/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/lcp.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 21:15:13,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 21:15:13,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 21:15:13,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 21:15:13,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 21:15:13,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 21:15:13,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 21:15:13,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 21:15:13,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 21:15:13,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 21:15:13,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 21:15:14,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 21:15:14,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 21:15:14,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 21:15:14,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 21:15:14,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 21:15:14,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 21:15:14,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 21:15:14,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 21:15:14,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 21:15:14,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 21:15:14,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 21:15:14,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 21:15:14,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 21:15:14,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 21:15:14,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 21:15:14,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 21:15:14,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 21:15:14,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 21:15:14,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 21:15:14,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 21:15:14,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 21:15:14,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 21:15:14,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 21:15:14,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 21:15:14,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 21:15:14,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 21:15:14,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 21:15:14,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 21:15:14,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 21:15:14,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 21:15:14,057 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 21:15:14,092 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 21:15:14,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 21:15:14,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 21:15:14,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 21:15:14,096 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 21:15:14,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 21:15:14,096 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 21:15:14,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 21:15:14,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 21:15:14,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 21:15:14,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 21:15:14,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 21:15:14,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 21:15:14,099 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 21:15:14,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 21:15:14,099 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 21:15:14,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 21:15:14,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 21:15:14,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 21:15:14,100 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 21:15:14,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 21:15:14,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 21:15:14,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 21:15:14,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 21:15:14,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 21:15:14,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 21:15:14,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 21:15:14,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 21:15:14,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 21:15:14,102 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 21:15:14,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 21:15:14,405 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 21:15:14,408 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 21:15:14,410 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 21:15:14,410 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 21:15:14,411 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/lcp.c [2020-10-12 21:15:14,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ae466887/d36870b8faa44498a6942ae082f67eb7/FLAG08de2861a [2020-10-12 21:15:14,887 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 21:15:14,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/lcp.c [2020-10-12 21:15:14,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ae466887/d36870b8faa44498a6942ae082f67eb7/FLAG08de2861a [2020-10-12 21:15:15,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ae466887/d36870b8faa44498a6942ae082f67eb7 [2020-10-12 21:15:15,224 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 21:15:15,226 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 21:15:15,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 21:15:15,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 21:15:15,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 21:15:15,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:15:15" (1/1) ... [2020-10-12 21:15:15,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fb9198f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:15, skipping insertion in model container [2020-10-12 21:15:15,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:15:15" (1/1) ... [2020-10-12 21:15:15,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 21:15:15,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 21:15:15,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 21:15:15,491 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 21:15:15,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 21:15:15,613 INFO L208 MainTranslator]: Completed translation [2020-10-12 21:15:15,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:15 WrapperNode [2020-10-12 21:15:15,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 21:15:15,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 21:15:15,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 21:15:15,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 21:15:15,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:15" (1/1) ... [2020-10-12 21:15:15,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:15" (1/1) ... [2020-10-12 21:15:15,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:15" (1/1) ... [2020-10-12 21:15:15,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:15" (1/1) ... [2020-10-12 21:15:15,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:15" (1/1) ... [2020-10-12 21:15:15,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:15" (1/1) ... [2020-10-12 21:15:15,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:15" (1/1) ... [2020-10-12 21:15:15,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 21:15:15,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 21:15:15,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 21:15:15,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 21:15:15,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 21:15:15,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 21:15:15,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 21:15:15,714 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 21:15:15,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 21:15:15,714 INFO L138 BoogieDeclarations]: Found implementation of procedure lcp [2020-10-12 21:15:15,714 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-12 21:15:15,714 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 21:15:15,714 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 21:15:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 21:15:15,715 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 21:15:15,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 21:15:15,715 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 21:15:15,715 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 21:15:15,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 21:15:15,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 21:15:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure lcp [2020-10-12 21:15:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 21:15:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 21:15:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 21:15:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 21:15:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 21:15:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 21:15:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 21:15:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 21:15:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 21:15:16,050 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 21:15:16,051 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 21:15:16,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:15:16 BoogieIcfgContainer [2020-10-12 21:15:16,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 21:15:16,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 21:15:16,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 21:15:16,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 21:15:16,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:15:15" (1/3) ... [2020-10-12 