/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_iter.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:54:36,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:54:36,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:54:36,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:54:36,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:54:36,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:54:36,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:54:36,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:54:36,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:54:36,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:54:36,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:54:36,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:54:36,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:54:36,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:54:36,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:54:36,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:54:36,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:54:36,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:54:36,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:54:36,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:54:36,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:54:36,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:54:36,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:54:36,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:54:36,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:54:36,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:54:36,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:54:36,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:54:36,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:54:36,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:54:36,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:54:36,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:54:36,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:54:36,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:54:36,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:54:36,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:54:36,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:54:36,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:54:36,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:54:36,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:54:36,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:54:36,621 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 06:54:36,672 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:54:36,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:54:36,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:54:36,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:54:36,676 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:54:36,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:54:36,677 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:54:36,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:54:36,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:54:36,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:54:36,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:54:36,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:54:36,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:54:36,679 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:54:36,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:54:36,680 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:54:36,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:54:36,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:54:36,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:54:36,681 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:54:36,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:54:36,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:54:36,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:54:36,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:54:36,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:54:36,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:54:36,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:54:36,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:54:36,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:54:36,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:54:37,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:54:37,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:54:37,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:54:37,240 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:54:37,240 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:54:37,242 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter.c [2020-09-25 06:54:37,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79a25ac4c/7b211fc46b594ec2af755f44573580b8/FLAG2d8ececcb [2020-09-25 06:54:37,902 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:54:37,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_iter.c [2020-09-25 06:54:37,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79a25ac4c/7b211fc46b594ec2af755f44573580b8/FLAG2d8ececcb [2020-09-25 06:54:38,218 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79a25ac4c/7b211fc46b594ec2af755f44573580b8 [2020-09-25 06:54:38,234 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:54:38,241 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:54:38,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:54:38,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:54:38,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:54:38,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:54:38" (1/1) ... [2020-09-25 06:54:38,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cc54d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:38, skipping insertion in model container [2020-09-25 06:54:38,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:54:38" (1/1) ... [2020-09-25 06:54:38,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:54:38,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:54:38,535 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 06:54:38,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:54:38,575 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:54:38,603 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 06:54:38,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:54:38,726 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:54:38,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:38 WrapperNode [2020-09-25 06:54:38,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:54:38,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:54:38,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:54:38,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:54:38,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:38" (1/1) ... [2020-09-25 06:54:38,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:38" (1/1) ... [2020-09-25 06:54:38,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:38" (1/1) ... [2020-09-25 06:54:38,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:38" (1/1) ... [2020-09-25 06:54:38,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:38" (1/1) ... [2020-09-25 06:54:38,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:38" (1/1) ... [2020-09-25 06:54:38,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:38" (1/1) ... [2020-09-25 06:54:38,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:54:38,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:54:38,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:54:38,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:54:38,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:54:38,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:54:38,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:54:38,884 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_cycle_if_not [2020-09-25 06:54:38,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 06:54:38,884 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-25 06:54:38,884 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-25 06:54:38,885 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-25 06:54:38,885 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-25 06:54:38,885 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-25 06:54:38,885 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-25 06:54:38,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:54:38,886 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-25 06:54:38,886 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 06:54:38,886 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 06:54:38,887 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 06:54:38,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:54:38,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 06:54:38,888 INFO L130 BoogieDeclarations]: Found specification of procedure assume_cycle_if_not [2020-09-25 06:54:38,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:54:38,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 06:54:38,889 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-25 06:54:38,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 06:54:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 06:54:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 06:54:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-25 06:54:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 06:54:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 06:54:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-25 06:54:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 06:54:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-25 06:54:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-25 06:54:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-25 06:54:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 06:54:38,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-25 06:54:38,894 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:54:38,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:54:38,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:54:39,556 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:54:39,557 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 06:54:39,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:54:39 BoogieIcfgContainer [2020-09-25 06:54:39,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:54:39,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:54:39,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:54:39,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:54:39,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:54:38" (1/3) ... [2020-09-25 06:54:39,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8a574f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:54:39, skipping insertion in model container [2020-09-25 06:54:39,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:38" (2/3) ... [2020-09-25 06:54:39,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8a574f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:54:39, skipping insertion in model container [2020-09-25 06:54:39,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:54:39" (3/3) ... [2020-09-25 06:54:39,577 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_iter.c [2020-09-25 06:54:39,591 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:54:39,604 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:54:39,629 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:54:39,667 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:54:39,667 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:54:39,667 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:54:39,667 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:54:39,668 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:54:39,668 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:54:39,668 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:54:39,668 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:54:39,699 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-09-25 06:54:39,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 06:54:39,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:54:39,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:54:39,717 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:54:39,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:54:39,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1657225032, now