/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:05:51,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:05:51,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:05:51,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:05:51,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:05:51,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:05:51,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:05:51,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:05:51,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:05:51,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:05:51,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:05:51,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:05:51,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:05:51,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:05:51,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:05:51,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:05:51,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:05:51,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:05:51,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:05:51,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:05:51,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:05:51,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:05:51,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:05:51,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:05:51,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:05:51,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:05:51,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:05:51,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:05:51,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:05:51,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:05:51,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:05:51,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:05:51,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:05:51,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:05:51,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:05:51,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:05:51,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:05:51,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:05:51,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:05:51,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:05:51,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:05:51,419 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 [2020-09-24 17:05:51,480 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:05:51,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:05:51,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:05:51,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:05:51,482 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:05:51,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:05:51,483 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:05:51,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:05:51,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:05:51,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:05:51,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:05:51,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:05:51,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:05:51,485 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:05:51,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:05:51,485 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:05:51,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:05:51,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:05:51,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:05:51,486 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:05:51,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:05:51,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:05:51,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:05:51,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:05:51,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:05:51,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:05:51,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:05:51,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:05:51,489 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:05:51,489 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;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;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;log-additional-information=true; [2020-09-24 17:05:51,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:05:51,989 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:05:51,994 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:05:51,996 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:05:51,996 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:05:51,998 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_rec.c [2020-09-24 17:05:52,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e76012f35/f428c53aa5d74fc8ac8cbc3fb9365003/FLAG649f4fc7c [2020-09-24 17:05:52,707 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:05:52,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_rec.c [2020-09-24 17:05:52,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e76012f35/f428c53aa5d74fc8ac8cbc3fb9365003/FLAG649f4fc7c [2020-09-24 17:05:52,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e76012f35/f428c53aa5d74fc8ac8cbc3fb9365003 [2020-09-24 17:05:53,012 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:05:53,020 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:05:53,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:05:53,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:05:53,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:05:53,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:05:53" (1/1) ... [2020-09-24 17:05:53,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc3fb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:53, skipping insertion in model container [2020-09-24 17:05:53,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:05:53" (1/1) ... [2020-09-24 17:05:53,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:05:53,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:05:53,317 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 17:05:53,320 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 17:05:53,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:05:53,358 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:05:53,468 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 17:05:53,470 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 17:05:53,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:05:53,514 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:05:53,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:53 WrapperNode [2020-09-24 17:05:53,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:05:53,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:05:53,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:05:53,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:05:53,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:53" (1/1) ... [2020-09-24 17:05:53,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:53" (1/1) ... [2020-09-24 17:05:53,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:53" (1/1) ... [2020-09-24 17:05:53,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:53" (1/1) ... [2020-09-24 17:05:53,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:53" (1/1) ... [2020-09-24 17:05:53,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:53" (1/1) ... [2020-09-24 17:05:53,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:53" (1/1) ... [2020-09-24 17:05:53,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:05:53,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:05:53,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:05:53,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:05:53,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:53" (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 [2020-09-24 17:05:53,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:05:53,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:05:53,670 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_cycle_if_not [2020-09-24 17:05:53,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 17:05:53,670 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-24 17:05:53,671 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-24 17:05:53,672 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-24 17:05:53,672 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-24 17:05:53,672 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-24 17:05:53,672 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-24 17:05:53,672 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:05:53,674 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-24 17:05:53,674 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 17:05:53,674 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 17:05:53,675 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 17:05:53,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:05:53,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 17:05:53,675 INFO L130 BoogieDeclarations]: Found specification of procedure assume_cycle_if_not [2020-09-24 17:05:53,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:05:53,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 17:05:53,677 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-24 17:05:53,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 17:05:53,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:05:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 17:05:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-24 17:05:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:05:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 17:05:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-24 17:05:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:05:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-24 17:05:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-24 17:05:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-24 17:05:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 17:05:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-24 17:05:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:05:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:05:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:05:54,281 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:05:54,282 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 17:05:54,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:05:54 BoogieIcfgContainer [2020-09-24 17:05:54,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:05:54,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:05:54,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:05:54,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:05:54,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:05:53" (1/3) ... [2020-09-24 17:05:54,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756413f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:05:54, skipping insertion in model container [2020-09-24 17:05:54,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:53" (2/3) ... [2020-09-24 17:05:54,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756413f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:05:54, skipping insertion in model container [2020-09-24 17:05:54,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:05:54" (3/3) ... [2020-09-24 17:05:54,316 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_rec.c [2020-09-24 17:05:54,328 