44,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457150973] [2020-09-25 05:45:44,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:45:44,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 05:45:44,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005625095] [2020-09-25 05:45:44,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 05:45:44,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:45:44,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 05:45:44,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:45:44,137 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 11 states. [2020-09-25 05:45:45,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:45:45,442 INFO L93 Difference]: Finished difference Result 357 states and 415 transitions. [2020-09-25 05:45:45,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:45:45,445 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 05:45:45,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:45:45,464 INFO L225 Difference]: With dead ends: 357 [2020-09-25 05:45:45,464 INFO L226 Difference]: Without dead ends: 205 [2020-09-25 05:45:45,472 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 05:45:45,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-09-25 05:45:45,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 191. [2020-09-25 05:45:45,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 05:45:45,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 214 transitions. [2020-09-25 05:45:45,568 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 214 transitions. Word has length 60 [2020-09-25 05:45:45,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:45:45,569 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 214 transitions. [2020-09-25 05:45:45,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 05:45:45,570 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 214 transitions. [2020-09-25 05:45:45,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 05:45:45,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:45:45,582 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 05:45:45,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:45:45,583 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:45:45,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:45:45,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1923885975, now seen corresponding path program 1 times [2020-09-25 05:45:45,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:45:45,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819366238] [2020-09-25 05:45:45,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:45:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:45,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:45,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:46,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:50,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:50,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 05:45:50,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:45:50,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4661 [2020-09-25 05:45:50,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:50,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:50,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:45:50,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:45:50,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 05:45:50,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:45:50,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:45:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:50,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:50,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:50,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:45:50,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:50,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:45:50,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:50,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:50,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:45:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:45:50,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:50,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:45:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:50,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:50,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:50,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:45:50,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:50,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:45:50,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:50,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:45:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:45:50,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:50,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 05:45:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:50,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:50,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:50,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:45:50,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:50,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:45:50,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:50,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:50,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:45:50,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:50,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:45:50,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:50,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 05:45:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:50,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:50,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:50,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 05:45:50,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:50,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 05:45:50,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:50,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:50,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:45:50,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:50,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 05:45:50,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:50,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:45:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:50,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:50,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:50,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:45:50,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:50,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:45:50,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:50,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:50,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:45:50,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:50,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:45:50,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:50,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:45:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:50,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:50,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:50,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:45:50,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:50,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:45:50,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:50,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:45:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:45:50,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:50,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 05:45:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:50,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:50,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:50,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:45:50,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:50,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:45:50,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:50,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:50,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:45:50,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:50,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:45:50,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:50,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 05:45:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:50,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:50,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:50,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 05:45:50,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:50,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:45:50,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:50,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:50,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:45:50,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:50,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 05:45:50,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:50,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 05:45:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:50,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:50,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:50,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:45:50,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:50,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 05:45:50,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:50,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:50,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:45:50,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:45:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:45:50,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:50,705 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 05:45:50,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819366238] [2020-09-25 05:45:50,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:45:50,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 05:45:50,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567424461] [2020-09-25 05:45:50,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 05:45:50,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:45:50,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 05:45:50,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:45:50,710 INFO L87 Difference]: Start difference. First operand 191 states and 214 transitions. Second operand 11 states. [2020-09-25 05:45:52,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:45:52,036 INFO L93 Difference]: Finished difference Result 332 states and 374 transitions. [2020-09-25 05:45:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:45:52,037 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-25 05:45:52,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:45:52,043 INFO L225 Difference]: With dead ends: 332 [2020-09-25 05:45:52,044 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 05:45:52,046 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 05:45:52,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 05:45:52,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 195. [2020-09-25 