21:15:16,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb13c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:15:16, skipping insertion in model container [2020-10-12 21:15:16,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:15" (2/3) ... [2020-10-12 21:15:16,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb13c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:15:16, skipping insertion in model container [2020-10-12 21:15:16,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:15:16" (3/3) ... [2020-10-12 21:15:16,064 INFO L109 eAbstractionObserver]: Analyzing ICFG lcp.c [2020-10-12 21:15:16,075 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 21:15:16,082 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 21:15:16,095 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 21:15:16,117 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 21:15:16,117 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 21:15:16,117 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 21:15:16,117 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 21:15:16,117 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 21:15:16,117 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 21:15:16,117 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 21:15:16,118 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 21:15:16,135 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-12 21:15:16,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 21:15:16,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:16,142 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:15:16,143 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:16,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:16,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1828758676, now seen corresponding path program 1 times [2020-10-12 21:15:16,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:16,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85041449] [2020-10-12 21:15:16,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:16,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:16,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:16,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:16,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:16,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:17,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:17,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 21:15:17,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:15:17,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 758 [2020-10-12 21:15:17,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:17,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 21:15:17,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 21:15:17,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 21:15:17,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 21:15:17,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:15:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:17,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:17,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:17,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:17,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:17,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:15:17,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:17,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:17,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:15:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:17,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:17,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:17,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:17,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:17,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:15:17,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:15:17,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:17,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:17,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:17,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:17,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:17,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 21:15:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:17,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:17,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:17,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:17,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:17,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 21:15:17,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:17,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:15:17,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:17,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:17,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:17,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 21:15:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:17,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:17,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:17,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:17,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:17,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:15:17,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 21:15:17,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:17,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:17,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:17,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:17,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 21:15:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:17,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:17,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:17,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:17,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:15:17,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:15:17,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 21:15:17,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:17,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:17,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:17,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:17,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 21:15:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:17,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:17,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:17,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:17,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:17,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:15:17,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:15:17,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:17,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:17,351 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 21:15:17,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85041449] [2020-10-12 21:15:17,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:15:17,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 21:15:17,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635513301] [2020-10-12 21:15:17,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 21:15:17,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:15:17,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 21:15:17,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 21:15:17,381 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 12 states. [2020-10-12 21:15:18,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:15:18,097 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2020-10-12 21:15:18,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 21:15:18,099 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-12 21:15:18,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:15:18,109 INFO L225 Difference]: With dead ends: 95 [2020-10-12 21:15:18,110 INFO L226 Difference]: Without dead ends: 43 [2020-10-12 21:15:18,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2020-10-12 21:15:18,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-12 21:15:18,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-12 21:15:18,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 21:15:18,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-10-12 21:15:18,170 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 41 [2020-10-12 21:15:18,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:15:18,170 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-10-12 21:15:18,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 21:15:18,171 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-10-12 21:15:18,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 21:15:18,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:18,175 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:15:18,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 21:15:18,176 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:18,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:18,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1205377979, now seen corresponding path program 1 times [2020-10-12 21:15:18,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:18,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237219042] [2020-10-12 21:15:18,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:18,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:18,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:19,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:21,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 21:15:21,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:15:21,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3197 [2020-10-12 21:15:21,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:21,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 21:15:21,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 21:15:21,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 21:15:21,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:21,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:15:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:21,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:21,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:21,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:21,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 