/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --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/elimination_max_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:35:38,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:35:38,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:35:38,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:35:38,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:35:38,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:35:38,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:35:38,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:35:38,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:35:38,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:35:38,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:35:38,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:35:38,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:35:38,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:35:38,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:35:38,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:35:38,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:35:38,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:35:38,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:35:38,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:35:38,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:35:38,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:35:38,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:35:38,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:35:38,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:35:38,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:35:38,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:35:38,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:35:38,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:35:38,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:35:38,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:35:38,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:35:38,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:35:38,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:35:38,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:35:38,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:35:38,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:35:38,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:35:38,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:35:38,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:35:38,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:35:38,358 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 21:35:38,396 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:35:38,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:35:38,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:35:38,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:35:38,399 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:35:38,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:35:38,400 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:35:38,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:35:38,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:35:38,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:35:38,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:35:38,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:35:38,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:35:38,402 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:35:38,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:35:38,403 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:35:38,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:35:38,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:35:38,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:35:38,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:35:38,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:35:38,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:35:38,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:35:38,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:35:38,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:35:38,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:35:38,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:35:38,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:35:38,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:35:38,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:35:38,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:35:38,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:35:38,914 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:35:38,916 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:35:38,917 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:35:38,918 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-09-24 21:35:39,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39dc4a992/65781509e0f3475f98e0d83075968c1d/FLAGbcbee44bd [2020-09-24 21:35:39,530 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:35:39,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-09-24 21:35:39,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39dc4a992/65781509e0f3475f98e0d83075968c1d/FLAGbcbee44bd [2020-09-24 21:35:39,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39dc4a992/65781509e0f3475f98e0d83075968c1d [2020-09-24 21:35:39,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:35:39,888 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:35:39,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:35:39,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:35:39,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:35:39,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:35:39" (1/1) ... [2020-09-24 21:35:39,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54f5b696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:39, skipping insertion in model container [2020-09-24 21:35:39,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:35:39" (1/1) ... [2020-09-24 21:35:39,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:35:39,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:35:40,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:35:40,180 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:35:40,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:35:40,224 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:35:40,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:40 WrapperNode [2020-09-24 21:35:40,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:35:40,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:35:40,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:35:40,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:35:40,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:40" (1/1) ... [2020-09-24 21:35:40,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:40" (1/1) ... [2020-09-24 21:35:40,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:40" (1/1) ... [2020-09-24 21:35:40,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:40" (1/1) ... [2020-09-24 21:35:40,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:40" (1/1) ... [2020-09-24 21:35:40,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:40" (1/1) ... [2020-09-24 21:35:40,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:40" (1/1) ... [2020-09-24 21:35:40,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:35:40,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:35:40,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:35:40,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:35:40,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:40" (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 21:35:40,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:35:40,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:35:40,427 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 21:35:40,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 21:35:40,427 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-24 21:35:40,427 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:35:40,427 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-24 21:35:40,428 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 21:35:40,428 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 21:35:40,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:35:40,428 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:35:40,428 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 21:35:40,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 21:35:40,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:35:40,429 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 21:35:40,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:35:40,429 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:35:40,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:35:40,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-24 21:35:40,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:35:40,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:35:40,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:35:40,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:35:40,767 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:35:40,767 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:35:40,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:35:40 BoogieIcfgContainer [2020-09-24 21:35:40,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:35:40,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:35:40,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:35:40,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:35:40,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:35:39" (1/3) ... [2020-09-24 21:35:40,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696c8e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:35:40, skipping insertion in model container [2020-09-24 21:35:40,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:40" (2/3) ... [2020-09-24 21:35:40,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696c8e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:35:40, skipping