/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 01:15:49,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 01:15:49,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 01:15:49,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 01:15:49,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 01:15:49,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 01:15:49,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 01:15:49,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 01:15:49,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 01:15:49,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 01:15:49,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 01:15:49,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 01:15:49,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 01:15:49,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 01:15:49,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 01:15:49,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 01:15:49,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 01:15:49,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 01:15:49,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 01:15:49,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 01:15:49,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 01:15:49,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 01:15:49,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 01:15:49,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 01:15:49,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 01:15:49,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 01:15:49,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 01:15:49,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 01:15:49,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 01:15:49,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 01:15:49,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 01:15:49,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 01:15:49,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 01:15:49,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 01:15:49,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 01:15:49,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 01:15:49,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 01:15:49,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 01:15:49,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 01:15:49,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 01:15:49,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 01:15:49,762 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 01:15:49,811 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 01:15:49,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 01:15:49,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 01:15:49,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 01:15:49,814 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 01:15:49,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 01:15:49,814 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 01:15:49,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 01:15:49,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 01:15:49,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 01:15:49,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 01:15:49,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 01:15:49,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 01:15:49,817 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 01:15:49,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 01:15:49,817 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 01:15:49,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 01:15:49,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 01:15:49,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 01:15:49,818 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 01:15:49,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 01:15:49,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 01:15:49,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 01:15:49,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 01:15:49,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 01:15:49,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 01:15:49,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 01:15:49,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 01:15:49,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 01:15:49,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 01:15:50,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 01:15:50,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 01:15:50,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 01:15:50,267 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 01:15:50,268 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 01:15:50,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-10-28 01:15:50,347 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33a631cf3/8c89ad88d42f4f8997c553f8421bb60a/FLAG87688bc2b [2020-10-28 01:15:50,950 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 01:15:50,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-10-28 01:15:50,960 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33a631cf3/8c89ad88d42f4f8997c553f8421bb60a/FLAG87688bc2b [2020-10-28 01:15:51,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33a631cf3/8c89ad88d42f4f8997c553f8421bb60a [2020-10-28 01:15:51,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 01:15:51,319 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 01:15:51,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 01:15:51,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 01:15:51,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 01:15:51,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:15:51" (1/1) ... [2020-10-28 01:15:51,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f363466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:51, skipping insertion in model container [2020-10-28 01:15:51,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:15:51" (1/1) ... [2020-10-28 01:15:51,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 01:15:51,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 01:15:51,587 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-28 01:15:51,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 01:15:51,644 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 01:15:51,695 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-28 01:15:51,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 01:15:51,767 INFO L208 MainTranslator]: Completed translation [2020-10-28 01:15:51,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:51 WrapperNode [2020-10-28 01:15:51,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 01:15:51,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 01:15:51,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 01:15:51,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 01:15:51,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:51" (1/1) ... [2020-10-28 01:15:51,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:51" (1/1) ... [2020-10-28 01:15:51,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:51" (1/1) ... [2020-10-28 01:15:51,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:51" (1/1) ... [2020-10-28 01:15:51,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:51" (1/1) ... [2020-10-28 01:15:51,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:51" (1/1) ... [2020-10-28 01:15:51,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:51" (1/1) ... [2020-10-28 01:15:51,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 01:15:51,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 01:15:51,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 01:15:51,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 01:15:51,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 01:15:51,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 01:15:51,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 01:15:51,959 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 01:15:51,959 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 01:15:51,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 01:15:51,959 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-10-28 01:15:51,959 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-10-28 01:15:51,960 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-10-28 01:15:51,960 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-10-28 01:15:51,960 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-10-28 01:15:51,960 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-10-28 01:15:51,960 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 01:15:51,960 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-28 01:15:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 01:15:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 01:15:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 01:15:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 01:15:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 01:15:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 01:15:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 01:15:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 01:15:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 01:15:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 01:15:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 01:15:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-10-28 01:15:51,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 01:15:51,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 01:15:51,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 01:15:51,963 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-10-28 01:15:51,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 01:15:51,963 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-10-28 01:15:51,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 01:15:51,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 01:15:51,964 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-10-28 01:15:51,964 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-10-28 01:15:51,964 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-10-28 01:15:51,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-28 01:15:51,964 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 01:15:51,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 01:15:51,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 01:15:51,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 01:15:52,631 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 01:15:52,631 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 01:15:52,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:15:52 BoogieIcfgContainer [2020-10-28 01:15:52,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 01:15:52,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 01:15:52,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 01:15:52,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 