/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=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_iter.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:03:40,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:03:40,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:03:40,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:03:40,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:03:40,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:03:40,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:03:40,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:03:40,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:03:40,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:03:40,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:03:40,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:03:40,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:03:40,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:03:40,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:03:40,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:03:40,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:03:40,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:03:40,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:03:40,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:03:40,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:03:40,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:03:40,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:03:40,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:03:40,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:03:40,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:03:40,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:03:40,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:03:40,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:03:40,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:03:40,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:03:40,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:03:40,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:03:40,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:03:40,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:03:40,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:03:40,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:03:40,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:03:40,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:03:40,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:03:40,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:03:40,511 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 08:03:40,539 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:03:40,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:03:40,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:03:40,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:03:40,542 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:03:40,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:03:40,542 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:03:40,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:03:40,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:03:40,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:03:40,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:03:40,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:03:40,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:03:40,543 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:03:40,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:03:40,544 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:03:40,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:03:40,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:03:40,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:03:40,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:03:40,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:03:40,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:03:40,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:03:40,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:03:40,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:03:40,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:03:40,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:03:40,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:03:40,547 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:03:40,547 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 08:03:41,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:03:41,087 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:03:41,095 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:03:41,097 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:03:41,099 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:03:41,100 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter.c [2020-09-25 08:03:41,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/229cc0eb9/021ec3dac8744c68858ff56a43c9cfab/FLAGec170d279 [2020-09-25 08:03:41,801 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:03:41,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_iter.c [2020-09-25 08:03:41,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/229cc0eb9/021ec3dac8744c68858ff56a43c9cfab/FLAGec170d279 [2020-09-25 08:03:42,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/229cc0eb9/021ec3dac8744c68858ff56a43c9cfab [2020-09-25 08:03:42,110 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:03:42,117 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:03:42,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:03:42,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:03:42,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:03:42,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:03:42" (1/1) ... [2020-09-25 08:03:42,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4076c4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42, skipping insertion in model container [2020-09-25 08:03:42,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:03:42" (1/1) ... [2020-09-25 08:03:42,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:03:42,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:03:42,400 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 08:03:42,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:03:42,438 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:03:42,475 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 08:03:42,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:03:42,597 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:03:42,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42 WrapperNode [2020-09-25 08:03:42,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:03:42,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:03:42,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:03:42,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:03:42,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42" (1/1) ... [2020-09-25 08:03:42,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42" (1/1) ... [2020-09-25 08:03:42,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42" (1/1) ... [2020-09-25 08:03:42,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42" (1/1) ... [2020-09-25 08:03:42,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42" (1/1) ... [2020-09-25 08:03:42,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42" (1/1) ... [2020-09-25 08:03:42,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42" (1/1) ... [2020-09-25 08:03:42,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:03:42,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:03:42,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:03:42,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:03:42,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42" (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 08:03:42,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:03:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:03:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_cycle_if_not [2020-09-25 08:03:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 08:03:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-25 08:03:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-25 08:03:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-25 08:03:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-25 08:03:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-25 08:03:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-25 08:03:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:03:42,751 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-25 08:03:42,751 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 08:03:42,751 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 08:03:42,751 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 08:03:42,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:03:42,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 08:03:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure assume_cycle_if_not [2020-09-25 08:03:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:03:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 08:03:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-25 08:03:42,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 08:03:42,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:03:42,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 08:03:42,753 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-25 08:03:42,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:03:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 08:03:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-25 08:03:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:03:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-25 08:03:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-25 08:03:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-25 08:03:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 08:03:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-25 08:03:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:03:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:03:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:03:43,383 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:03:43,384 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 08:03:43,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:03:43 BoogieIcfgContainer [2020-09-25 08:03:43,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:03:43,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:03:43,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:03:43,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:03:43,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:03:42" (1/3) ... [2020-09-25 08:03:43,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c982eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:03:43, skipping insertion in model container [2020-09-25 08:03:43,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:42" (2/3) ... [2020-09-25 08:03:43,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c982eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:03:43, skipping insertion in model container [2020-09-25 08:03:43,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:03:43" (3/3) ... [2020-09-25 08:03:43,405 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_iter.c [2020-09-25 08:03:43,418 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:03:43,429 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:03:43,453 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:03:43,488 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:03:43,489 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:03:43,489 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:03:43,489 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:03:43,489 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:03:43,489 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:03:43,490 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:03:43,490 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:03:43,520 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-09-25 