05:45:52,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-09-25 05:45:52,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 219 transitions. [2020-09-25 05:45:52,070 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 219 transitions. Word has length 80 [2020-09-25 05:45:52,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:45:52,071 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 219 transitions. [2020-09-25 05:45:52,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 05:45:52,071 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 219 transitions. [2020-09-25 05:45:52,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 05:45:52,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:45:52,075 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 05:45:52,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:45:52,075 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:45:52,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:45:52,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1290663058, now seen corresponding path program 1 times [2020-09-25 05:45:52,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:45:52,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459344300] [2020-09-25 05:45:52,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:45:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:52,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:52,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:52,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:53,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:57,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:57,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 05:45:57,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:45:57,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:45:57,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:57,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:57,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:45:57,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:45:57,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 05:45:57,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:57,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:45:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:57,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:57,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:57,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:45:57,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:57,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:45:57,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:57,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:45:57,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:57,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:45:57,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:45:57,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:45:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:57,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:57,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:57,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:45:57,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:57,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 05:45:57,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:57,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:57,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:45:57,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:57,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:45:57,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:57,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 05:45:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:57,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:57,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:57,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:57,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:45:57,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:45:57,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 05:45:57,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:57,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:57,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:45:57,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:57,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:45:57,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:57,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 05:45:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:57,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:57,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:57,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:57,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 05:45:57,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:45:57,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 05:45:57,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:57,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:45:57,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:57,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:45:57,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:45:57,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:45:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:57,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:57,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:57,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:45:57,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:57,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:45:57,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:57,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:57,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:45:57,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:57,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:45:57,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:57,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:45:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:57,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:57,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:57,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:45:57,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:57,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:45:57,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:57,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:57,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:45:57,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:57,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:45:57,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:57,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 05:45:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:57,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:57,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:57,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:45:57,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:57,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:45:57,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:57,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:57,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:45:57,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:57,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:45:57,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:57,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 05:45:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:57,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:57,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:57,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 05:45:57,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:57,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:45:57,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:57,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:57,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:45:57,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:57,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 05:45:57,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:57,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 05:45:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:57,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:57,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:57,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 05:45:57,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:57,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 05:45:57,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:57,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:45:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:45:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 05:45:57,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:57,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:45:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:57,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:57,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:57,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:45:57,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:57,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:45:57,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:57,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:57,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:45:57,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:57,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:45:57,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:57,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:45:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:57,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:57,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:57,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:45:57,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:57,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:45:57,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:57,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:45:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:57,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:45:57,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:57,805 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 05:45:57,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459344300] [2020-09-25 05:45:57,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:45:57,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 05:45:57,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925114759] [2020-09-25 05:45:57,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 05:45:57,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:45:57,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 05:45:57,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:45:57,809 INFO L87 Difference]: Start difference. First operand 195 states and 219 transitions. Second operand 12 states. [2020-09-25 05:45:59,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:45:59,176 INFO L93 Difference]: Finished difference Result 351 states and 396 transitions. [2020-09-25 05:45:59,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 05:45:59,176 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-09-25 