01:15:52,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:15:51" (1/3) ... [2020-10-28 01:15:52,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5108c2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:15:52, skipping insertion in model container [2020-10-28 01:15:52,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:51" (2/3) ... [2020-10-28 01:15:52,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5108c2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:15:52, skipping insertion in model container [2020-10-28 01:15:52,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:15:52" (3/3) ... [2020-10-28 01:15:52,646 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2020-10-28 01:15:52,661 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 01:15:52,666 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 01:15:52,690 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 01:15:52,725 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 01:15:52,725 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 01:15:52,725 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 01:15:52,725 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 01:15:52,726 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 01:15:52,726 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 01:15:52,726 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 01:15:52,726 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 01:15:52,746 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2020-10-28 01:15:52,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 01:15:52,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:15:52,757 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] [2020-10-28 01:15:52,757 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:15:52,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:15:52,764 INFO L82 PathProgramCache]: Analyzing trace with hash 51345433, now seen corresponding path program 1 times [2020-10-28 01:15:52,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:15:52,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750075968] [2020-10-28 01:15:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:15:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:53,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:53,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:53,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 01:15:53,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:53,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-28 01:15:53,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 01:15:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:53,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 01:15:53,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:15:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:53,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:53,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:53,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:53,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:53,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 01:15:53,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:53,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:53,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:53,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:53,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:53,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:15:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:53,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:53,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:53,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:53,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:53,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 01:15:53,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:53,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:15:53,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:15:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:53,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:53,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:53,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:53,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:53,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:15:53,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:53,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:15:53,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:15:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:53,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:53,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:53,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:53,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:53,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:15:53,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:53,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:53,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:53,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:53,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:15:53,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 01:15:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:53,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:53,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:53,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:53,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:53,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:15:53,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:53,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:53,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 01:15:53,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:53,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:53,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:15:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:53,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:53,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:53,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:53,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:53,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:15:53,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 01:15:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:53,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:15:53,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 01:15:53,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:53,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:53,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:53,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:53,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:53,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:15:53,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:53,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:53,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 01:15:53,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:53,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:15:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:15:53,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750075968] [2020-10-28 01:15:53,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:15:53,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 01:15:53,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875803154] [2020-10-28 01:15:53,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 01:15:53,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:15:53,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 01:15:53,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 01:15:53,503 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 6 states. [2020-10-28 01:15:54,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:15:54,077 INFO L93 Difference]: Finished difference Result 173 states and 227 transitions. [2020-10-28 01:15:54,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:15:54,079 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-28 01:15:54,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:15:54,092 INFO L225 Difference]: With dead ends: 173 [2020-10-28 01:15:54,092 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 01:15:54,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:15:54,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 01:15:54,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 89. [2020-10-28 01:15:54,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-28 01:15:54,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 110 transitions. [2020-10-28 01:15:54,160 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 110 transitions. Word has length 45 [2020-10-28 01:15:54,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:15:54,161 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 110 transitions. [2020-10-28 01:15:54,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 01:15:54,161 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 110 transitions. [2020-10-28 01:15:54,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 01:15:54,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:15:54,165 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] [2020-10-28 01:15:54,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 01:15:54,166 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:15:54,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:15:54,167 INFO L82 PathProgramCache]: Analyzing trace with hash -766303017, now seen corresponding path program 1 times [2020-10-28 01:15:54,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:15:54,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970045486] [2020-10-28 01:15:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:15:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:54,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:54,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:54,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 01:15:54,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:54,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-28 01:15:54,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:54,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:15:54,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 01:15:54,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:15:54,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:15:54,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:15:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:54,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:54,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:54,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:54,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:54,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 