insertion in model container [2020-09-24 21:35:40,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:35:40" (3/3) ... [2020-09-24 21:35:40,783 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2020-09-24 21:35:40,794 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:35:40,806 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:35:40,828 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:35:40,860 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:35:40,860 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:35:40,860 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:35:40,860 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:35:40,861 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:35:40,861 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:35:40,861 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:35:40,861 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:35:40,887 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-09-24 21:35:40,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 21:35:40,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:35:40,897 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] [2020-09-24 21:35:40,897 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:35:40,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:35:40,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1490874143, now seen corresponding path program 1 times [2020-09-24 21:35:40,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:35:40,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24012779] [2020-09-24 21:35:40,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:35:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:41,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:41,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:41,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 21:35:41,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:41,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-09-24 21:35:41,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:41,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:35:41,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 21:35:41,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:35:41,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:35:41,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:35:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:41,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:41,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:41,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:35:41,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:41,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:35:41,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:35:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:35:41,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:41,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:35:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:41,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:41,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:41,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:35:41,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:41,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:35:41,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:41,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:35:41,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:41,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:35:41,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:41,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 21:35:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:41,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:41,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:41,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:35:41,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:41,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 21:35:41,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:41,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:35:41,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:41,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:35:41,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:42,020 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 21:35:42,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24012779] [2020-09-24 21:35:42,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:35:42,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 21:35:42,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823295934] [2020-09-24 21:35:42,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:35:42,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:35:42,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:35:42,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:35:42,058 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 10 states. [2020-09-24 21:35:42,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:35:42,999 INFO L93 Difference]: Finished difference Result 209 states and 241 transitions. [2020-09-24 21:35:43,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:35:43,002 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-09-24 21:35:43,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:35:43,017 INFO L225 Difference]: With dead ends: 209 [2020-09-24 21:35:43,017 INFO L226 Difference]: Without dead ends: 123 [2020-09-24 21:35:43,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:35:43,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-24 21:35:43,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 108. [2020-09-24 21:35:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-24 21:35:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 115 transitions. [2020-09-24 21:35:43,101 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 115 transitions. Word has length 31 [2020-09-24 21:35:43,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:35:43,102 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 115 transitions. [2020-09-24 21:35:43,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:35:43,102 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 115 transitions. [2020-09-24 21:35:43,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 21:35:43,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:35:43,109 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 21:35:43,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:35:43,110 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:35:43,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:35:43,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1249778318, now seen corresponding path program 1 times [2020-09-24 21:35:43,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:35:43,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623194873] [2020-09-24 21:35:43,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:35:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:43,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:43,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:44,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:44,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 21:35:44,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:35:44,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1773 [2020-09-24 21:35:44,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:44,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:35:44,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 21:35:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 21:35:44,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:45,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:35:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:45,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:45,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:45,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:35:45,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:45,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:35:45,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:35:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:35:45,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:45,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:35:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:45,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:45,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:45,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:35:45,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:35:45,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:35:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:35:45,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:45,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 21:35:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:45,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:45,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:45,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:35:45,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:45,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:35:45,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:45,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:35:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:35:45,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:45,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:35:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:45,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:45,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:45,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:35:45,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:45,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:35:45,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:35:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:45,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:35:45,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:35:45,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623194873] [2020-09-24 