05:45:59,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:45:59,182 INFO L225 Difference]: With dead ends: 351 [2020-09-25 05:45:59,183 INFO L226 Difference]: Without dead ends: 206 [2020-09-25 05:45:59,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-09-25 05:45:59,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-25 05:45:59,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 197. [2020-09-25 05:45:59,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-09-25 05:45:59,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 222 transitions. [2020-09-25 05:45:59,235 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 222 transitions. Word has length 112 [2020-09-25 05:45:59,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:45:59,236 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 222 transitions. [2020-09-25 05:45:59,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 05:45:59,236 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 222 transitions. [2020-09-25 05:45:59,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 05:45:59,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:45:59,243 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:45:59,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:45:59,243 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:45:59,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:45:59,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1069363160, now seen corresponding path program 1 times [2020-09-25 05:45:59,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:45:59,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858722271] [2020-09-25 05:45:59,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:45:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:59,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:59,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:59,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:04,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:04,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 05:46:04,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:46:04,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 05:46:04,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:04,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:46:04,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 05:46:04,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 05:46:04,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:04,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:46:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:04,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:04,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:04,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:46:04,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:04,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:46:04,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:04,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:04,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:46:04,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:04,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:46:04,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:04,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:46:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:04,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:04,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:04,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:46:04,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:04,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 05:46:04,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:04,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:04,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:46:04,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:04,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:46:04,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:04,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:46:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:04,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:04,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:04,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:46:04,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:04,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:46:04,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:04,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:04,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:46:04,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:04,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:46:04,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:04,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 05:46:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:04,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:04,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:04,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:46:04,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:04,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:46:04,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:04,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:46:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:46:04,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:04,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:46:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:04,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:04,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:04,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:46:04,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:04,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:46:04,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:04,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:46:04,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:04,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:46:04,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:46:04,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 05:46:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:04,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:04,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:04,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 05:46:04,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:46:04,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 05:46:04,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:04,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:46:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:46:04,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:04,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:46:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:04,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:04,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:04,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:46:04,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:04,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:46:04,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:04,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:04,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:46:04,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:04,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:46:04,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:04,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:46:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:04,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:04,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:04,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:46:04,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:04,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:46:04,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:04,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:46:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:46:04,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:04,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 05:46:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:04,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:04,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:04,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:46:04,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:04,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:46:04,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:04,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:04,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:46:04,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:04,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:46:04,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:04,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 05:46:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:04,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:04,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:04,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 05:46:04,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:04,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:46:04,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:04,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:46:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 05:46:04,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:04,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 05:46:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:04,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:04,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:04,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 05:46:04,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:04,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 05:46:04,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:04,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:04,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:46:04,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 05:46:04,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 05:46:04,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:04,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:46:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:04,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:04,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:04,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:46:04,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:04,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:46:04,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:04,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:04,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:46:04,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:04,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:46:04,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:04,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:46:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:04,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:04,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:04,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:46:04,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:04,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:46:04,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:04,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:04,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:46:04,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:04,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:46:04,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:46:04,899 