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:05:54,343 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:05:54,365 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:05:54,403 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:05:54,403 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:05:54,403 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:05:54,403 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:05:54,404 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:05:54,404 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:05:54,404 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:05:54,404 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:05:54,435 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-09-24 17:05:54,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 17:05:54,449 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:54,451 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] [2020-09-24 17:05:54,451 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:54,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:54,459 INFO L82 PathProgramCache]: Analyzing trace with hash -2147081424, now seen corresponding path program 1 times [2020-09-24 17:05:54,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:54,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11512492] [2020-09-24 17:05:54,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:54,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:55,349 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:55,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 17:05:55,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:55,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 664 [2020-09-24 17:05:55,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:55,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:05:55,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 17:05:55,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:05:55,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:05:55,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:55,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:55,510 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:55,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:55,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:55,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 17:05:55,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:55,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:55,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:55,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:55,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:55,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 17:05:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:55,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:55,561 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:55,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:55,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:55,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 17:05:55,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:55,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:55,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:55,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:55,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:55,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 17:05:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:55,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:55,583 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:55,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:55,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:55,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:05:55,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:55,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:55,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:55,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:55,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:55,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 17:05:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:55,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:55,627 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:55,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:55,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:55,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 17:05:55,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:55,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:55,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 17:05:55,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 17:05:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:55,686 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:55,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:05:55,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:55,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 17:05:55,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:55,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:05:55,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:05:55,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:55,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 17:05:55,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 17:05:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:55,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:55,762 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:55,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:05:55,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:55,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 17:05:55,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:55,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:55,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 17:05:55,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:55,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:55,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 17:05:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:55,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:55,803 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:55,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:05:55,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:55,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:05:55,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:55,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:55,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 17:05:55,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:55,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:55,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:05:55,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11512492] [2020-09-24 17:05:55,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:05:55,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 17:05:55,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442268522] [2020-09-24 17:05:55,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 17:05:55,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:55,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 17:05:55,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:05:55,862 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 11 states. [2020-09-24 17:05:57,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:57,188 INFO L93 Difference]: Finished difference Result 333 states and 391 transitions. [2020-09-24 17:05:57,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 17:05:57,192 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-24 17:05:57,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:57,223 INFO L225 Difference]: With dead ends: 333 [2020-09-24 17:05:57,224 INFO L226 Difference]: Without dead ends: 193 [2020-09-24 17:05:57,235 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 [2020-09-24 17:05:57,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-24 17:05:57,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 180. [2020-09-24 17:05:57,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-09-24 17:05:57,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 204 transitions. [2020-09-24 17:05:57,352 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 204 transitions. Word has length 60 [2020-09-24 17:05:57,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:57,353 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 204 transitions. [2020-09-24 17:05:57,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 17:05:57,354 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 204 transitions. [2020-09-24 17:05:57,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 17:05:57,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:57,359 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] [2020-09-24 17:05:57,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:05:57,360 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:57,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:57,360 INFO L82 PathProgramCache]: Analyzing trace with hash 394479658, now seen corresponding path program 1 times [2020-09-24 17:05:57,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:57,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000583856] [2020-09-24 17:05:57,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:57,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:57,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:57,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:01,742 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:01,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 17:06:01,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:06:01,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4355 [2020-09-24 17:06:01,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:01,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:06:01,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 17:06:01,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 17:06:01,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:01,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:01,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:01,840 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:01,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:06:01,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:01,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:06:01,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:01,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:01,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:01,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:01,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:01,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 17:06:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:01,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:01,873 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:01,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:06:01,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:01,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:06:01,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:01,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:01,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:01,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:01,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:01,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 17:06:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:01,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:01,902 