21:15:21,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:21,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 21:15:21,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:15:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:21,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:21,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:21,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:21,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:21,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:21,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:21,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:21,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:21,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:21,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 21:15:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:21,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:21,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:21,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:21,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:15:21,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:21,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:21,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:21,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:21,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:21,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 21:15:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:21,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:21,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:21,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:21,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:15:21,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:21,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:21,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:21,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 21:15:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:21,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:21,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 21:15:21,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:21,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 21:15:21,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:21,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 21:15:21,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:21,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 21:15:21,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:21,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-12 21:15:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:21,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:21,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:21,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:21,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:15:21,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:21,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 21:15:21,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 21:15:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:21,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:21,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:21,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:21,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:15:21,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:21,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:21,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:21,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:21,951 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 21:15:21,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237219042] [2020-10-12 21:15:21,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:15:21,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 21:15:21,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795709726] [2020-10-12 21:15:21,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 21:15:21,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:15:21,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 21:15:21,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-12 21:15:21,960 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 15 states. [2020-10-12 21:15:22,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:15:22,927 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2020-10-12 21:15:22,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 21:15:22,928 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-10-12 21:15:22,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:15:22,931 INFO L225 Difference]: With dead ends: 66 [2020-10-12 21:15:22,932 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 21:15:22,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2020-10-12 21:15:22,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 21:15:22,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-10-12 21:15:22,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 21:15:22,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-12 21:15:22,944 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 50 [2020-10-12 21:15:22,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:15:22,946 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-12 21:15:22,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 21:15:22,946 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-12 21:15:22,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 21:15:22,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:22,948 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:15:22,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 21:15:22,949 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:22,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:22,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1345926589, now seen corresponding path program 1 times [2020-10-12 21:15:22,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:22,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371076063] [2020-10-12 21:15:22,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:22,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:23,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:23,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:23,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:24,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:24,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:24,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 21:15:24,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:15:24,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1960 [2020-10-12 21:15:24,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 21:15:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 21:15:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 21:15:24,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:24,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:15:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:24,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:24,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:25,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:25,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:25,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:15:25,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:25,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:25,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:25,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:25,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:25,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:15:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:25,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:25,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:25,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:25,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:25,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:25,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:25,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:25,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:25,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:25,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:25,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 21:15:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:25,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:25,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:25,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:25,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:25,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:15:25,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:25,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:25,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:25,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:25,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 21:15:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:25,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:25,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:25,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:25,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:25,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:15:25,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:25,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:25,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:25,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:25,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:25,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 21:15:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:25,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:25,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:25,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:25,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 