/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:37:03,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:37:03,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:37:03,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:37:03,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:37:03,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:37:03,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:37:03,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:37:03,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:37:03,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:37:03,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:37:03,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:37:03,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:37:03,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:37:03,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:37:03,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:37:03,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:37:03,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:37:03,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:37:03,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:37:03,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:37:03,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:37:03,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:37:03,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:37:03,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:37:03,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:37:03,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:37:03,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:37:03,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:37:03,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:37:03,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:37:03,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:37:03,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:37:03,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:37:03,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:37:03,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:37:03,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:37:03,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:37:03,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:37:03,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:37:03,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:37:03,135 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 04:37:03,191 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:37:03,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:37:03,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:37:03,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:37:03,194 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:37:03,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:37:03,195 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:37:03,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:37:03,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:37:03,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:37:03,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:37:03,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:37:03,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:37:03,198 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:37:03,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:37:03,199 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:37:03,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:37:03,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:37:03,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:37:03,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:37:03,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:37:03,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:37:03,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:37:03,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:37:03,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:37:03,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:37:03,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:37:03,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:37:03,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:37:03,202 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:37:03,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:37:03,728 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:37:03,733 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:37:03,735 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:37:03,736 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:37:03,737 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-09-25 04:37:03,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/271b2f321/303c054331ac4753aa85b18b690b120f/FLAG222f2c6bb [2020-09-25 04:37:04,444 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:37:04,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-09-25 04:37:04,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/271b2f321/303c054331ac4753aa85b18b690b120f/FLAG222f2c6bb [2020-09-25 04:37:04,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/271b2f321/303c054331ac4753aa85b18b690b120f [2020-09-25 04:37:04,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:37:04,776 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:37:04,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:37:04,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:37:04,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:37:04,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:37:04" (1/1) ... [2020-09-25 04:37:04,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d5d5e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:04, skipping insertion in model container [2020-09-25 04:37:04,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:37:04" (1/1) ... [2020-09-25 04:37:04,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:37:04,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:37:05,070 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 04:37:05,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:37:05,108 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:37:05,225 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 04:37:05,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:37:05,260 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:37:05,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:05 WrapperNode [2020-09-25 04:37:05,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:37:05,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:37:05,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:37:05,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:37:05,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:05" (1/1) ... [2020-09-25 04:37:05,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:05" (1/1) ... [2020-09-25 04:37:05,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:05" (1/1) ... [2020-09-25 04:37:05,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:05" (1/1) ... [2020-09-25 04:37:05,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:05" (1/1) ... [2020-09-25 04:37:05,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:05" (1/1) ... [2020-09-25 04:37:05,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:05" (1/1) ... [2020-09-25 04:37:05,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:37:05,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:37:05,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:37:05,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:37:05,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:05" (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 04:37:05,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:37:05,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:37:05,408 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 04:37:05,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 04:37:05,408 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-25 04:37:05,408 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-25 04:37:05,409 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-25 04:37:05,409 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-25 04:37:05,409 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-25 04:37:05,409 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-25 04:37:05,410 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:37:05,410 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-25 04:37:05,410 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 04:37:05,410 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 04:37:05,410 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 04:37:05,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:37:05,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 04:37:05,411 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 04:37:05,412 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 04:37:05,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:37:05,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 04:37:05,412 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-25 04:37:05,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 04:37:05,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 04:37:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 04:37:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-25 04:37:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 04:37:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-25 04:37:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 04:37:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:37:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-25 04:37:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-25 04:37:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-25 04:37:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 04:37:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-25 04:37:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:37:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:37:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:37:06,048 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:37:06,051 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 04:37:06,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:37:06 BoogieIcfgContainer [2020-09-25 04:37:06,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:37:06,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:37:06,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:37:06,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:37:06,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:37:04" (1/3) ... [2020-09-25 04:37:06,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ce0d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:37:06, skipping insertion in model container [2020-09-25 04:37:06,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:37:05" (2/3) ... [2020-09-25 04:37:06,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ce0d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:37:06, skipping insertion in model container [2020-09-25 04:37:06,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:37:06" (3/3) ... [2020-09-25 04:37:06,078 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2020-09-25 04:37:06,091 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:37:06,104 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:37:06,128 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:37:06,172 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:37:06,173 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:37:06,173 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:37:06,173 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:37:06,173 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:37:06,174 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:37:06,174 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:37:06,174 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:37:06,204 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-09-25 04:37:06,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 04:37:06,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:37:06,219 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 04:37:06,219 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:37:06,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:37:06,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1732590877, now seen corresponding path program 1 times [2020-09-25 04:37:06,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:37:06,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725074232] [2020-09-25 