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:01,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:06:01,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:01,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 17:06:01,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:06:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:06:01,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:01,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 17:06:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:01,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:02,013 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:02,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 17:06:02,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:02,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 17:06:02,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:02,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:06:02,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:06:02,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:06:02,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:02,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:06:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:02,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:02,131 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:02,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:06:02,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:02,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:06:02,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:02,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:02,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:02,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:06:02,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:02,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 17:06:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:02,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:02,145 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:02,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:06:02,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:02,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:06:02,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:02,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:02,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:02,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:06:02,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:02,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-24 17:06:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:02,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:02,159 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:02,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:06:02,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:02,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:06:02,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:02,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:02,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 17:06:02,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:02,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:02,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 17:06:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:02,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:02,182 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:02,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:06:02,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:02,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:06:02,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:02,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:02,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 17:06:02,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:02,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:02,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 17:06:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:02,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:02,216 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:02,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:06:02,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:02,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:06:02,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:02,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:02,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 17:06:02,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:02,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 17:06:02,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000583856] [2020-09-24 17:06:02,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:06:02,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 17:06:02,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054003623] [2020-09-24 17:06:02,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 17:06:02,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:02,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 17:06:02,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:06:02,249 INFO L87 Difference]: Start difference. First operand 180 states and 204 transitions. Second operand 11 states. [2020-09-24 17:06:03,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:03,528 INFO L93 Difference]: Finished difference Result 321 states and 368 transitions. [2020-09-24 17:06:03,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 17:06:03,529 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-24 17:06:03,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:03,533 INFO L225 Difference]: With dead ends: 321 [2020-09-24 17:06:03,533 INFO L226 Difference]: Without dead ends: 195 [2020-09-24 17:06:03,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-09-24 17:06:03,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-09-24 17:06:03,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 182. [2020-09-24 17:06:03,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-09-24 17:06:03,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 207 transitions. [2020-09-24 17:06:03,559 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 207 transitions. Word has length 80 [2020-09-24 17:06:03,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:03,560 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 207 transitions. [2020-09-24 17:06:03,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 17:06:03,560 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 207 transitions. [2020-09-24 17:06:03,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-24 17:06:03,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:03,566 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 17:06:03,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:06:03,567 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:03,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:03,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1499275550, now seen corresponding path program 1 times [2020-09-24 17:06:03,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:03,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369508533] [2020-09-24 17:06:03,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:03,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:03,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:04,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:04,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:06,642 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:06,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-24 17:06:06,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:06:06,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3048 [2020-09-24 17:06:06,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:06,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:06:06,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-24 17:06:06,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 17:06:06,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:06,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:06,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:06,742 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:06,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:06:06,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:06,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:06:06,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:06,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:06,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:06,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:06,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:06,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 17:06:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:06,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:06,777 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:06,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:06:06,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:06,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:06:06,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:06,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:06,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:06,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:06,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 17:06:06,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 17:06:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:06,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:06,814 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:06,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:06:06,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:06,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 17:06:06,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:06,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:06,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:06,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:06,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:06,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:06:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:06,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:06,829 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:06,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:06:06,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:06,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:06:06,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:06,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:06,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:06,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:06,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:06,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-24 17:06:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:06,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:06,844 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:06,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:06:06,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:06,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:06:06,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:06,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:06,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:06,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:06,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:06,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 17:06:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:06,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:06,921 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:06,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 