21:15:25,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:15:25,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 21:15:25,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:25,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 21:15:25,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:25,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 21:15:25,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:25,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-12 21:15:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:25,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:25,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:25,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:25,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:25,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:15:25,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:25,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:25,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:25,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:25,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:25,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 21:15:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:25,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:25,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:25,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:25,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:25,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:15:25,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:25,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:25,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:25,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:25,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:25,194 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 21:15:25,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371076063] [2020-10-12 21:15:25,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:15:25,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 21:15:25,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663828112] [2020-10-12 21:15:25,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 21:15:25,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:15:25,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 21:15:25,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-12 21:15:25,197 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 12 states. [2020-10-12 21:15:25,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:15:25,917 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2020-10-12 21:15:25,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 21:15:25,917 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-12 21:15:25,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:15:25,919 INFO L225 Difference]: With dead ends: 65 [2020-10-12 21:15:25,919 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 21:15:25,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-10-12 21:15:25,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 21:15:25,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-12 21:15:25,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 21:15:25,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-10-12 21:15:25,930 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 50 [2020-10-12 21:15:25,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:15:25,930 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-10-12 21:15:25,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 21:15:25,931 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-10-12 21:15:25,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 21:15:25,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:25,932 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:15:25,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 21:15:25,933 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:25,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:25,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1848466569, now seen corresponding path program 1 times [2020-10-12 21:15:25,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:25,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721539723] [2020-10-12 21:15:25,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:25,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:26,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:26,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:26,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 21:15:26,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:15:26,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-10-12 21:15:26,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:26,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 21:15:26,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 21:15:26,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 21:15:26,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:27,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:15:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:27,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:27,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:27,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:27,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:27,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:27,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:27,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:27,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:15:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:27,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:27,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:27,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:27,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:27,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:15:27,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:27,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:27,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:27,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:27,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:27,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 21:15:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:27,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:27,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:27,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:27,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:27,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:27,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:27,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:27,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:27,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:27,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:27,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 21:15:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:27,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:27,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:27,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:27,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:27,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:27,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:27,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 21:15:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:27,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:27,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:27,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 21:15:27,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:27,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 21:15:27,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 21:15:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 21:15:27,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:27,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 21:15:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:27,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:27,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:27,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:27,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:27,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 21:15:27,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:27,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:27,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:27,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:27,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:27,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 21:15:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:27,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:27,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:27,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:27,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:27,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:15:27,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:27,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:27,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:27,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:27,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:27,370 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 21:15:27,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721539723] [2020-10-12 21:15:27,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:15:27,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 21:15:27,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339503891] [2020-10-12 21:15:27,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 21:15:27,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:15:27,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 21:15:27,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-12 21:15:27,373 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 15 states. [2020-10-12 21:15:28,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:15:28,023 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-10-12 21:15:28,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 