04:37:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:37:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:06,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:07,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:07,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 04:37:07,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:07,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 693 [2020-09-25 04:37:07,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:07,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:07,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:37:07,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 04:37:07,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 04:37:07,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:37:07,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:37:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:07,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:07,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:07,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:07,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:07,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:37:07,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:07,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:07,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:07,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:07,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 04:37:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:07,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:07,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:07,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:07,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:07,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:37:07,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:07,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:07,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:07,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:07,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:07,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:07,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 04:37:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:07,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:07,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:07,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:07,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:07,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:37:07,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:07,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:07,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:07,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:07,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:07,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:07,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 04:37:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:07,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:07,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:07,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:07,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:07,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:37:07,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:07,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:07,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:37:07,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:07,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:37:07,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:07,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 04:37:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:07,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:07,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:07,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 04:37:07,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:07,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:37:07,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:07,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:07,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:37:07,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:37:07,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:37:07,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:07,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 04:37:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:07,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:07,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:07,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 04:37:07,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:07,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:37:07,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:07,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:07,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:07,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 04:37:07,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:07,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:07,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 04:37:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:07,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:07,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:07,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:37:07,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:07,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:37:07,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:07,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:07,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:37:07,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:07,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:07,511 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 04:37:07,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725074232] [2020-09-25 04:37:07,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:37:07,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 04:37:07,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748781496] [2020-09-25 04:37:07,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 04:37:07,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:37:07,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 04:37:07,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:37:07,545 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 11 states. [2020-09-25 04:37:08,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:37:08,966 INFO L93 Difference]: Finished difference Result 357 states and 415 transitions. [2020-09-25 04:37:08,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:37:08,969 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 04:37:08,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:37:08,986 INFO L225 Difference]: With dead ends: 357 [2020-09-25 04:37:08,986 INFO L226 Difference]: Without dead ends: 205 [2020-09-25 04:37:08,993 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 04:37:09,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-09-25 04:37:09,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 191. [2020-09-25 04:37:09,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 04:37:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 214 transitions. [2020-09-25 04:37:09,071 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 214 transitions. Word has length 60 [2020-09-25 04:37:09,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:37:09,072 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 214 transitions. [2020-09-25 04:37:09,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 04:37:09,072 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 214 transitions. [2020-09-25 04:37:09,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 04:37:09,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:37:09,078 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 04:37:09,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:37:09,079 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:37:09,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:37:09,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1923885975, now seen corresponding path program 1 times [2020-09-25 04:37:09,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:37:09,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714571638] [2020-09-25 04:37:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:37:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:09,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:09,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:09,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:13,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:13,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 04:37:13,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:37:13,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4668 [2020-09-25 04:37:13,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:13,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:13,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:37:13,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:37:13,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 04:37:13,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:37:13,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:37:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:13,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:13,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:13,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:13,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:13,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:37:13,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:13,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:13,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:13,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:13,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 04:37:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:13,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:13,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:13,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:13,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:13,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:37:13,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:13,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:13,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:13,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:13,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:13,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:13,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 04:37:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:13,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:13,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:13,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:13,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:13,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:37:13,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:13,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:13,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:13,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:13,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:13,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:13,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 04:37:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:13,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:14,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:14,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 04:37:14,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:14,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 