17:06:06,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:06,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 17:06:06,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:06,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:06:06,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:06,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 17:06:06,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:07,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:06:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:07,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:07,053 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:07,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:06:07,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:07,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:06:07,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:07,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:07,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:07,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:06:07,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:07,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 17:06:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:07,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:07,071 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:07,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:06:07,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:07,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:06:07,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:07,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:07,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:07,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:06:07,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:07,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-24 17:06:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:07,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:07,094 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:07,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:06:07,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:07,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:06:07,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:07,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:06:07,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:07,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 17:06:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:07,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:07,120 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:07,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:06:07,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:07,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:06:07,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:07,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:07,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:07,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 17:06:07,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:07,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-24 17:06:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:07,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:07,174 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:07,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:06:07,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:07,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 17:06:07,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:06:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:06:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:06:07,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:07,249 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 17:06:07,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369508533] [2020-09-24 17:06:07,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:06:07,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 17:06:07,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683783018] [2020-09-24 17:06:07,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 17:06:07,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:07,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 17:06:07,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:06:07,252 INFO L87 Difference]: Start difference. First operand 182 states and 207 transitions. Second operand 11 states. [2020-09-24 17:06:08,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:08,478 INFO L93 Difference]: Finished difference Result 309 states and 352 transitions. [2020-09-24 17:06:08,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 17:06:08,479 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 106 [2020-09-24 17:06:08,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:08,485 INFO L225 Difference]: With dead ends: 309 [2020-09-24 17:06:08,485 INFO L226 Difference]: Without dead ends: 200 [2020-09-24 17:06:08,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-24 17:06:08,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-09-24 17:06:08,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 189. [2020-09-24 17:06:08,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-09-24 17:06:08,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 215 transitions. [2020-09-24 17:06:08,517 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 215 transitions. Word has length 106 [2020-09-24 17:06:08,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:08,518 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 215 transitions. [2020-09-24 17:06:08,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 17:06:08,518 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 215 transitions. [2020-09-24 17:06:08,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-24 17:06:08,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:08,521 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 17:06:08,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:06:08,522 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:08,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:08,522 INFO L82 PathProgramCache]: Analyzing trace with hash 525009593, now seen corresponding path program 1 times [2020-09-24 17:06:08,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:08,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386492789] [2020-09-24 17:06:08,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:08,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:08,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:08,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:17,042 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:17,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 17:06:17,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:06:17,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8505 [2020-09-24 17:06:17,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:17,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:06:17,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 17:06:17,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:17,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:17,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:17,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:17,101 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:17,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:06:17,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:17,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:06:17,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:17,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:17,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:17,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:17,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:17,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 17:06:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:17,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:17,142 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:17,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:06:17,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:17,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 17:06:17,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:06:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:17,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:06:17,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:17,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 17:06:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:17,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:17,227 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:17,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:06:17,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:17,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 17:06:17,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:06:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:06:17,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 17:06:17,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:17,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:06:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:17,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:17,296 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:17,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:06:17,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:17,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:06:17,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:17,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:17,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:17,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:06:17,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:17,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-24 17:06:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:17,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:17,307 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:17,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:06:17,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:17,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:06:17,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:17,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:17,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:17,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:06:17,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:17,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 17:06:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:17,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:17,334 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:17,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 17:06:17,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:17,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 17:06:17,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:17,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:17,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 17:06:17,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:17,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:17,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:06:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:17,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:17,344 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:17,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:06:17,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:17,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:17,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:17,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:17,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 