01:15:54,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:54,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:54,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:54,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:54,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:15:54,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:15:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:54,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:54,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:54,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:54,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:54,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:15:54,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:54,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:54,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:54,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:54,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:54,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:15:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:54,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:54,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:54,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:54,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:54,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:15:54,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:54,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:54,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:54,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:54,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:54,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:15:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:54,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:54,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:54,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:54,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:54,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:15:54,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:54,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 01:15:54,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:54,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 01:15:54,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:54,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 01:15:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:54,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:54,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:54,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:54,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:54,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:15:54,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:15:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:15:54,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:15:54,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:54,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 01:15:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:54,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:54,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:54,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:54,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:54,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:15:54,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:54,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:54,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 01:15:54,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:54,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:54,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 01:15:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:54,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:54,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:54,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:54,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:54,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:15:54,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:54,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:54,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 01:15:54,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:54,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:54,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:15:54,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970045486] [2020-10-28 01:15:54,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:15:54,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 01:15:54,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798348861] [2020-10-28 01:15:54,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 01:15:54,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:15:54,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 01:15:54,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-28 01:15:54,985 INFO L87 Difference]: Start difference. First operand 89 states and 110 transitions. Second operand 11 states. [2020-10-28 01:15:55,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:15:55,996 INFO L93 Difference]: Finished difference Result 156 states and 199 transitions. [2020-10-28 01:15:55,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 01:15:55,996 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-28 01:15:55,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:15:56,000 INFO L225 Difference]: With dead ends: 156 [2020-10-28 01:15:56,000 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 01:15:56,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-28 01:15:56,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 01:15:56,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 91. [2020-10-28 01:15:56,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-28 01:15:56,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 114 transitions. [2020-10-28 01:15:56,022 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 114 transitions. Word has length 45 [2020-10-28 01:15:56,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:15:56,022 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 114 transitions. [2020-10-28 01:15:56,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 01:15:56,022 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 114 transitions. [2020-10-28 01:15:56,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 01:15:56,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:15:56,028 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-28 01:15:56,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 01:15:56,028 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:15:56,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:15:56,029 INFO L82 PathProgramCache]: Analyzing trace with hash 557373118, now seen corresponding path program 1 times [2020-10-28 01:15:56,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:15:56,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126894380] [2020-10-28 01:15:56,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:15:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:56,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:56,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:56,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:59,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 01:15:59,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:15:59,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3136 [2020-10-28 01:15:59,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:15:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 01:15:59,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 01:15:59,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:15:59,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:15:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:59,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:59,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:59,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:59,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:15:59,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:59,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:59,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:59,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:59,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:59,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:15:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:59,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:59,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:59,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:59,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:15:59,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:59,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:59,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:59,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:15:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:59,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:59,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:59,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:59,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:15:59,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:59,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:59,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:59,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:59,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:15:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:59,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:59,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 01:15:59,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:59,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 01:15:59,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:59,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:15:59,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:59,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 01:15:59,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:59,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:15:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:59,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:59,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:59,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:59,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:15:59,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:59,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:15:59,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:59,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:15:59,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:59,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:15:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:59,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:59,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:59,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:59,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:15:59,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:59,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:15:59,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:59,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:15:59,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:59,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 