04:37:14,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:14,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:37:14,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:14,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:37:14,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:14,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:37:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:14,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:14,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:14,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:14,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:14,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:37:14,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:14,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:14,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:37:14,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:14,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:37:14,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:37:14,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:37:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:14,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:14,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:14,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:14,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:14,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:37:14,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:14,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:14,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:37:14,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:14,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:37:14,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:14,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 04:37:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:14,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:14,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:14,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 04:37:14,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:14,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 04:37:14,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:14,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:14,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:37:14,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:14,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:37:14,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:37:14,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 04:37:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:14,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:14,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:14,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 04:37:14,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:14,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:37:14,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:14,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:37:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:14,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:37:14,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:14,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 04:37:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:14,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:14,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:14,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:37:14,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:14,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 04:37:14,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:14,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:14,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:37:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:37:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:37:14,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:14,394 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 04:37:14,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714571638] [2020-09-25 04:37:14,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:37:14,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 04:37:14,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160328898] [2020-09-25 04:37:14,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 04:37:14,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:37:14,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 04:37:14,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:37:14,404 INFO L87 Difference]: Start difference. First operand 191 states and 214 transitions. Second operand 11 states. [2020-09-25 04:37:15,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:37:15,587 INFO L93 Difference]: Finished difference Result 332 states and 374 transitions. [2020-09-25 04:37:15,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 04:37:15,588 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-25 04:37:15,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:37:15,593 INFO L225 Difference]: With dead ends: 332 [2020-09-25 04:37:15,594 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 04:37:15,596 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 04:37:15,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 04:37:15,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 195. [2020-09-25 04:37:15,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-09-25 04:37:15,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 219 transitions. [2020-09-25 04:37:15,628 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 219 transitions. Word has length 80 [2020-09-25 04:37:15,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:37:15,628 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 219 transitions. [2020-09-25 04:37:15,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 04:37:15,629 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 219 transitions. [2020-09-25 04:37:15,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 04:37:15,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:37:15,635 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 04:37:15,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:37:15,635 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:37:15,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:37:15,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1290663058, now seen corresponding path program 1 times [2020-09-25 04:37:15,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:37:15,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035066891] [2020-09-25 04:37:15,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:37:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:15,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:15,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:15,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:16,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:20,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:20,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 04:37:20,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:37:20,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 04:37:20,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:20,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:37:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:37:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:37:20,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:20,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:37:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:20,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:20,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:20,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:20,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:20,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:37:20,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:20,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:20,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:20,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:20,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:20,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:20,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 04:37:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:20,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:20,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:20,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:20,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:20,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 04:37:20,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:20,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:20,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:37:20,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:20,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:37:20,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:20,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 04:37:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:20,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:20,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:20,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:20,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:20,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:37:20,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:37:20,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:20,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:20,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:37:20,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:20,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:37:20,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:20,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 04:37:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:20,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:20,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:20,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:20,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 04:37:20,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:37:20,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 04:37:20,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:20,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:20,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:37:20,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:20,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:37:20,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:37:20,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:37:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:20,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:20,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:20,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:20,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:20,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:37:20,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:20,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:20,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:20,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:20,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:20,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:20,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:37:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:20,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:20,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:20,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:20,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:20,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:37:20,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:20,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:20,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:20,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:20,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:20,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:20,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 04:37:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:20,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:20,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:20,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 04:37:20,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:20,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:37:20,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:20,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:20,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:37:20,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:20,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:37:20,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:21,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 04:37:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:21,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:21,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:21,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 