21:35:45,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:35:45,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 21:35:45,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095939707] [2020-09-24 21:35:45,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 21:35:45,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:35:45,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 21:35:45,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:35:45,219 INFO L87 Difference]: Start difference. First operand 108 states and 115 transitions. Second operand 15 states. [2020-09-24 21:35:46,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:35:46,865 INFO L93 Difference]: Finished difference Result 189 states and 205 transitions. [2020-09-24 21:35:46,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:35:46,867 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-09-24 21:35:46,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:35:46,872 INFO L225 Difference]: With dead ends: 189 [2020-09-24 21:35:46,873 INFO L226 Difference]: Without dead ends: 187 [2020-09-24 21:35:46,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2020-09-24 21:35:46,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-09-24 21:35:46,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 153. [2020-09-24 21:35:46,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-24 21:35:46,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 165 transitions. [2020-09-24 21:35:46,897 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 165 transitions. Word has length 52 [2020-09-24 21:35:46,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:35:46,898 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 165 transitions. [2020-09-24 21:35:46,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 21:35:46,898 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 165 transitions. [2020-09-24 21:35:46,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 21:35:46,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:35:46,901 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 21:35:46,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:35:46,901 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:35:46,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:35:46,901 INFO L82 PathProgramCache]: Analyzing trace with hash -448975570, now seen corresponding path program 1 times [2020-09-24 21:35:46,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:35:46,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023993934] [2020-09-24 21:35:46,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:35:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:46,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:47,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:47,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:51,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:51,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 21:35:51,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:35:51,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 21:35:51,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:51,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:35:51,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 21:35:51,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 21:35:51,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:52,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:35:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:52,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:52,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:52,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:35:52,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:52,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:35:52,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:52,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:35:52,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:52,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:35:52,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:52,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:35:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:52,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:52,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:52,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:35:52,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:52,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:35:52,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:52,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:35:52,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:52,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:35:52,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 21:35:52,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 21:35:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:52,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:52,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:52,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:35:52,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:52,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:35:52,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:35:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:35:52,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:35:52,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:35:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:52,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:52,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:52,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:35:52,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:52,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:35:52,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:35:52,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:52,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:35:52,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:52,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:35:52,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023993934] [2020-09-24 21:35:52,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:35:52,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 21:35:52,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191825113] [2020-09-24 21:35:52,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:35:52,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:35:52,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:35:52,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:35:52,179 INFO L87 Difference]: Start difference. First operand 153 states and 165 transitions. Second operand 11 states. [2020-09-24 21:35:52,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:35:52,713 INFO L93 Difference]: Finished difference Result 230 states and 251 transitions. [2020-09-24 21:35:52,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:35:52,715 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-09-24 21:35:52,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:35:52,716 INFO L225 Difference]: With dead ends: 230 [2020-09-24 21:35:52,716 INFO L226 Difference]: Without dead ends: 137 [2020-09-24 21:35:52,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:35:52,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-24 21:35:52,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2020-09-24 21:35:52,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-09-24 21:35:52,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 145 transitions. [2020-09-24 21:35:52,752 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 145 transitions. Word has length 52 [2020-09-24 21:35:52,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:35:52,753 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 145 transitions. [2020-09-24 21:35:52,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:35:52,757 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 145 transitions. [2020-09-24 21:35:52,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 21:35:52,760 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:35:52,760 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 21:35:52,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:35:52,760 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:35:52,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:35:52,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1366237712, now seen corresponding path program 1 times [2020-09-24 21:35:52,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:35:52,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822293645] [2020-09-24 21:35:52,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:35:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:52,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:53,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:57,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:57,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-24 21:35:57,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:35:57,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4403 [2020-09-24 21:35:57,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:57,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:35:57,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 21:35:57,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 