08:03:43,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 08:03:43,535 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:43,536 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 08:03:43,537 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:43,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:43,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1657225032, now seen corresponding path program 1 times [2020-09-25 08:03:43,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:43,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104530164] [2020-09-25 08:03:43,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:43,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:44,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:44,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 08:03:44,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:44,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 658 [2020-09-25 08:03:44,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:44,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:44,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:03:44,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 08:03:44,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:03:44,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:03:44,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:44,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:44,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:44,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:44,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:44,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:44,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:44,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:44,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:44,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:44,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:44,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:44,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:03:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:44,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:44,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:44,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:44,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:44,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 08:03:44,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:44,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:44,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:03:44,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 08:03:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:44,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:44,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:44,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:44,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:44,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:44,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:44,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:44,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:44,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:44,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:44,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:03:44,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:03:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:44,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:44,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:44,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:44,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:44,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:03:44,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:44,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:44,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:03:44,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:44,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:44,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:03:44,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 08:03:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:44,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:44,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:44,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:44,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:44,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 08:03:44,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:44,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:03:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:03:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:44,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:03:44,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 08:03:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:44,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:44,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:44,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:03:44,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:44,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:44,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:44,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:44,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:44,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 08:03:44,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:44,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:44,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 08:03:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:44,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:44,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:44,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:03:44,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:44,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:03:44,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:44,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:44,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:44,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 08:03:44,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:44,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:44,915 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 08:03:44,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104530164] [2020-09-25 08:03:44,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:03:44,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 08:03:44,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648690745] [2020-09-25 08:03:44,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:03:44,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:44,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:03:44,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:03:44,950 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 11 states. [2020-09-25 08:03:46,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:46,488 INFO L93 Difference]: Finished difference Result 366 states and 427 transitions. [2020-09-25 08:03:46,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:03:46,493 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 08:03:46,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:46,527 INFO L225 Difference]: With dead ends: 366 [2020-09-25 08:03:46,527 INFO L226 Difference]: Without dead ends: 210 [2020-09-25 08:03:46,543 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 08:03:46,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-09-25 08:03:46,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 196. [2020-09-25 08:03:46,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-25 08:03:46,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 220 transitions. [2020-09-25 08:03:46,632 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 220 transitions. Word has length 60 [2020-09-25 08:03:46,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:46,633 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 220 transitions. [2020-09-25 08:03:46,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:03:46,634 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 220 transitions. [2020-09-25 08:03:46,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 08:03:46,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:46,640 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 08:03:46,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:03:46,640 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:46,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:46,641 INFO L82 PathProgramCache]: Analyzing trace with hash -290171790, now seen corresponding path program 1 times [2020-09-25 08:03:46,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:46,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907560599] [2020-09-25 08:03:46,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:46,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:46,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:46,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:51,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:51,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 08:03:51,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:03:51,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4459 [2020-09-25 08:03:51,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:51,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:51,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:03:51,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 08:03:51,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 08:03:51,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:03:51,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:51,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:51,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:51,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:51,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:51,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:03:51,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:51,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:51,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:51,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:51,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:51,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:51,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:03:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:51,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:51,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:51,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:51,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:51,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:51,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:51,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:51,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:51,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:51,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:51,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:51,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 08:03:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:51,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:51,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:51,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:51,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:51,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:03:51,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:51,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:51,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:51,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:51,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:51,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:51,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:03:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:51,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:51,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:51,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 