04:37:21,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:21,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:37:21,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:21,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:21,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:37:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:37:21,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:37:21,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 04:37:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:21,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:21,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:21,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 04:37:21,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:21,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 04:37:21,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:21,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:21,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:37:21,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:37:21,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 04:37:21,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:21,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:37:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:21,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:21,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:21,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:37:21,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:21,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:37:21,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:21,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:21,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:37:21,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:37:21,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:21,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 04:37:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:21,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:21,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:21,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:37:21,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:21,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:37:21,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:21,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:37:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:21,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:37:21,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:21,279 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 04:37:21,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035066891] [2020-09-25 04:37:21,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:37:21,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 04:37:21,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491954799] [2020-09-25 04:37:21,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 04:37:21,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:37:21,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 04:37:21,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:37:21,284 INFO L87 Difference]: Start difference. First operand 195 states and 219 transitions. Second operand 12 states. [2020-09-25 04:37:22,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:37:22,654 INFO L93 Difference]: Finished difference Result 351 states and 396 transitions. [2020-09-25 04:37:22,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 04:37:22,655 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-09-25 04:37:22,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:37:22,660 INFO L225 Difference]: With dead ends: 351 [2020-09-25 04:37:22,661 INFO L226 Difference]: Without dead ends: 206 [2020-09-25 04:37:22,665 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 04:37:22,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-25 04:37:22,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 197. [2020-09-25 04:37:22,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-09-25 04:37:22,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 222 transitions. [2020-09-25 04:37:22,715 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 222 transitions. Word has length 112 [2020-09-25 04:37:22,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:37:22,716 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 222 transitions. [2020-09-25 04:37:22,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 04:37:22,716 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 222 transitions. [2020-09-25 04:37:22,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 04:37:22,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:37:22,730 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 04:37:22,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:37:22,730 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:37:22,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:37:22,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1069363160, now seen corresponding path program 1 times [2020-09-25 04:37:22,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:37:22,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170127833] [2020-09-25 04:37:22,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:37:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:22,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:22,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:22,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:27,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:27,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 04:37:27,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:37:27,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 04:37:27,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:27,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:27,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:37:27,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 04:37:27,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 04:37:27,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:37:27,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:37:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:27,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:27,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:27,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:27,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:27,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:37:27,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:27,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:27,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:27,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:27,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:27,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:27,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 04:37:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:27,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:27,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:27,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:37:27,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:27,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:37:27,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:27,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:27,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:27,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:27,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 04:37:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:27,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:27,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:27,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:27,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:27,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:37:27,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:27,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:27,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:27,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:27,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:27,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:27,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 04:37:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:27,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:27,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:27,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:27,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:27,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:37:27,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:27,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:27,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:27,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:27,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:27,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:27,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 04:37:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:27,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:27,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:27,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:27,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:27,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:37:27,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:27,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:37:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:27,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:37:27,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:28,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:37:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:28,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:28,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:28,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:28,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 04:37:28,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:37:28,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 04:37:28,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:28,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:28,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:37:28,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:28,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:37:28,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:28,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:37:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:28,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:28,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:28,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:28,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:28,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:37:28,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:28,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:28,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:28,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:28,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:28,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:28,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:37:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:28,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:28,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:28,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:28,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:28,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:37:28,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:28,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:28,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:28,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:28,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:28,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:28,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 04:37:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:28,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:28,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:28,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 04:37:28,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:28,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:37:28,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:28,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:28,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:37:28,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:28,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:37:28,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:28,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 