seen corresponding path program 1 times [2020-09-25 06:54:39,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:54:39,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323362406] [2020-09-25 06:54:39,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:54:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:40,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:40,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:40,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 06:54:40,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:40,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-09-25 06:54:40,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:40,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:40,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:54:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 06:54:40,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 06:54:40,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 21 [2020-09-25 06:54:40,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:54:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:40,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:40,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:40,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:54:40,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:40,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:54:40,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:40,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:40,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:54:40,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:40,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:54:40,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:40,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:54:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:40,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:40,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:40,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:54:40,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:40,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:54:40,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:40,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:40,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:54:40,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:40,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:54:40,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:54:40,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 06:54:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:40,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:40,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:40,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:54:40,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:40,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:54:40,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:40,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:40,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:54:40,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:40,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:54:40,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:40,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 06:54:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:40,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:40,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:40,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:54:40,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:40,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:54:40,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:40,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:40,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:54:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:40,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:54:40,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 06:54:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:40,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:40,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:40,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:40,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:40,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 06:54:40,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:40,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:40,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:54:40,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:54:40,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:40,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:54:41,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 06:54:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:41,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:41,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:41,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 06:54:41,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:41,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:54:41,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:41,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:41,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:54:41,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 06:54:41,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:54:41,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:41,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 06:54:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:41,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:41,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:41,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:54:41,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:41,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:54:41,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:41,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:41,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:54:41,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 06:54:41,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:54:41,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:41,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:54:41,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323362406] [2020-09-25 06:54:41,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:54:41,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 06:54:41,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771445734] [2020-09-25 06:54:41,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:54:41,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:54:41,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:54:41,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:54:41,147 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 11 states. [2020-09-25 06:54:42,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:54:42,612 INFO L93 Difference]: Finished difference Result 366 states and 427 transitions. [2020-09-25 06:54:42,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:54:42,616 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 06:54:42,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:54:42,651 INFO L225 Difference]: With dead ends: 366 [2020-09-25 06:54:42,652 INFO L226 Difference]: Without dead ends: 210 [2020-09-25 06:54:42,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-09-25 06:54:42,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-09-25 06:54:42,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 196. [2020-09-25 06:54:42,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-25 06:54:42,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 220 transitions. [2020-09-25 06:54:42,801 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 220 transitions. Word has length 60 [2020-09-25 06:54:42,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:54:42,802 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 220 transitions. [2020-09-25 06:54:42,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:54:42,802 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 220 transitions. [2020-09-25 06:54:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 06:54:42,817 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:54:42,817 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:54:42,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:54:42,818 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:54:42,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:54:42,818 INFO L82 PathProgramCache]: Analyzing trace with hash -290171790, now seen corresponding path program 1 times [2020-09-25 06:54:42,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:54:42,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362135629] [2020-09-25 06:54:42,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:54:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:42,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:42,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:43,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:47,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:47,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 06:54:47,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:54:47,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4361 [2020-09-25 06:54:47,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:47,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:47,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:54:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:54:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 06:54:47,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:54:47,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:54:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:47,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:47,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:47,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:54:47,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:47,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:54:47,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:47,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:47,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:54:47,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:47,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:54:47,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:47,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:54:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:47,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:47,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:47,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:54:47,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:47,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:54:47,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:47,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:47,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:54:47,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:47,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:54:47,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:47,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 06:54:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:47,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:47,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:47,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:54:47,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:47,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:54:47,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:47,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:47,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:54:47,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:47,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:54:47,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:47,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 06:54:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:47,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:47,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:47,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 06:54:47,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:47,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 