08:03:51,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:51,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 08:03:51,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:51,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:51,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:03:51,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:51,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 08:03:51,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:51,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:03:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:51,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:51,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:51,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:51,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:51,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:03:51,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:51,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:51,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:03:51,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:51,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:03:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:51,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:51,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:51,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:51,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:51,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:03:51,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:51,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:51,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:51,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:51,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:03:51,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:51,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 08:03:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:51,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:51,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:51,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:51,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:51,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:03:51,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:51,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:51,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:51,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:51,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:51,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:51,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 08:03:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:51,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:51,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:51,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:03:51,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:51,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:51,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:51,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:51,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:51,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:51,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:03:51,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:51,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 08:03:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:51,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:51,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:51,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:03:51,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:51,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 08:03:51,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:51,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:51,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:03:51,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:03:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:03:51,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:51,505 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 08:03:51,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907560599] [2020-09-25 08:03:51,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:51,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 08:03:51,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408076171] [2020-09-25 08:03:51,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:03:51,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:51,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:03:51,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:03:51,510 INFO L87 Difference]: Start difference. First operand 196 states and 220 transitions. Second operand 11 states. [2020-09-25 08:03:52,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:52,766 INFO L93 Difference]: Finished difference Result 337 states and 380 transitions. [2020-09-25 08:03:52,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:03:52,767 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-25 08:03:52,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:52,772 INFO L225 Difference]: With dead ends: 337 [2020-09-25 08:03:52,773 INFO L226 Difference]: Without dead ends: 212 [2020-09-25 08:03:52,775 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 08:03:52,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-25 08:03:52,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 200. [2020-09-25 08:03:52,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 08:03:52,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 225 transitions. [2020-09-25 08:03:52,821 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 225 transitions. Word has length 80 [2020-09-25 08:03:52,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:52,822 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 225 transitions. [2020-09-25 08:03:52,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:03:52,823 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 225 transitions. [2020-09-25 08:03:52,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 08:03:52,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:52,833 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 08:03:52,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:03:52,839 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:52,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:52,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1268161097, now seen corresponding path program 1 times [2020-09-25 08:03:52,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:52,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086988303] [2020-09-25 08:03:52,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:52,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:52,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:52,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:54,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:57,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:57,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 08:03:57,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:03:57,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 08:03:57,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:57,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:03:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:03:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 08:03:57,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:57,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:57,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:57,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:57,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:57,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:57,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:57,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:57,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:57,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:57,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:57,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:57,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:57,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:03:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:58,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:58,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:58,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:58,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:58,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 08:03:58,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:58,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:58,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:03:58,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:58,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:58,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:58,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 08:03:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:58,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:58,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:58,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:58,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:58,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:03:58,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 08:03:58,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:58,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:03:58,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:58,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:03:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:58,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:58,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:58,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:58,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 08:03:58,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:03:58,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 08:03:58,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:58,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:58,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:58,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:58,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 08:03:58,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:03:58,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:03:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:58,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:58,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:58,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:58,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:58,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:03:58,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:58,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:58,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:58,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:03:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:58,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:58,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:58,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:03:58,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:58,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:03:58,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:58,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:58,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:58,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:58,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:58,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:58,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 