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 05:46:04,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858722271] [2020-09-25 05:46:04,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:46:04,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 05:46:04,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817099518] [2020-09-25 05:46:04,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 05:46:04,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:46:04,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 05:46:04,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:46:04,903 INFO L87 Difference]: Start difference. First operand 197 states and 222 transitions. Second operand 11 states. [2020-09-25 05:46:06,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:46:06,161 INFO L93 Difference]: Finished difference Result 350 states and 395 transitions. [2020-09-25 05:46:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:46:06,162 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 133 [2020-09-25 05:46:06,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:46:06,166 INFO L225 Difference]: With dead ends: 350 [2020-09-25 05:46:06,166 INFO L226 Difference]: Without dead ends: 208 [2020-09-25 05:46:06,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 05:46:06,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-09-25 05:46:06,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 199. [2020-09-25 05:46:06,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-09-25 05:46:06,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 225 transitions. [2020-09-25 05:46:06,184 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 225 transitions. Word has length 133 [2020-09-25 05:46:06,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:46:06,185 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 225 transitions. [2020-09-25 05:46:06,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 05:46:06,185 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 225 transitions. [2020-09-25 05:46:06,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 05:46:06,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:46:06,188 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] [2020-09-25 05:46:06,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:46:06,188 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:46:06,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:46:06,189 INFO L82 PathProgramCache]: Analyzing trace with hash 757817759, now seen corresponding path program 1 times [2020-09-25 05:46:06,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:46:06,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287789600] [2020-09-25 05:46:06,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:46:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:06,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:06,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:07,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:07,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 05:46:07,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:46:07,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1401 [2020-09-25 05:46:07,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:07,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:07,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:46:07,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 05:46:07,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:46:07,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:46:07,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:46:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:07,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:07,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:07,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:46:07,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:07,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:46:07,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:07,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:07,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:46:07,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:07,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:46:07,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:07,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:46:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:07,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:07,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:07,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:46:07,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:07,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 05:46:07,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:07,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:07,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:46:07,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:07,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:46:07,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:07,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 05:46:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:07,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:07,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:07,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:46:07,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:07,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 05:46:07,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:07,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:07,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:46:07,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:07,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:46:07,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:07,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 05:46:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:07,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:07,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:07,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:46:07,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:07,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:46:07,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:07,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:07,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:46:07,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:07,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:46:07,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:07,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 05:46:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:07,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:07,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:07,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:07,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 05:46:07,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:46:07,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 05:46:07,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:07,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:07,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:46:07,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:46:07,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:46:07,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:08,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:46:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:08,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:08,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:08,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:46:08,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:08,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:46:08,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:08,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:46:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:08,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:46:08,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:08,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-25 05:46:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:08,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:08,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:08,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:46:08,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:08,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:46:08,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:08,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:46:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:46:08,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:08,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 05:46:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:08,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:08,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:08,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 05:46:08,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:46:08,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:08,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:46:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 05:46:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:46:08,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:08,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 05:46:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:08,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:08,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:08,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:46:08,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:08,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:46:08,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:08,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:08,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:46:08,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:08,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:46:08,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:08,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:46:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:08,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:08,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:08,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:46:08,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:08,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:46:08,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:08,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:08,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:46:08,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:08,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:46:08,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:08,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-25 