04:37:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:28,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:28,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:28,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 04:37:28,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:28,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:37:28,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:28,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:28,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:37:28,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:28,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:37:28,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:28,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 04:37:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:28,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:28,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:28,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 04:37:28,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:28,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 04:37:28,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:28,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:28,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:37:28,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:37:28,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 04:37:28,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:28,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:37:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:28,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:28,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:28,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:37:28,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:28,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:37:28,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:28,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:28,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:37:28,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:28,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:37:28,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:28,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 04:37:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:28,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:28,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:28,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:37:28,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:28,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:37:28,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:28,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:28,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:37:28,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:28,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:37:28,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:28,461 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 04:37:28,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170127833] [2020-09-25 04:37:28,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:37:28,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 04:37:28,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489193331] [2020-09-25 04:37:28,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 04:37:28,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:37:28,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 04:37:28,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:37:28,466 INFO L87 Difference]: Start difference. First operand 197 states and 222 transitions. Second operand 11 states. [2020-09-25 04:37:29,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:37:29,703 INFO L93 Difference]: Finished difference Result 350 states and 395 transitions. [2020-09-25 04:37:29,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 04:37:29,704 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 133 [2020-09-25 04:37:29,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:37:29,707 INFO L225 Difference]: With dead ends: 350 [2020-09-25 04:37:29,707 INFO L226 Difference]: Without dead ends: 208 [2020-09-25 04:37:29,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 04:37:29,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-09-25 04:37:29,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 199. [2020-09-25 04:37:29,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-09-25 04:37:29,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 225 transitions. [2020-09-25 04:37:29,751 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 225 transitions. Word has length 133 [2020-09-25 04:37:29,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:37:29,751 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 225 transitions. [2020-09-25 04:37:29,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 04:37:29,751 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 225 transitions. [2020-09-25 04:37:29,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 04:37:29,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:37:29,755 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:37:29,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:37:29,756 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:37:29,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:37:29,760 INFO L82 PathProgramCache]: Analyzing trace with hash 757817759, now seen corresponding path program 1 times [2020-09-25 04:37:29,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:37:29,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907990175] [2020-09-25 04:37:29,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:37:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:29,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:29,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:31,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:31,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 04:37:31,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:37:31,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1448 [2020-09-25 04:37:31,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:31,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:37:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 04:37:31,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:37:31,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:31,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:37:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:31,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:31,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:31,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:31,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:31,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:37:31,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:31,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:31,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:31,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:31,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:31,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:37:31,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 04:37:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:31,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:31,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:31,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:37:31,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:31,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:37:31,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:31,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:31,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:31,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:31,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:31,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:31,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 04:37:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:31,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:31,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:31,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:31,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:31,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:37:31,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:31,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:31,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:31,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:31,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:31,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:31,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 04:37:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:31,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:31,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:31,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:31,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:31,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:37:31,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:31,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:31,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:31,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:31,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:31,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:31,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 04:37:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:31,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:31,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:31,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:31,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 04:37:31,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:37:31,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 04:37:31,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:31,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:31,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:37:31,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:37:31,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:37:31,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:31,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:37:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:31,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:31,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:31,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:31,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:31,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:37:31,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:31,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:31,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:37:31,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:31,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:37:31,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:31,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-25 04:37:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:31,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:31,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:31,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:31,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:31,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:37:31,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:31,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:37:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:37:31,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:31,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 04:37:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:31,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:31,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:31,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 04:37:31,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:31,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:37:31,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:31,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:31,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:31,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 