01:15:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:59,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:59,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:59,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:59,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:15:59,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:59,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:15:59,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:59,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:15:59,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:59,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 01:15:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:59,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:59,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:59,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:59,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:15:59,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:15:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 01:15:59,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:59,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 01:15:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:59,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:59,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:59,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:59,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:15:59,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:15:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:15:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:15:59,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 01:15:59,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126894380] [2020-10-28 01:15:59,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:15:59,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 01:15:59,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572184162] [2020-10-28 01:15:59,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 01:15:59,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:15:59,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 01:15:59,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-28 01:15:59,520 INFO L87 Difference]: Start difference. First operand 91 states and 114 transitions. Second operand 11 states. [2020-10-28 01:16:00,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:16:00,746 INFO L93 Difference]: Finished difference Result 156 states and 197 transitions. [2020-10-28 01:16:00,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 01:16:00,751 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-28 01:16:00,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:16:00,754 INFO L225 Difference]: With dead ends: 156 [2020-10-28 01:16:00,754 INFO L226 Difference]: Without dead ends: 102 [2020-10-28 01:16:00,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-10-28 01:16:00,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-28 01:16:00,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 97. [2020-10-28 01:16:00,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-28 01:16:00,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 122 transitions. [2020-10-28 01:16:00,786 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 122 transitions. Word has length 57 [2020-10-28 01:16:00,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:16:00,786 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 122 transitions. [2020-10-28 01:16:00,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 01:16:00,786 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 122 transitions. [2020-10-28 01:16:00,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 01:16:00,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:16:00,788 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-28 01:16:00,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 01:16:00,789 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:16:00,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:16:00,789 INFO L82 PathProgramCache]: Analyzing trace with hash -348500245, now seen corresponding path program 1 times [2020-10-28 01:16:00,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:16:00,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300367397] [2020-10-28 01:16:00,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:16:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:00,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:00,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:00,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:01,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:04,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:04,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 01:16:04,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 01:16:04,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3264 [2020-10-28 01:16:04,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:04,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:16:04,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 01:16:04,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 01:16:04,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:04,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:16:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:04,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:04,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:04,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:04,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:04,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:16:04,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:04,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:04,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:04,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:04,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:04,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:16:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:04,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:04,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:04,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:04,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:04,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:16:04,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:04,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:04,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:04,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:04,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:04,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:16:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:04,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:04,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:04,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:04,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:04,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:16:04,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:04,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:16:04,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:04,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:16:04,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:04,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:16:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:04,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:04,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:04,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:04,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 01:16:04,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:16:04,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 01:16:04,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:04,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:16:04,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:16:04,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 01:16:04,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:04,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:16:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:04,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:04,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:04,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:04,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:04,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:16:04,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:04,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:04,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:16:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:04,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:04,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:04,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:04,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:04,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:16:04,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:04,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:04,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:04,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:04,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:04,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 01:16:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:04,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:04,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:04,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:04,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:04,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:16:04,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:04,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:04,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:04,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:04,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 01:16:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:04,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:04,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:04,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:04,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:04,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:16:04,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 01:16:04,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:04,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 01:16:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:04,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:04,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:04,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 01:16:04,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:04,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 01:16:04,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:04,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:16:04,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:16:04,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 