06:54:47,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:47,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:47,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:54:47,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:47,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 06:54:47,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:47,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:54:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:47,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:47,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:47,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:54:47,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:47,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:54:47,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:47,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:47,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:47,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:54:47,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:47,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:54:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:47,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:47,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:47,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:54:47,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:47,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:54:47,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:47,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:47,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:47,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:47,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:54:47,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:47,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 06:54:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:47,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:47,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:47,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:47,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:47,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:54:47,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:47,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:47,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:47,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:47,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:47,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:47,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 06:54:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:47,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:47,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:47,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 06:54:47,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:47,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:54:47,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:47,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:47,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:47,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:47,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:54:47,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:47,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 06:54:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:47,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:47,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:47,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:54:47,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:47,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:54:47,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:47,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:47,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:54:47,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:54:47,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:54:47,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:47,666 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 06:54:47,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362135629] [2020-09-25 06:54:47,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:54:47,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:54:47,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986186357] [2020-09-25 06:54:47,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:54:47,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:54:47,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:54:47,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:54:47,671 INFO L87 Difference]: Start difference. First operand 196 states and 220 transitions. Second operand 11 states. [2020-09-25 06:54:48,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:54:48,860 INFO L93 Difference]: Finished difference Result 337 states and 380 transitions. [2020-09-25 06:54:48,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:54:48,862 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-25 06:54:48,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:54:48,866 INFO L225 Difference]: With dead ends: 337 [2020-09-25 06:54:48,867 INFO L226 Difference]: Without dead ends: 212 [2020-09-25 06:54:48,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:54:48,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-25 06:54:48,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 200. [2020-09-25 06:54:48,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 06:54:48,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 225 transitions. [2020-09-25 06:54:48,913 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 225 transitions. Word has length 80 [2020-09-25 06:54:48,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:54:48,913 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 225 transitions. [2020-09-25 06:54:48,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:54:48,914 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 225 transitions. [2020-09-25 06:54:48,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 06:54:48,915 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:54:48,916 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:54:48,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:54:48,916 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:54:48,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:54:48,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1268161097, now seen corresponding path program 1 times [2020-09-25 06:54:48,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:54:48,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108306124] [2020-09-25 06:54:48,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:54:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:48,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:49,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:49,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:50,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:53,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:53,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 06:54:53,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:54:53,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 06:54:53,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:53,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:53,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:54:53,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:54:53,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 06:54:53,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:54,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:54:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:54,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:54,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:54,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:54:54,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:54,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:54:54,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:54,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:54:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:54,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:54:54,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:54,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:54:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:54,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:54,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:54,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:54:54,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:54,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 06:54:54,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:54,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:54,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:54:54,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:54,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:54,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:54,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 06:54:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:54,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:54,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:54,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:54,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:54:54,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:54:54,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:54:54,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:54,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:54,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:54,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:54,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:54:54,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:54,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 06:54:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:54,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:54,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:54,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:54,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 06:54:54,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:54:54,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 06:54:54,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:54,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:54,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:54,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:54:54,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:54:54,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:54:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:54,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:54,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:54,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:54:54,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:54,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:54:54,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:54,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:54,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:54:54,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:54,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:54:54,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:54,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:54:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:54,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:54,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:54,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:54:54,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:54,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:54:54,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:54,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:54,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:54:54,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:54,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:54:54,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:54,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 