21:35:57,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:57,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:35:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:57,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:57,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:57,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:35:57,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:57,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:35:57,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:35:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:57,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:35:57,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:57,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:35:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:57,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:57,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:57,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:35:57,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:57,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:35:57,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:57,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:35:57,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:57,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:35:57,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:57,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 21:35:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:57,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:57,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:57,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:35:57,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:57,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:35:57,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:57,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:35:57,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:57,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:35:57,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 21:35:57,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:35:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:57,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:57,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:57,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:35:57,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:57,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:35:57,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:57,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:35:57,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:57,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:35:57,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:57,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 21:35:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:57,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:57,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:57,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:35:57,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:57,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:35:57,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:35:57,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:57,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 21:35:57,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:57,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 21:35:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:57,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:57,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:57,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:35:57,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:57,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 21:35:57,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:57,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:35:57,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:57,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:35:57,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:57,544 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 21:35:57,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822293645] [2020-09-24 21:35:57,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:35:57,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 21:35:57,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550314460] [2020-09-24 21:35:57,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 21:35:57,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:35:57,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 21:35:57,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:35:57,547 INFO L87 Difference]: Start difference. First operand 137 states and 145 transitions. Second operand 15 states. [2020-09-24 21:35:58,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:35:58,383 INFO L93 Difference]: Finished difference Result 147 states and 155 transitions. [2020-09-24 21:35:58,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:35:58,384 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2020-09-24 21:35:58,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:35:58,389 INFO L225 Difference]: With dead ends: 147 [2020-09-24 21:35:58,389 INFO L226 Difference]: Without dead ends: 87 [2020-09-24 21:35:58,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2020-09-24 21:35:58,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-24 21:35:58,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2020-09-24 21:35:58,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-24 21:35:58,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2020-09-24 21:35:58,409 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 72 [2020-09-24 21:35:58,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:35:58,410 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2020-09-24 21:35:58,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 21:35:58,410 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2020-09-24 21:35:58,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 21:35:58,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:35:58,413 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-09-24 21:35:58,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:35:58,414 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:35:58,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:35:58,414 INFO L82 PathProgramCache]: Analyzing trace with hash 2045890305, now seen corresponding path program 2 times [2020-09-24 21:35:58,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:35:58,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169398639] [2020-09-24 21:35:58,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:35:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:58,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:58,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:58,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:36:03,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:36:03,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-24 21:36:03,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:36:03,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:36:03,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:36:03,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 21:36:03,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 21:36:03,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 21:36:03,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:36:03,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:36:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:36:03,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:36:03,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:36:03,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:36:03,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:36:03,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:36:03,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:36:03,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:36:03,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:36:03,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:36:03,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:36:03,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:36:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:36:03,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:36:03,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:36:03,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:36:03,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:36:03,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:36:03,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:36:03,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:36:03,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:36:03,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:36:03,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:36:03,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 21:36:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:36:03,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:36:03,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:36:03,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 21:36:03,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:36:03,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:36:03,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:36:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:36:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:36:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:36:03,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:36:03,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:36:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:36:03,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:36:03,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:36:03,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:36:03,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:36:03,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:36:03,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:36:03,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:36:03,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:36:03,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:36:03,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:36:03,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:36:03,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 