01:16:04,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:04,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:16:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:04,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:04,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:04,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:04,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:04,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:16:04,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:04,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:04,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:04,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:04,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:04,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:16:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:04,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:04,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:04,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:04,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:04,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:16:04,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:04,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:04,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:04,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:04,557 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 01:16:04,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300367397] [2020-10-28 01:16:04,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:16:04,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 01:16:04,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526587675] [2020-10-28 01:16:04,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 01:16:04,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:16:04,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 01:16:04,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-28 01:16:04,560 INFO L87 Difference]: Start difference. First operand 97 states and 122 transitions. Second operand 13 states. [2020-10-28 01:16:06,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:16:06,162 INFO L93 Difference]: Finished difference Result 176 states and 223 transitions. [2020-10-28 01:16:06,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 01:16:06,163 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-10-28 01:16:06,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:16:06,166 INFO L225 Difference]: With dead ends: 176 [2020-10-28 01:16:06,166 INFO L226 Difference]: Without dead ends: 104 [2020-10-28 01:16:06,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-28 01:16:06,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-28 01:16:06,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 99. [2020-10-28 01:16:06,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 01:16:06,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2020-10-28 01:16:06,200 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 69 [2020-10-28 01:16:06,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:16:06,201 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2020-10-28 01:16:06,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 01:16:06,201 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2020-10-28 01:16:06,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 01:16:06,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:16:06,203 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-28 01:16:06,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 01:16:06,204 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:16:06,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:16:06,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1659395844, now seen corresponding path program 1 times [2020-10-28 01:16:06,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:16:06,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018343318] [2020-10-28 01:16:06,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:16:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:06,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:06,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:06,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:11,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:11,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 01:16:11,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:16:11,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 01:16:11,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:16:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 01:16:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 01:16:11,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:11,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:16:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:11,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:11,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:11,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:11,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:11,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:16:11,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:11,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:16:11,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:11,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:16:11,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:11,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:16:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:11,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:11,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:11,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:11,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:11,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:16:11,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:11,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 01:16:11,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:11,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 01:16:11,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:11,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:16:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:11,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:11,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:11,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:11,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 01:16:11,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:16:11,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 01:16:11,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:11,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:16:11,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:16:11,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 01:16:11,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:11,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:16:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:11,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:11,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:11,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:11,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:11,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:16:11,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:11,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:11,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:11,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:11,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:11,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:16:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:11,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:11,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:11,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:11,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:11,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:16:11,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:11,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:11,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:11,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:11,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:11,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 01:16:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:11,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:11,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:11,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:11,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 01:16:11,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:16:11,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 01:16:11,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:11,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:16:11,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:16:11,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 01:16:11,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:11,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:16:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:11,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:11,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:11,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:11,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:11,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:16:11,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:11,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:11,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:11,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:11,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:11,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:16:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:11,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:11,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:11,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:11,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:11,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:16:11,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:11,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:11,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:11,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:11,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:11,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 01:16:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:11,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:11,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:11,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:11,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:11,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:16:11,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:11,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:11,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:11,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:11,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:11,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 