05:46:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:08,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:08,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:08,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:46:08,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:08,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:46:08,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:08,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:08,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:46:08,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:46:08,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:46:08,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:08,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 05:46:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:08,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:08,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:08,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 05:46:08,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:08,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:46:08,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:08,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:08,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:46:08,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 05:46:08,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:46:08,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:08,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 05:46:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:08,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:08,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:08,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 05:46:08,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:08,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 05:46:08,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:08,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:46:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:46:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:46:08,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:46:08,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 05:46:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:08,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:08,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:08,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:46:08,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:08,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:46:08,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:08,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:08,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:46:08,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:08,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:46:08,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:46:08,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 05:46:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:46:08,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:46:08,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:46:08,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:46:08,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:46:08,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:46:08,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:46:08,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:46:08,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:46:08,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:46:08,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:46:08,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:46:08,226 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-25 05:46:08,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287789600] [2020-09-25 05:46:08,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:46:08,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 05:46:08,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57860630] [2020-09-25 05:46:08,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 05:46:08,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:46:08,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 05:46:08,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:46:08,230 INFO L87 Difference]: Start difference. First operand 199 states and 225 transitions. Second operand 12 states. [2020-09-25 05:46:09,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:46:09,466 INFO L93 Difference]: Finished difference Result 375 states and 425 transitions. [2020-09-25 05:46:09,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:46:09,471 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 156 [2020-09-25 05:46:09,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:46:09,474 INFO L225 Difference]: With dead ends: 375 [2020-09-25 05:46:09,474 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 05:46:09,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-09-25 05:46:09,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 05:46:09,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 198. [2020-09-25 05:46:09,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-25 05:46:09,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 223 transitions. [2020-09-25 05:46:09,491 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 223 transitions. Word has length 156 [2020-09-25 05:46:09,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:46:09,492 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 223 transitions. [2020-09-25 05:46:09,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 05:46:09,492 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 223 transitions. [2020-09-25 05:46:09,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 05:46:09,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:46:09,495 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] [2020-09-25 05:46:09,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:46:09,495 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:46:09,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:46:09,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1025407455, now seen corresponding path program 1 times [2020-09-25 05:46:09,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:46:09,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145277372] [2020-09-25 05:46:09,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:46:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 05:46:09,540 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 05:46:09,540 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 05:46:09,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:46:09,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:46:09 BoogieIcfgContainer [2020-09-25 05:46:09,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:46:09,582 INFO L168 Benchmark]: Toolchain (without parser) took 28288.11 ms. Allocated memory was 145.8 MB in the beginning and 424.1 MB in the end (delta: 278.4 MB). Free memory was 101.3 MB in the beginning and 110.6 MB in the end (delta: -9.3 MB). Peak memory consumption was 269.1 MB. Max. memory is 7.1 GB. [2020-09-25 05:46:09,583 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 05:46:09,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.55 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 100.7 MB in the beginning and 179.9 MB in the end (delta: -79.2 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-09-25 05:46:09,586 INFO L168 Benchmark]: Boogie Preprocessor took 85.14 ms. Allocated memory is still 203.4 MB. Free memory was 179.9 MB in the beginning and 177.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-25 05:46:09,587 INFO L168 Benchmark]: RCFGBuilder took 761.94 ms. Allocated memory is still 203.4 MB. Free memory was 177.2 MB in the beginning and 133.7 MB in the end (delta: 43.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2020-09-25 05:46:09,588 INFO L168 Benchmark]: TraceAbstraction took 26944.78 ms. Allocated memory was 203.4 MB in the beginning and 424.1 MB in the end (delta: 220.7 MB). Free memory was 133.7 MB in the beginning and 110.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 243.8 MB. Max. memory is 7.1 GB. [2020-09-25 05:46:09,597 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 485.55 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 100.7 MB in the beginning and 179.9 MB in the end (delta: -79.2 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.14 ms. Allocated memory is still 203.4 MB. Free memory was 179.9 MB in the beginning and 177.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 761.94 ms. Allocated memory is still 203.4 MB. Free memory was 177.2 MB in the beginning and 133.7 MB in the end (delta: 43.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26944.78 ms. Allocated memory was 203.4 MB in the beginning and 424.1 MB in the end (delta: 220.7 MB). Free memory was 133.7 MB in the beginning and 110.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 243.8 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: [L103] 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; [L103] RET, EXPR nondet_tree() [L103] CALL task(nondet_tree()) [L81] CALL, EXPR min(t) [L35] COND FALSE !(!n) [L38] EXPR n->left [L38] CALL, EXPR min(n->left) [L35] COND TRUE !n [L36] return 2147483647; [L38] RET, EXPR min(n->left) [L38] int a = min(n->left); [L39] EXPR n->right [L39] CALL, EXPR min(n->right) [L35] COND TRUE !n [L36] return 2147483647; [L39] RET, EXPR min(n->right) [L39] int b = min(n->right); [L40] COND TRUE a <= b [L40] return a; [L81] RET, EXPR min(t) [L81] int a = min(t); [L82] int b; [L84] CALL, EXPR size(t) [L76] COND FALSE !(!t) [L77] EXPR t->left [L77] CALL, EXPR size(t->left) [L76] COND TRUE !t [L76] return 0; [L77] RET, EXPR size(t->left) [L77] EXPR t->right [L77] CALL, EXPR size(t->right) [L76] COND TRUE !t [L76] return 0; [L77] RET, EXPR size(t->right) [L77] return size(t->left) + size(t->right) + 1; [L84] RET, EXPR size(t) [L84] int n = size(t); [L85] CALL assume_abort_if_not(n != 0) [L10] COND FALSE !(!cond) [L85] RET assume_abort_if_not(n != 0) [L86] EXPR, FCALL calloc(n, sizeof(int)) [L86] int *x = calloc(n, sizeof(int)); [L87] CALL tree_inorder(t, x, n) [L65] COND FALSE !(!t) [L68] EXPR t->left [L68] CALL, EXPR tree_inorder(t->left, a, i) [L65] COND TRUE !t [L66] return i; [L68] RET, EXPR tree_inorder(t->left, a, i) [L68] i = tree_inorder(t->left, a, i) [L69] EXPR i++ [L69] EXPR t->data [L69] a[i++] = t->data [L70] EXPR t->right [L70] CALL, EXPR tree_inorder(t->right, a, i) [L65] COND TRUE !t [L66] return i; [L70] RET, EXPR tree_inorder(t->right, a, i) [L70] i = tree_inorder(t->right, a, i) [L71] return i; [L87] RET tree_inorder(t, x, n) [L88] EXPR x[0] [L88] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 199 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.8s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 871 SDtfs, 1760 SDslu, 2299 SDs, 0 SdLazy, 4406 SolverSat, 585 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 192 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred 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, 5 MinimizatonAttempts, 53 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 19.4s InterpolantComputationTime, 697 NumberOfCodeBlocks, 697 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 536 ConstructedInterpolants, 0 QuantifiedInterpolants, 199103 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 128/144 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...