06:54:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:54,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:54,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:54,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:54:54,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:54,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:54:54,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:54,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:54,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:54,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:54:54,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:54,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 06:54:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:54,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:54,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:54,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 06:54:54,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:54,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:54:54,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:54,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:54,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:54,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:54,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:54:54,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:54,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 06:54:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:54,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:54,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:54,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 06:54:54,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:54,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 06:54:54,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:54,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:54:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:54:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 06:54:54,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:54,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:54:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:54,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:54,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:54,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:54:54,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:54,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:54:54,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:54,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:54,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:54,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:54,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:54:54,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:54:54,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 06:54:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:54,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:54,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:54:54,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:54:54,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:54:54,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:54:54,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:54:54,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:54:54,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:54:54,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:54:54,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:54:54,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:54:54,608 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 06:54:54,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108306124] [2020-09-25 06:54:54,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:54:54,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 06:54:54,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056404944] [2020-09-25 06:54:54,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 06:54:54,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:54:54,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 06:54:54,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:54:54,613 INFO L87 Difference]: Start difference. First operand 200 states and 225 transitions. Second operand 12 states. [2020-09-25 06:54:56,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:54:56,076 INFO L93 Difference]: Finished difference Result 356 states and 402 transitions. [2020-09-25 06:54:56,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:54:56,077 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-09-25 06:54:56,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:54:56,082 INFO L225 Difference]: With dead ends: 356 [2020-09-25 06:54:56,082 INFO L226 Difference]: Without dead ends: 211 [2020-09-25 06:54:56,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-09-25 06:54:56,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-09-25 06:54:56,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 202. [2020-09-25 06:54:56,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-25 06:54:56,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 228 transitions. [2020-09-25 06:54:56,107 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 228 transitions. Word has length 112 [2020-09-25 06:54:56,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:54:56,108 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 228 transitions. [2020-09-25 06:54:56,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 06:54:56,108 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 228 transitions. [2020-09-25 06:54:56,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 06:54:56,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:54:56,110 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:54:56,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:54:56,110 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:54:56,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:54:56,111 INFO L82 PathProgramCache]: Analyzing trace with hash 897789179, now seen corresponding path program 1 times [2020-09-25 06:54:56,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:54:56,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950919198] [2020-09-25 06:54:56,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:54:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:54:56,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:56,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:54:56,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:01,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:01,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 06:55:01,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:55:01,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 06:55:01,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:01,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:01,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:55:01,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 06:55:01,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 06:55:01,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:55:01,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:55:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:01,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:01,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:01,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:55:01,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:55:01,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:55:01,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:01,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:01,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:55:01,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:55:01,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:55:01,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:55:01,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:55:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:01,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:01,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:01,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:55:01,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:55:01,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 06:55:01,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:01,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:01,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:55:01,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:55:01,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:55:01,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:55:01,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:55:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:01,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:01,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:01,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:55:01,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:55:01,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:55:01,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:01,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:01,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:55:01,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:55:01,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:55:01,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:55:01,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 06:55:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:01,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:01,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:01,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:55:01,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:55:01,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:55:01,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:01,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:01,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:55:01,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:55:01,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:55:01,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:55:01,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 06:55:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:01,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:01,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:01,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:55:01,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:55:01,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:55:01,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:01,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:01,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:55:01,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:55:01,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:55:01,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:55:01,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 06:55:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:01,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:01,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:01,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:01,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 06:55:01,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:55:01,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 06:55:01,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:01,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:01,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:55:01,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:55:01,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:55:01,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:55:01,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:55:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:01,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:01,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:01,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:55:01,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:55:01,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:55:01,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:01,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:01,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:55:01,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:55:01,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:55:01,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:55:01,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:55:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:01,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:01,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:01,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:55:01,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:55:01,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:55:01,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:01,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:55:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:55:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:55:01,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:55:01,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 