04:37:31,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:31,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:31,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:37:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:31,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:31,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:31,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:31,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:31,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:37:31,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:31,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:31,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:31,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:31,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:31,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:31,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:37:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:31,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:31,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:31,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:37:31,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:31,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:37:31,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:31,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:31,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:31,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:31,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:31,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:31,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-25 04:37:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:31,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:31,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:31,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 04:37:31,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:31,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:37:31,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:31,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:37:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:31,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:31,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 04:37:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:31,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:31,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:31,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 04:37:31,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:31,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:37:31,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:31,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:31,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:31,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 04:37:31,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:31,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:31,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 04:37:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:31,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:31,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:31,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 04:37:31,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:31,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 04:37:31,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:31,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:31,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 04:37:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:31,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:31,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:37:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:31,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:31,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:31,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:37:31,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:31,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:37:31,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:31,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:31,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:31,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 04:37:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:37:31,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:37:31,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:37:31,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:37:31,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:37:31,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:37:31,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:37:31,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:37:31,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:37:31,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:37:31,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:37:31,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:37:31,859 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-25 04:37:31,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907990175] [2020-09-25 04:37:31,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:37:31,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 04:37:31,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450638106] [2020-09-25 04:37:31,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 04:37:31,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:37:31,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 04:37:31,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:37:31,864 INFO L87 Difference]: Start difference. First operand 199 states and 225 transitions. Second operand 12 states. [2020-09-25 04:37:33,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:37:33,199 INFO L93 Difference]: Finished difference Result 375 states and 425 transitions. [2020-09-25 04:37:33,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 04:37:33,205 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 156 [2020-09-25 04:37:33,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:37:33,208 INFO L225 Difference]: With dead ends: 375 [2020-09-25 04:37:33,208 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 04:37:33,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-09-25 04:37:33,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 04:37:33,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 198. [2020-09-25 04:37:33,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-25 04:37:33,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 223 transitions. [2020-09-25 04:37:33,224 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 223 transitions. Word has length 156 [2020-09-25 04:37:33,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:37:33,225 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 223 transitions. [2020-09-25 04:37:33,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 04:37:33,225 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 223 transitions. [2020-09-25 04:37:33,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 04:37:33,228 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:37:33,228 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:37:33,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:37:33,228 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:37:33,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:37:33,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1025407455, now seen corresponding path program 1 times [2020-09-25 04:37:33,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:37:33,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024790130] [2020-09-25 04:37:33,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:37:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 04:37:33,277 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 04:37:33,277 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 04:37:33,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:37:33,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:37:33 BoogieIcfgContainer [2020-09-25 04:37:33,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:37:33,315 INFO L168 Benchmark]: Toolchain (without parser) took 28541.01 ms. Allocated memory was 140.5 MB in the beginning and 462.9 MB in the end (delta: 322.4 MB). Free memory was 101.8 MB in the beginning and 216.7 MB in the end (delta: -114.9 MB). Peak memory consumption was 207.6 MB. Max. memory is 7.1 GB. [2020-09-25 04:37:33,316 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 04:37:33,317 INFO L168 Benchmark]: CACSL2BoogieTranslator took 484.73 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.1 MB in the beginning and 179.0 MB in the end (delta: -77.9 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-25 04:37:33,318 INFO L168 Benchmark]: Boogie Preprocessor took 65.20 ms. Allocated memory is still 202.9 MB. Free memory was 179.0 MB in the beginning and 176.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-25 04:37:33,319 INFO L168 Benchmark]: RCFGBuilder took 737.54 ms. Allocated memory is still 202.9 MB. Free memory was 176.5 MB in the beginning and 133.2 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2020-09-25 04:37:33,320 INFO L168 Benchmark]: TraceAbstraction took 27243.73 ms. Allocated memory was 202.9 MB in the beginning and 462.9 MB in the end (delta: 260.0 MB). Free memory was 133.2 MB in the beginning and 216.7 MB in the end (delta: -83.5 MB). Peak memory consumption was 176.5 MB. Max. memory is 7.1 GB. [2020-09-25 04:37:33,324 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 484.73 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.1 MB in the beginning and 179.0 MB in the end (delta: -77.9 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.20 ms. Allocated memory is still 202.9 MB. Free memory was 179.0 MB in the beginning and 176.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 737.54 ms. Allocated memory is still 202.9 MB. Free memory was 176.5 MB in the beginning and 133.2 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27243.73 ms. Allocated memory was 202.9 MB in the beginning and 462.9 MB in the end (delta: 260.0 MB). Free memory was 133.2 MB in the beginning and 216.7 MB in the end (delta: -83.5 MB). Peak memory consumption was 176.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L103] CALL, EXPR nondet_tree() [L23] COND FALSE !(__VERIFIER_nondet_bool()) [L26] struct node *n = (struct node *)malloc(sizeof(struct node)); [L27] n->data = __VERIFIER_nondet_int() [L28] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L28] RET, EXPR nondet_tree() [L28] n->left = nondet_tree() [L29] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L29] RET, EXPR nondet_tree() [L29] n->right = nondet_tree() [L30] return n; [L103] RET, EXPR nondet_tree() [L103] CALL task(nondet_tree()) [L81] CALL, EXPR min(t) [L35] COND FALSE !(!n) [L38] EXPR n->left [L38] CALL, EXPR min(n->left) [L35] COND TRUE !n [L36] return 2147483647; [L38] RET, EXPR min(n->left) [L38] int a = min(n->left); [L39] EXPR n->right [L39] CALL, EXPR min(n->right) [L35] COND TRUE !n [L36] return 2147483647; [L39] RET, EXPR min(n->right) [L39] int b = min(n->right); [L40] COND TRUE a <= b [L40] return a; [L81] RET, EXPR min(t) [L81] int a = min(t); [L82] int b; [L84] CALL, EXPR size(t) [L76] COND FALSE !(!t) [L77] EXPR t->left [L77] CALL, EXPR size(t->left) [L76] COND TRUE !t [L76] return 0; [L77] RET, EXPR size(t->left) [L77] EXPR t->right [L77] CALL, EXPR size(t->right) [L76] COND TRUE !t [L76] return 0; [L77] RET, EXPR size(t->right) [L77] return size(t->left) + size(t->right) + 1; [L84] RET, EXPR size(t) [L84] int n = size(t); [L85] CALL assume_abort_if_not(n != 0) [L10] COND FALSE !(!cond) [L85] RET assume_abort_if_not(n != 0) [L86] EXPR, FCALL calloc(n, sizeof(int)) [L86] int *x = calloc(n, sizeof(int)); [L87] CALL tree_inorder(t, x, n) [L65] COND FALSE !(!t) [L68] EXPR t->left [L68] CALL, EXPR tree_inorder(t->left, a, i) [L65] COND TRUE !t [L66] return i; [L68] RET, EXPR tree_inorder(t->left, a, i) [L68] i = tree_inorder(t->left, a, i) [L69] EXPR i++ [L69] EXPR t->data [L69] a[i++] = t->data [L70] EXPR t->right [L70] CALL, EXPR tree_inorder(t->right, a, i) [L65] COND TRUE !t [L66] return i; [L70] RET, EXPR tree_inorder(t->right, a, i) [L70] i = tree_inorder(t->right, a, i) [L71] return i; [L87] RET tree_inorder(t, x, n) [L88] EXPR x[0] [L88] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 199 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.1s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 871 SDtfs, 1760 SDslu, 2299 SDs, 0 SdLazy, 4407 SolverSat, 585 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 192 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 53 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 19.6s InterpolantComputationTime, 697 NumberOfCodeBlocks, 697 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 536 ConstructedInterpolants, 0 QuantifiedInterpolants, 203099 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 128/144 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...