21:15:28,024 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-10-12 21:15:28,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:15:28,025 INFO L225 Difference]: With dead ends: 46 [2020-10-12 21:15:28,025 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 21:15:28,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2020-10-12 21:15:28,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 21:15:28,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 21:15:28,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 21:15:28,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 21:15:28,027 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-10-12 21:15:28,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:15:28,027 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 21:15:28,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 21:15:28,027 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 21:15:28,028 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 21:15:28,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 21:15:28,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 21:15:28,403 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-12 21:15:28,403 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-12 21:15:28,403 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 21:15:28,404 INFO L268 CegarLoopResult]: For program point lcpFINAL(lines 14 20) no Hoare annotation was computed. [2020-10-12 21:15:28,404 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-10-12 21:15:28,404 INFO L268 CegarLoopResult]: For program point L16-3(lines 16 18) no Hoare annotation was computed. [2020-10-12 21:15:28,404 INFO L268 CegarLoopResult]: For program point lcpEXIT(lines 14 20) no Hoare annotation was computed. [2020-10-12 21:15:28,404 INFO L264 CegarLoopResult]: At program point L16-5(lines 16 18) the Hoare annotation is: (let ((.cse0 (= |lcp_#in~x| lcp_~x)) (.cse1 (= |lcp_#in~n| lcp_~n)) (.cse2 (= |lcp_#in~y| lcp_~y))) (or (and .cse0 .cse1 (= |lcp_#in~a.offset| lcp_~a.offset) (= |lcp_#in~a.base| lcp_~a.base) .cse2) (and .cse0 .cse1 (or (<= |lcp_#in~n| (+ lcp_~l~0 |lcp_#in~x|)) (<= |lcp_#in~n| (+ lcp_~l~0 |lcp_#in~y|))) .cse2))) [2020-10-12 21:15:28,404 INFO L268 CegarLoopResult]: For program point L16-6(lines 16 18) no Hoare annotation was computed. [2020-10-12 21:15:28,404 INFO L271 CegarLoopResult]: At program point lcpENTRY(lines 14 20) the Hoare annotation is: true [2020-10-12 21:15:28,405 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 21:15:28,405 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 21:15:28,405 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 21:15:28,405 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 21:15:28,405 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 5 7) the Hoare annotation is: true [2020-10-12 21:15:28,405 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-10-12 21:15:28,405 INFO L268 CegarLoopResult]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2020-10-12 21:15:28,406 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-10-12 21:15:28,406 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 33 47) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-10-12 21:15:28,406 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 33 47) no Hoare annotation was computed. [2020-10-12 21:15:28,407 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (or (<= main_~n~0 (+ main_~x~0 main_~l~1)) (<= main_~n~0 (+ main_~y~0 main_~l~1))) (= .cse0 (select |#memory_int| |main_#t~malloc11.base|)))) [2020-10-12 21:15:28,407 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-10-12 21:15:28,407 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-10-12 21:15:28,407 INFO L264 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc11.base|)))) [2020-10-12 21:15:28,407 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 33 47) no Hoare annotation was computed. [2020-10-12 21:15:28,408 INFO L264 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc11.base|)))) [2020-10-12 21:15:28,408 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-12 21:15:28,408 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-10-12 21:15:28,408 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-10-12 21:15:28,409 INFO L268 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-10-12 21:15:28,409 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 22 31) the Hoare annotation is: true [2020-10-12 21:15:28,409 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (or (and (not (<= |check_#in~n| (+ |check_#in~l| |check_#in~y|))) (not (<= |check_#in~n| (+ |check_#in~l| |check_#in~x|)))) (not (= (select |#memory_int| |check_#in~a.base|) ((as const (Array Int Int)) 0)))) [2020-10-12 21:15:28,409 INFO L268 CegarLoopResult]: For program point L29(lines 29 30) no Hoare annotation was computed. [2020-10-12 21:15:28,409 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-10-12 21:15:28,409 INFO L268 CegarLoopResult]: For program point L29-2(lines 22 31) no Hoare annotation was computed. [2020-10-12 21:15:28,410 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (and (not (<= |check_#in~n| (+ |check_#in~l| |check_#in~y|))) (not (<= |check_#in~n| (+ |check_#in~l| |check_#in~x|)))) (not (= (select |#memory_int| |check_#in~a.base|) .cse0)) (and (= |check_#t~mem7| |check_#t~mem6|) (or (<= check_~n (+ check_~l check_~y)) (<= check_~n (+ check_~l check_~x))) (= (select |#memory_int| check_~a.base) .cse0)))) [2020-10-12 21:15:28,410 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (and (or (<= check_~n (+ check_~l check_~y)) (<= check_~n (+ check_~l check_~x))) (= (select |#memory_int| check_~a.base) .cse0)) (and (not (<= |check_#in~n| (+ |check_#in~l| |check_#in~y|))) (not (<= |check_#in~n| (+ |check_#in~l| |check_#in~x|)))) (not (= (select |#memory_int| |check_#in~a.base|) .cse0)))) [2020-10-12 21:15:28,411 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-10-12 21:15:28,411 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-10-12 21:15:28,411 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 22 31) no Hoare annotation was computed. [2020-10-12 21:15:28,411 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 10 12) the Hoare annotation is: true [2020-10-12 21:15:28,411 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-10-12 21:15:28,411 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-10-12 21:15:28,412 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 10 12) no Hoare annotation was computed. [2020-10-12 21:15:28,412 INFO L268 CegarLoopResult]: For program point L11-3(lines 10 12) no Hoare annotation was computed. [2020-10-12 21:15:28,413 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-10-12 21:15:28,413 INFO L264 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-12 21:15:28,413 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-10-12 21:15:28,413 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-10-12 21:15:28,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 09:15:28 BoogieIcfgContainer [2020-10-12 21:15:28,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 21:15:28,446 INFO L168 Benchmark]: Toolchain (without parser) took 13219.53 ms. Allocated memory was 140.5 MB in the beginning and 371.7 MB in the end (delta: 231.2 MB). Free memory was 103.8 MB in the beginning and 185.2 MB in the end (delta: -81.4 MB). Peak memory consumption was 149.9 MB. Max. memory is 7.1 GB. [2020-10-12 21:15:28,448 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-12 21:15:28,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.57 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 103.4 MB in the beginning and 183.4 MB in the end (delta: -80.0 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-10-12 21:15:28,451 INFO L168 Benchmark]: Boogie Preprocessor took 42.91 ms. Allocated memory is still 204.5 MB. Free memory was 183.4 MB in the beginning and 181.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-10-12 21:15:28,456 INFO L168 Benchmark]: RCFGBuilder took 397.36 ms. Allocated memory is still 204.5 MB. Free memory was 181.0 MB in the beginning and 160.6 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-10-12 21:15:28,457 INFO L168 Benchmark]: TraceAbstraction took 12386.43 ms. Allocated memory was 204.5 MB in the beginning and 371.7 MB in the end (delta: 167.2 MB). Free memory was 159.9 MB in the beginning and 185.2 MB in the end (delta: -25.3 MB). Peak memory consumption was 142.0 MB. Max. memory is 7.1 GB. [2020-10-12 21:15:28,468 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 387.57 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 103.4 MB in the beginning and 183.4 MB in the end (delta: -80.0 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.91 ms. Allocated memory is still 204.5 MB. Free memory was 183.4 MB in the beginning and 181.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 397.36 ms. Allocated memory is still 204.5 MB. Free memory was 181.0 MB in the beginning and 160.6 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12386.43 ms. Allocated memory was 204.5 MB in the beginning and 371.7 MB in the end (delta: 167.2 MB). Free memory was 159.9 MB in the beginning and 185.2 MB in the end (delta: -25.3 MB). Peak memory consumption was 142.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((((\old(x) == x && \old(n) == n) && a == a) && a == a) && \old(y) == y) || (((\old(x) == x && \old(n) == n) && (\old(n) <= l + \old(x) || \old(n) <= l + \old(y))) && \old(y) == y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.9s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 125 SDtfs, 281 SDslu, 344 SDs, 0 SdLazy, 1452 SolverSat, 166 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 46 PreInvPairs, 58 NumberOfFragments, 226 HoareAnnotationTreeSize, 46 FomulaSimplifications, 87 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 18 FomulaSimplificationsInter, 660 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 190 ConstructedInterpolants, 0 QuantifiedInterpolants, 60493 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 56/57 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 correct! Received shutdown request...