08:03:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:58,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:58,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:58,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:03:58,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:58,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:03:58,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:58,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:58,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:58,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:58,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:03:58,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:58,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 08:03:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:58,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:58,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:58,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:03:58,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:58,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:58,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:58,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:03:58,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:58,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 08:03:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:58,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:58,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:58,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 08:03:58,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:58,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 08:03:58,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:58,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:58,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:03:58,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:03:58,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 08:03:58,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:58,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:03:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:58,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:58,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:58,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:03:58,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:58,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:03:58,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:58,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:58,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:58,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:58,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:03:58,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:58,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:03:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:58,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:58,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:58,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:03:58,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:58,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:03:58,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:58,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:03:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:58,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:03:58,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:58,587 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 08:03:58,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086988303] [2020-09-25 08:03:58,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:58,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 08:03:58,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674663529] [2020-09-25 08:03:58,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 08:03:58,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:58,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 08:03:58,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:03:58,590 INFO L87 Difference]: Start difference. First operand 200 states and 225 transitions. Second operand 12 states. [2020-09-25 08:04:00,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:04:00,099 INFO L93 Difference]: Finished difference Result 356 states and 402 transitions. [2020-09-25 08:04:00,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 08:04:00,100 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-09-25 08:04:00,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:04:00,105 INFO L225 Difference]: With dead ends: 356 [2020-09-25 08:04:00,106 INFO L226 Difference]: Without dead ends: 211 [2020-09-25 08:04:00,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-09-25 08:04:00,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-09-25 08:04:00,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 202. [2020-09-25 08:04:00,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-25 08:04:00,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 228 transitions. [2020-09-25 08:04:00,129 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 228 transitions. Word has length 112 [2020-09-25 08:04:00,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:04:00,130 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 228 transitions. [2020-09-25 08:04:00,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 08:04:00,130 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 228 transitions. [2020-09-25 08:04:00,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 08:04:00,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:04:00,132 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 08:04:00,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:04:00,133 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:04:00,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:04:00,133 INFO L82 PathProgramCache]: Analyzing trace with hash 897789179, now seen corresponding path program 1 times [2020-09-25 08:04:00,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:04:00,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693740308] [2020-09-25 08:04:00,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:04:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:00,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:00,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:00,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:05,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:05,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 08:04:05,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:04:05,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 08:04:05,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:05,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:05,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:04:05,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 08:04:05,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 08:04:05,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:05,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:04:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:05,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:05,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:05,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:04:05,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:05,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:04:05,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:05,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:05,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:05,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:05,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:05,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:05,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:04:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:05,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:05,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:05,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:04:05,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:05,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 08:04:05,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:05,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:05,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:05,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:05,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:04:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:05,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:05,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:05,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:04:05,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:05,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:04:05,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:05,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:05,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:05,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:05,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:05,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:05,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 08:04:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:05,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:05,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:05,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:04:05,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:05,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:04:05,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:05,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:05,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:05,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:05,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:05,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:05,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 08:04:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:05,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:05,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:05,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:04:05,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:05,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 08:04:05,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:05,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:05,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:04:05,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:05,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:04:05,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:05,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 08:04:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:05,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:05,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:05,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:05,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 08:04:05,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:04:05,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 08:04:05,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:05,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:05,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:04:05,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:05,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 08:04:05,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:05,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:04:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:05,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:05,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:05,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:04:05,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:05,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:04:05,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:05,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:05,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:05,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:05,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:05,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:04:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:05,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:05,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:05,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:04:05,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:05,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:04:05,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:05,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:05,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:05,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:05,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:05,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 