06:55:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:01,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:01,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:01,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:55:01,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:55:01,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:55:01,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:01,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:01,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:55:01,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:55:01,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:55:01,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:55:01,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 06:55:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:01,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:01,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:01,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 06:55:01,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:55:01,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:55:01,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:01,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:01,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:55:01,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:55:01,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:55:01,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:55:01,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 06:55:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:01,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:01,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:01,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 06:55:01,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:55:01,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 06:55:01,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:01,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:01,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:55:01,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:55:01,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 06:55:01,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:55:01,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:55:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:01,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:01,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:01,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:55:01,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:55:01,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:55:01,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:01,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:55:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:55:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:55:01,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:55:01,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 06:55:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:55:01,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:55:01,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:55:01,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:55:01,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:55:01,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:55:01,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:55:01,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:55:01,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:55:01,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:55:01,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:55:01,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:55:01,754 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 06:55:01,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950919198] [2020-09-25 06:55:01,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:55:01,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:55:01,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387844905] [2020-09-25 06:55:01,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:55:01,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:55:01,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:55:01,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:55:01,757 INFO L87 Difference]: Start difference. First operand 202 states and 228 transitions. Second operand 11 states. [2020-09-25 06:55:03,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:55:03,013 INFO L93 Difference]: Finished difference Result 355 states and 401 transitions. [2020-09-25 06:55:03,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:55:03,014 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 133 [2020-09-25 06:55:03,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:55:03,019 INFO L225 Difference]: With dead ends: 355 [2020-09-25 06:55:03,019 INFO L226 Difference]: Without dead ends: 213 [2020-09-25 06:55:03,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:55:03,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-25 06:55:03,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 204. [2020-09-25 06:55:03,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-09-25 06:55:03,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 231 transitions. [2020-09-25 06:55:03,037 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 231 transitions. Word has length 133 [2020-09-25 06:55:03,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:55:03,038 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 231 transitions. [2020-09-25 06:55:03,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:55:03,038 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 231 transitions. [2020-09-25 06:55:03,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 06:55:03,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:55:03,040 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:55:03,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:55:03,041 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:55:03,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:55:03,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1130815571, now seen corresponding path program 1 times [2020-09-25 06:55:03,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:55:03,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037443257] [2020-09-25 06:55:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:55:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 06:55:03,089 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 06:55:03,090 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 06:55:03,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:55:03,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:55:03 BoogieIcfgContainer [2020-09-25 06:55:03,123 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 06:55:03,126 INFO L168 Benchmark]: Toolchain (without parser) took 24888.58 ms. Allocated memory was 138.9 MB in the beginning and 433.6 MB in the end (delta: 294.6 MB). Free memory was 101.4 MB in the beginning and 145.2 MB in the end (delta: -43.8 MB). Peak memory consumption was 250.9 MB. Max. memory is 7.1 GB. [2020-09-25 06:55:03,127 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 06:55:03,128 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.31 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 180.2 MB in the end (delta: -79.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-09-25 06:55:03,129 INFO L168 Benchmark]: Boogie Preprocessor took 74.24 ms. Allocated memory is still 202.4 MB. Free memory was 180.2 MB in the beginning and 177.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-09-25 06:55:03,130 INFO L168 Benchmark]: RCFGBuilder took 762.14 ms. Allocated memory is still 202.4 MB. Free memory was 177.0 MB in the beginning and 131.8 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. [2020-09-25 06:55:03,131 INFO L168 Benchmark]: TraceAbstraction took 23555.94 ms. Allocated memory was 202.4 MB in the beginning and 433.6 MB in the end (delta: 231.2 MB). Free memory was 131.8 MB in the beginning and 145.2 MB in the end (delta: -13.4 MB). Peak memory consumption was 217.8 MB. Max. memory is 7.1 GB. [2020-09-25 06:55:03,134 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 486.31 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 180.2 MB in the end (delta: -79.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.24 ms. Allocated memory is still 202.4 MB. Free memory was 180.2 MB in the beginning and 177.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 762.14 ms. Allocated memory is still 202.4 MB. Free memory was 177.0 MB in the beginning and 131.8 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23555.94 ms. Allocated memory was 202.4 MB in the beginning and 433.6 MB in the end (delta: 231.2 MB). Free memory was 131.8 MB in the beginning and 145.2 MB in the end (delta: -13.4 MB). Peak memory consumption was 217.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L108] CALL, EXPR nondet_tree() [L23] COND FALSE !(__VERIFIER_nondet_bool()) [L26] struct node *n = (struct node *)malloc(sizeof(struct node)); [L27] n->data = __VERIFIER_nondet_int() [L28] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L28] RET, EXPR nondet_tree() [L28] n->left = nondet_tree() [L29] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L29] RET, EXPR nondet_tree() [L29] n->right = nondet_tree() [L30] return n; [L108] RET, EXPR nondet_tree() [L108] CALL task(nondet_tree()) [L84] CALL, EXPR min(t) [L35] COND FALSE !(!n) [L38] EXPR n->data [L38] int a = n->data; [L39] EXPR n->left [L39] CALL, EXPR min(n->left) [L35] COND TRUE !n [L36] return 2147483647; [L39] RET, EXPR min(n->left) [L39] int b = min(n->left); [L40] EXPR n->right [L40] CALL, EXPR min(n->right) [L35] COND TRUE !n [L36] return 2147483647; [L40] RET, EXPR min(n->right) [L40] int c = min(n->right); [L41] COND TRUE b <= a && b <= c [L41] return b; [L84] RET, EXPR min(t) [L84] int a = min(t); [L85] int b; [L87] CALL, EXPR size(t) [L79] COND FALSE !(!t) [L80] EXPR t->left [L80] CALL, EXPR size(t->left) [L79] COND TRUE !t [L79] return 0; [L80] RET, EXPR size(t->left) [L80] EXPR t->right [L80] CALL, EXPR size(t->right) [L79] COND TRUE !t [L79] return 0; [L80] RET, EXPR size(t->right) [L80] return size(t->left) + size(t->right) + 1; [L87] RET, EXPR size(t) [L87] int n = size(t); [L88] CALL assume_cycle_if_not(n != 0) [L9] COND FALSE !(!cond) [L88] RET assume_cycle_if_not(n != 0) [L89] EXPR, FCALL calloc(n, sizeof(int)) [L89] int *x = calloc(n, sizeof(int)); [L90] CALL tree_inorder(t, x, n) [L68] COND FALSE !(!t) [L71] EXPR t->left [L71] CALL, EXPR tree_inorder(t->left, a, i) [L68] COND TRUE !t [L69] return i; [L71] RET, EXPR tree_inorder(t->left, a, i) [L71] i = tree_inorder(t->left, a, i) [L72] EXPR i++ [L72] EXPR t->data [L72] a[i++] = t->data [L73] EXPR t->right [L73] CALL, EXPR tree_inorder(t->right, a, i) [L68] COND TRUE !t [L69] return i; [L73] RET, EXPR tree_inorder(t->right, a, i) [L73] i = tree_inorder(t->right, a, i) [L74] return i; [L90] RET tree_inorder(t, x, n) [L91] EXPR x[0] [L91] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 206 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.4s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 723 SDtfs, 1726 SDslu, 1733 SDs, 0 SdLazy, 3534 SolverSat, 554 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 17.1s InterpolantComputationTime, 544 NumberOfCodeBlocks, 544 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 381 ConstructedInterpolants, 0 QuantifiedInterpolants, 154555 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 74/88 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...