17:06:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:17,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:17,350 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:17,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:06:17,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:17,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:17,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:17,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:17,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:17,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:17,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:17,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-24 17:06:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:17,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:17,359 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:17,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:06:17,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:17,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:06:17,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:17,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:17,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 17:06:17,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:17,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:17,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 17:06:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:17,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:17,379 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:17,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:06:17,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:17,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:06:17,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:17,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:17,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 17:06:17,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:17,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:17,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-24 17:06:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:17,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:17,437 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:17,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 17:06:17,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:17,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 17:06:17,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:17,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:17,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 17:06:17,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:17,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:17,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 17:06:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:17,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:17,450 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:17,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:06:17,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:17,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:17,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:17,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:17,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:17,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:17,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:17,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 17:06:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:17,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:17,459 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:17,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:06:17,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:17,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:17,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:17,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:17,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:17,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:17,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:17,485 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-24 17:06:17,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386492789] [2020-09-24 17:06:17,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:06:17,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 17:06:17,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011910618] [2020-09-24 17:06:17,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 17:06:17,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:17,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 17:06:17,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-24 17:06:17,488 INFO L87 Difference]: Start difference. First operand 189 states and 215 transitions. Second operand 12 states. [2020-09-24 17:06:18,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:18,714 INFO L93 Difference]: Finished difference Result 335 states and 381 transitions. [2020-09-24 17:06:18,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 17:06:18,715 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2020-09-24 17:06:18,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:18,718 INFO L225 Difference]: With dead ends: 335 [2020-09-24 17:06:18,719 INFO L226 Difference]: Without dead ends: 199 [2020-09-24 17:06:18,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-09-24 17:06:18,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-24 17:06:18,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 191. [2020-09-24 17:06:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-24 17:06:18,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 218 transitions. [2020-09-24 17:06:18,737 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 218 transitions. Word has length 138 [2020-09-24 17:06:18,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:18,738 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 218 transitions. [2020-09-24 17:06:18,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 17:06:18,738 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 218 transitions. [2020-09-24 17:06:18,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-24 17:06:18,740 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:18,741 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] [2020-09-24 17:06:18,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:06:18,741 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:18,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:18,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1422485650, now seen corresponding path program 1 times [2020-09-24 17:06:18,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:18,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874054084] [2020-09-24 17:06:18,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 17:06:18,790 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 17:06:18,790 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 17:06:18,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:06:18,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:06:18 BoogieIcfgContainer [2020-09-24 17:06:18,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:06:18,828 INFO L168 Benchmark]: Toolchain (without parser) took 25813.07 ms. Allocated memory was 138.4 MB in the beginning and 415.8 MB in the end (delta: 277.3 MB). Free memory was 101.0 MB in the beginning and 252.4 MB in the end (delta: -151.4 MB). Peak memory consumption was 125.9 MB. Max. memory is 7.1 GB. [2020-09-24 17:06:18,829 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 17:06:18,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 493.79 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 100.3 MB in the beginning and 176.7 MB in the end (delta: -76.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-09-24 17:06:18,831 INFO L168 Benchmark]: Boogie Preprocessor took 68.96 ms. Allocated memory is still 200.8 MB. Free memory was 176.7 MB in the beginning and 174.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-24 17:06:18,832 INFO L168 Benchmark]: RCFGBuilder took 715.33 ms. Allocated memory is still 200.8 MB. Free memory was 173.7 MB in the beginning and 132.6 MB in the end (delta: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 7.1 GB. [2020-09-24 17:06:18,832 INFO L168 Benchmark]: TraceAbstraction took 24523.91 ms. Allocated memory was 200.8 MB in the beginning and 415.8 MB in the end (delta: 215.0 MB). Free memory was 131.9 MB in the beginning and 252.4 MB in the end (delta: -120.5 MB). Peak memory consumption was 94.5 MB. Max. memory is 7.1 GB. [2020-09-24 17:06:18,836 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 493.79 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 100.3 MB in the beginning and 176.7 MB in the end (delta: -76.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.96 ms. Allocated memory is still 200.8 MB. Free memory was 176.7 MB in the beginning and 174.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 715.33 ms. Allocated memory is still 200.8 MB. Free memory was 173.7 MB in the beginning and 132.6 MB in the end (delta: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24523.91 ms. Allocated memory was 200.8 MB in the beginning and 415.8 MB in the end (delta: 215.0 MB). Free memory was 131.9 MB in the beginning and 252.4 MB in the end (delta: -120.5 MB). Peak memory consumption was 94.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L100] 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; [L100] RET, EXPR nondet_tree() [L100] CALL task(nondet_tree()) [L76] 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; [L76] RET, EXPR min(t) [L76] int a = min(t); [L77] int b; [L79] CALL, EXPR size(t) [L71] COND FALSE !(!t) [L72] EXPR t->left [L72] CALL, EXPR size(t->left) [L71] COND TRUE !t [L71] return 0; [L72] RET, EXPR size(t->left) [L72] EXPR t->right [L72] CALL, EXPR size(t->right) [L71] COND TRUE !t [L71] return 0; [L72] RET, EXPR size(t->right) [L72] return size(t->left) + size(t->right) + 1; [L79] RET, EXPR size(t) [L79] int n = size(t); [L80] CALL assume_cycle_if_not(n != 0) [L9] COND FALSE !(!cond) [L80] RET assume_cycle_if_not(n != 0) [L81] EXPR, FCALL calloc(n, sizeof(int)) [L81] int *x = calloc(n, sizeof(int)); [L82] CALL tree_inorder(t, x, n) [L60] COND FALSE !(!t) [L63] EXPR t->left [L63] CALL, EXPR tree_inorder(t->left, a, i) [L60] COND TRUE !t [L61] return i; [L63] RET, EXPR tree_inorder(t->left, a, i) [L63] i = tree_inorder(t->left, a, i) [L64] EXPR i++ [L64] EXPR t->data [L64] a[i++] = t->data [L65] EXPR t->right [L65] CALL, EXPR tree_inorder(t->right, a, i) [L60] COND TRUE !t [L61] return i; [L65] RET, EXPR tree_inorder(t->right, a, i) [L65] i = tree_inorder(t->right, a, i) [L66] return i; [L82] RET tree_inorder(t, x, n) [L83] EXPR x[0] [L83] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 190 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.3s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 686 SDtfs, 1398 SDslu, 1897 SDs, 0 SdLazy, 3127 SolverSat, 526 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191occurred in iteration=4, 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, 45 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 18.5s InterpolantComputationTime, 543 NumberOfCodeBlocks, 543 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 380 ConstructedInterpolants, 0 QuantifiedInterpolants, 153483 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 78/84 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...