08:04:05,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:05,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:05,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:05,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:04:05,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:05,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:04:05,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:05,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:05,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:04:05,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:05,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:04:05,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:05,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 08:04:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:05,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:05,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:05,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:04:05,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:05,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:04:05,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:05,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:05,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:04:05,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:05,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:04:05,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:05,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:04:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:05,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:05,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:05,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 08:04:05,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:05,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 08:04:05,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:05,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:04:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:04:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 08:04:05,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:05,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:04:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:05,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:05,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:05,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:04:05,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:05,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:04:05,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:05,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:05,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:04:05,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:05,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:04:05,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:05,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:04:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:05,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:05,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:05,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:04:05,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:05,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:04:05,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:05,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:05,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:04:05,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:05,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:04:05,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:05,773 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 08:04:05,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693740308] [2020-09-25 08:04:05,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:04:05,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 08:04:05,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950210567] [2020-09-25 08:04:05,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:04:05,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:04:05,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:04:05,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:04:05,778 INFO L87 Difference]: Start difference. First operand 202 states and 228 transitions. Second operand 11 states. [2020-09-25 08:04:06,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:04:06,987 INFO L93 Difference]: Finished difference Result 355 states and 401 transitions. [2020-09-25 08:04:06,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:04:06,988 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 133 [2020-09-25 08:04:06,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:04:06,993 INFO L225 Difference]: With dead ends: 355 [2020-09-25 08:04:06,994 INFO L226 Difference]: Without dead ends: 213 [2020-09-25 08:04:06,995 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 08:04:06,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-25 08:04:07,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 204. [2020-09-25 08:04:07,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-09-25 08:04:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 231 transitions. [2020-09-25 08:04:07,027 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 231 transitions. Word has length 133 [2020-09-25 08:04:07,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:04:07,029 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 231 transitions. [2020-09-25 08:04:07,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:04:07,030 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 231 transitions. [2020-09-25 08:04:07,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 08:04:07,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:04:07,034 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:04:07,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:04:07,034 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:04:07,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:04:07,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1130815571, now seen corresponding path program 1 times [2020-09-25 08:04:07,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:04:07,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529443693] [2020-09-25 08:04:07,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:04:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 08:04:07,083 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 08:04:07,084 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 08:04:07,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:04:07,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:04:07 BoogieIcfgContainer [2020-09-25 08:04:07,118 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:04:07,121 INFO L168 Benchmark]: Toolchain (without parser) took 25008.39 ms. Allocated memory was 138.4 MB in the beginning and 411.0 MB in the end (delta: 272.6 MB). Free memory was 100.3 MB in the beginning and 333.8 MB in the end (delta: -233.5 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB. [2020-09-25 08:04:07,122 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 08:04:07,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 480.75 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 99.3 MB in the beginning and 179.1 MB in the end (delta: -79.8 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-09-25 08:04:07,124 INFO L168 Benchmark]: Boogie Preprocessor took 68.60 ms. Allocated memory is still 201.3 MB. Free memory was 179.1 MB in the beginning and 176.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-09-25 08:04:07,124 INFO L168 Benchmark]: RCFGBuilder took 724.37 ms. Allocated memory is still 201.3 MB. Free memory was 176.1 MB in the beginning and 131.6 MB in the end (delta: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. [2020-09-25 08:04:07,125 INFO L168 Benchmark]: TraceAbstraction took 23722.05 ms. Allocated memory was 201.3 MB in the beginning and 411.0 MB in the end (delta: 209.7 MB). Free memory was 131.0 MB in the beginning and 333.8 MB in the end (delta: -202.8 MB). Peak memory consumption was 6.9 MB. Max. memory is 7.1 GB. [2020-09-25 08:04:07,130 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 480.75 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 99.3 MB in the beginning and 179.1 MB in the end (delta: -79.8 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.60 ms. Allocated memory is still 201.3 MB. Free memory was 179.1 MB in the beginning and 176.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 724.37 ms. Allocated memory is still 201.3 MB. Free memory was 176.1 MB in the beginning and 131.6 MB in the end (delta: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23722.05 ms. Allocated memory was 201.3 MB in the beginning and 411.0 MB in the end (delta: 209.7 MB). Free memory was 131.0 MB in the beginning and 333.8 MB in the end (delta: -202.8 MB). Peak memory consumption was 6.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L108] CALL, EXPR nondet_tree() [L23] COND FALSE !(__VERIFIER_nondet_bool()) [L26] struct node *n = (struct node *)malloc(sizeof(struct node)); [L27] n->data = __VERIFIER_nondet_int() [L28] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L28] RET, EXPR nondet_tree() [L28] n->left = nondet_tree() [L29] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L29] RET, EXPR nondet_tree() [L29] n->right = nondet_tree() [L30] return n; [L108] RET, EXPR nondet_tree() [L108] CALL task(nondet_tree()) [L84] CALL, EXPR min(t) [L35] COND FALSE !(!n) [L38] EXPR n->data [L38] int a = n->data; [L39] EXPR n->left [L39] CALL, EXPR min(n->left) [L35] COND TRUE !n [L36] return 2147483647; [L39] RET, EXPR min(n->left) [L39] int b = min(n->left); [L40] EXPR n->right [L40] CALL, EXPR min(n->right) [L35] COND TRUE !n [L36] return 2147483647; [L40] RET, EXPR min(n->right) [L40] int c = min(n->right); [L41] COND TRUE b <= a && b <= c [L41] return b; [L84] RET, EXPR min(t) [L84] int a = min(t); [L85] int b; [L87] CALL, EXPR size(t) [L79] COND FALSE !(!t) [L80] EXPR t->left [L80] CALL, EXPR size(t->left) [L79] COND TRUE !t [L79] return 0; [L80] RET, EXPR size(t->left) [L80] EXPR t->right [L80] CALL, EXPR size(t->right) [L79] COND TRUE !t [L79] return 0; [L80] RET, EXPR size(t->right) [L80] return size(t->left) + size(t->right) + 1; [L87] RET, EXPR size(t) [L87] int n = size(t); [L88] CALL assume_cycle_if_not(n != 0) [L9] COND FALSE !(!cond) [L88] RET assume_cycle_if_not(n != 0) [L89] EXPR, FCALL calloc(n, sizeof(int)) [L89] int *x = calloc(n, sizeof(int)); [L90] CALL tree_inorder(t, x, n) [L68] COND FALSE !(!t) [L71] EXPR t->left [L71] CALL, EXPR tree_inorder(t->left, a, i) [L68] COND TRUE !t [L69] return i; [L71] RET, EXPR tree_inorder(t->left, a, i) [L71] i = tree_inorder(t->left, a, i) [L72] EXPR i++ [L72] EXPR t->data [L72] a[i++] = t->data [L73] EXPR t->right [L73] CALL, EXPR tree_inorder(t->right, a, i) [L68] COND TRUE !t [L69] return i; [L73] RET, EXPR tree_inorder(t->right, a, i) [L73] i = tree_inorder(t->right, a, i) [L74] return i; [L90] RET tree_inorder(t, x, n) [L91] EXPR x[0] [L91] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 206 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.6s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 723 SDtfs, 1726 SDslu, 1733 SDs, 0 SdLazy, 3534 SolverSat, 554 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.2s InterpolantComputationTime, 544 NumberOfCodeBlocks, 544 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 381 ConstructedInterpolants, 0 QuantifiedInterpolants, 186865 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 74/88 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...