01:16:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:11,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:11,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:11,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:16:11,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:11,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:16:11,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:11,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:11,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:11,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 01:16:11,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:11,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 01:16:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:11,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:11,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:11,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 01:16:11,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:11,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 01:16:11,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:16:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:16:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 01:16:11,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:11,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 01:16:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:11,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:11,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:11,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:11,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:11,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:16:11,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:11,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:11,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:11,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:11,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:11,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 01:16:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:11,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:11,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:11,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:16:11,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:16:11,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:16:11,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:16:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:16:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:16:11,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:11,960 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 01:16:11,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018343318] [2020-10-28 01:16:11,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:16:11,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 01:16:11,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371491713] [2020-10-28 01:16:11,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 01:16:11,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:16:11,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 01:16:11,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-28 01:16:11,968 INFO L87 Difference]: Start difference. First operand 99 states and 125 transitions. Second operand 16 states. [2020-10-28 01:16:13,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:16:13,732 INFO L93 Difference]: Finished difference Result 178 states and 225 transitions. [2020-10-28 01:16:13,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 01:16:13,733 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 82 [2020-10-28 01:16:13,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:16:13,735 INFO L225 Difference]: With dead ends: 178 [2020-10-28 01:16:13,735 INFO L226 Difference]: Without dead ends: 103 [2020-10-28 01:16:13,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2020-10-28 01:16:13,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-28 01:16:13,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2020-10-28 01:16:13,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-28 01:16:13,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 128 transitions. [2020-10-28 01:16:13,757 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 128 transitions. Word has length 82 [2020-10-28 01:16:13,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:16:13,757 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 128 transitions. [2020-10-28 01:16:13,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 01:16:13,757 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 128 transitions. [2020-10-28 01:16:13,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 01:16:13,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:16:13,759 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-28 01:16:13,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 01:16:13,760 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:16:13,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:16:13,760 INFO L82 PathProgramCache]: Analyzing trace with hash 918285121, now seen corresponding path program 1 times [2020-10-28 01:16:13,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:16:13,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755925390] [2020-10-28 01:16:13,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:16:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 01:16:13,795 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 01:16:13,795 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 01:16:13,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 01:16:13,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 01:16:13 BoogieIcfgContainer [2020-10-28 01:16:13,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 01:16:13,826 INFO L168 Benchmark]: Toolchain (without parser) took 22511.68 ms. Allocated memory was 153.1 MB in the beginning and 407.9 MB in the end (delta: 254.8 MB). Free memory was 128.6 MB in the beginning and 319.2 MB in the end (delta: -190.6 MB). Peak memory consumption was 65.1 MB. Max. memory is 8.0 GB. [2020-10-28 01:16:13,827 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 153.1 MB. Free memory is still 125.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 01:16:13,827 INFO L168 Benchmark]: CACSL2BoogieTranslator took 447.80 ms. Allocated memory is still 153.1 MB. Free memory was 127.9 MB in the beginning and 116.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-28 01:16:13,828 INFO L168 Benchmark]: Boogie Preprocessor took 104.72 ms. Allocated memory is still 153.1 MB. Free memory was 116.2 MB in the beginning and 113.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 01:16:13,829 INFO L168 Benchmark]: RCFGBuilder took 757.93 ms. Allocated memory is still 153.1 MB. Free memory was 113.9 MB in the beginning and 117.0 MB in the end (delta: -3.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. [2020-10-28 01:16:13,830 INFO L168 Benchmark]: TraceAbstraction took 21188.04 ms. Allocated memory was 153.1 MB in the beginning and 407.9 MB in the end (delta: 254.8 MB). Free memory was 116.5 MB in the beginning and 319.2 MB in the end (delta: -202.8 MB). Peak memory consumption was 52.0 MB. Max. memory is 8.0 GB. [2020-10-28 01:16:13,833 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 153.1 MB. Free memory is still 125.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 447.80 ms. Allocated memory is still 153.1 MB. Free memory was 127.9 MB in the beginning and 116.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 104.72 ms. Allocated memory is still 153.1 MB. Free memory was 116.2 MB in the beginning and 113.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 757.93 ms. Allocated memory is still 153.1 MB. Free memory was 113.9 MB in the beginning and 117.0 MB in the end (delta: -3.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21188.04 ms. Allocated memory was 153.1 MB in the beginning and 407.9 MB in the end (delta: 254.8 MB). Free memory was 116.5 MB in the beginning and 319.2 MB in the end (delta: -202.8 MB). Peak memory consumption was 52.0 MB. Max. memory is 8.0 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: [L105] CALL, EXPR nondet_tree() [L25] COND FALSE !(__VERIFIER_nondet_bool()) [L28] struct node *n = (struct node *)malloc(sizeof(struct node)); [L29] n->data = __VERIFIER_nondet_int() [L30] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; [L30] RET, EXPR nondet_tree() [L30] n->left = nondet_tree() [L31] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; [L31] RET, EXPR nondet_tree() [L31] n->right = nondet_tree() [L32] return n; [L105] RET, EXPR nondet_tree() [L105] CALL task(nondet_tree()) [L83] CALL, EXPR min(t) [L37] COND FALSE !(!n) [L40] EXPR n->left [L40] CALL, EXPR min(n->left) [L37] COND TRUE !n [L38] return 2147483647; [L40] RET, EXPR min(n->left) [L40] int a = min(n->left); [L41] EXPR n->right [L41] CALL, EXPR min(n->right) [L37] COND TRUE !n [L38] return 2147483647; [L41] RET, EXPR min(n->right) [L41] int b = min(n->right); [L42] COND TRUE a <= b [L42] return a; [L83] RET, EXPR min(t) [L83] int a = min(t); [L84] int b; [L86] CALL, EXPR size(t) [L78] COND FALSE !(!t) [L79] EXPR t->left [L79] CALL, EXPR size(t->left) [L78] COND TRUE !t [L78] return 0; [L79] RET, EXPR size(t->left) [L79] EXPR t->right [L79] CALL, EXPR size(t->right) [L78] COND TRUE !t [L78] return 0; [L79] RET, EXPR size(t->right) [L79] return size(t->left) + size(t->right) + 1; [L86] RET, EXPR size(t) [L86] int n = size(t); [L87] CALL assume_abort_if_not(n != 0) [L10] COND FALSE !(!cond) [L87] RET assume_abort_if_not(n != 0) [L88] EXPR, FCALL calloc(n, sizeof(int)) [L88] int *x = calloc(n, sizeof(int)); [L89] CALL tree_inorder(t, x, n) [L67] COND FALSE !(!t) [L70] EXPR t->left [L70] CALL, EXPR tree_inorder(t->left, a, i) [L67] COND TRUE !t [L68] return i; [L70] RET, EXPR tree_inorder(t->left, a, i) [L70] i = tree_inorder(t->left, a, i) [L71] EXPR i++ [L71] EXPR t->data [L71] a[i++] = t->data [L72] EXPR t->right [L72] CALL, EXPR tree_inorder(t->right, a, i) [L67] COND TRUE !t [L68] return i; [L72] RET, EXPR tree_inorder(t->right, a, i) [L72] i = tree_inorder(t->right, a, i) [L73] return i; [L89] RET tree_inorder(t, x, n) [L90] EXPR x[0] [L90] CALL __VERIFIER_assert(a == x[0]) [L16] COND TRUE !cond [L16] CALL reach_error() [L14] __assert_fail("0", "tree_del_iter_incorrect.c", 14, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 100 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.0s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 415 SDtfs, 653 SDslu, 1383 SDs, 0 SdLazy, 2336 SolverSat, 655 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 170 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=5, 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, 26 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 14.1s InterpolantComputationTime, 390 NumberOfCodeBlocks, 390 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 293 ConstructedInterpolants, 0 QuantifiedInterpolants, 95503 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 60/72 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...