21:36:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:36:03,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:36:03,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:36:03,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:36:03,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:36:03,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:36:03,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:36:03,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:36:03,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:36:03,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:36:03,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:36:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:36:03,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169398639] [2020-09-24 21:36:03,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:36:03,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-24 21:36:03,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857617362] [2020-09-24 21:36:03,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-24 21:36:03,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:36:03,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-24 21:36:03,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2020-09-24 21:36:03,970 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 22 states. [2020-09-24 21:36:05,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:36:05,183 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2020-09-24 21:36:05,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 21:36:05,183 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 73 [2020-09-24 21:36:05,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:36:05,184 INFO L225 Difference]: With dead ends: 87 [2020-09-24 21:36:05,184 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 21:36:05,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=415, Invalid=1477, Unknown=0, NotChecked=0, Total=1892 [2020-09-24 21:36:05,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 21:36:05,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 21:36:05,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 21:36:05,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 21:36:05,188 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 73 [2020-09-24 21:36:05,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:36:05,188 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 21:36:05,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-24 21:36:05,188 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 21:36:05,188 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 21:36:05,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:36:05,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 21:36:05,696 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-09-24 21:36:05,862 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-09-24 21:36:05,982 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-09-24 21:36:06,107 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-09-24 21:36:06,122 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 21:36:06,122 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 21:36:06,122 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 21:36:06,123 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|)) [2020-09-24 21:36:06,123 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:36:06,124 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:36:06,124 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 21:36:06,124 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 21:36:06,124 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 21:36:06,124 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 5 7) the Hoare annotation is: true [2020-09-24 21:36:06,125 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 21:36:06,125 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 21:36:06,125 INFO L268 CegarLoopResult]: For program point L6-3(lines 5 7) no Hoare annotation was computed. [2020-09-24 21:36:06,125 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-09-24 21:36:06,126 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 39 48) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-24 21:36:06,126 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 39 48) no Hoare annotation was computed. [2020-09-24 21:36:06,126 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-24 21:36:06,126 INFO L268 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-09-24 21:36:06,127 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 39 48) no Hoare annotation was computed. [2020-09-24 21:36:06,128 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= (select |#memory_int| |main_#t~malloc10.base|) .cse0))) [2020-09-24 21:36:06,129 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-09-24 21:36:06,129 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-09-24 21:36:06,129 INFO L264 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-24 21:36:06,129 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-09-24 21:36:06,129 INFO L268 CegarLoopResult]: For program point L44-2(line 44) no Hoare annotation was computed. [2020-09-24 21:36:06,129 INFO L268 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2020-09-24 21:36:06,130 INFO L268 CegarLoopResult]: For program point L44-3(line 44) no Hoare annotation was computed. [2020-09-24 21:36:06,131 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-24 21:36:06,132 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-24 21:36:06,132 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 21:36:06,132 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-24 21:36:06,132 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 14 37) the Hoare annotation is: true [2020-09-24 21:36:06,132 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (let ((.cse4 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse2 (= (select |#memory_int| check_~a.base) .cse4)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse4)))) (and (or .cse0 (not (<= 1 |check_#in~x|)) .cse1 .cse2) (or .cse0 (and (or (let ((.cse3 (+ check_~y 1))) (and (<= .cse3 |check_#in~n|) (<= .cse3 check_~n) (<= 1 check_~x))) (= check_~x 0)) .cse2) (not (= |check_#in~x| 0)) .cse1)))) [2020-09-24 21:36:06,133 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-24 21:36:06,133 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-24 21:36:06,133 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 21:36:06,133 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 21:36:06,133 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 21:36:06,133 INFO L268 CegarLoopResult]: For program point L23-2(lines 23 24) no Hoare annotation was computed. [2020-09-24 21:36:06,135 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-24 21:36:06,135 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-24 21:36:06,135 INFO L268 CegarLoopResult]: For program point L23-5(line 23) no Hoare annotation was computed. [2020-09-24 21:36:06,135 INFO L268 CegarLoopResult]: For program point L23-6(line 23) no Hoare annotation was computed. [2020-09-24 21:36:06,136 INFO L268 CegarLoopResult]: For program point L23-7(line 23) no Hoare annotation was computed. [2020-09-24 21:36:06,136 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 21:36:06,136 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 21:36:06,136 INFO L268 CegarLoopResult]: For program point L23-9(line 23) no Hoare annotation was computed. [2020-09-24 21:36:06,136 INFO L268 CegarLoopResult]: For program point L23-10(line 23) no Hoare annotation was computed. [2020-09-24 21:36:06,137 INFO L264 CegarLoopResult]: At program point L23-11(lines 23 24) the Hoare annotation is: (let ((.cse3 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse3)))) (and (or .cse0 (not (<= 1 |check_#in~x|)) .cse1 (<= 2 check_~x)) (or (let ((.cse2 (+ check_~y 1))) (and (<= .cse2 |check_#in~n|) (<= .cse2 check_~n) (= (select |#memory_int| check_~a.base) .cse3) (<= 1 check_~x))) .cse0 (not (<= 0 |check_#in~x|)) .cse1)))) [2020-09-24 21:36:06,138 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 14 37) no Hoare annotation was computed. [2020-09-24 21:36:06,138 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (let ((.cse6 ((as const (Array Int Int)) 0))) (let ((.cse3 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse0 (= check_~ax~0 0)) (.cse1 (= check_~ai~0 0)) (.cse2 (= (select |#memory_int| check_~a.base) .cse6)) (.cse4 (not (= (select |#memory_int| |check_#in~a.base|) .cse6)))) (and (or (and .cse0 .cse1 .cse2) .cse3 (not (<= 1 |check_#in~x|)) .cse4) (or .cse3 (and .cse0 (or (let ((.cse5 (+ check_~y 1))) (and (<= .cse5 |check_#in~n|) (<= .cse5 check_~n) (<= 1 check_~x))) (= check_~x 0)) .cse1 .cse2) (not (= |check_#in~x| 0)) .cse4)))) [2020-09-24 21:36:06,138 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-09-24 21:36:06,138 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-24 21:36:06,138 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-09-24 21:36:06,139 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 21:36:06,139 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-24 21:36:06,139 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-24 21:36:06,139 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 21:36:06,139 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-24 21:36:06,139 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 21:36:06,139 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-24 21:36:06,139 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 21:36:06,140 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-24 21:36:06,140 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 14 37) no Hoare annotation was computed. [2020-09-24 21:36:06,140 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse5 ((as const (Array Int Int)) 0)) (.cse3 (+ check_~y 1))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse2 (<= .cse3 |check_#in~n|)) (.cse4 (= (select |#memory_int| check_~a.base) .cse5)) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse5)))) (and (or .cse0 .cse1 (not (<= 2 |check_#in~x|)) (<= 2 check_~x)) (or .cse0 (and .cse2 (<= .cse3 check_~n) .cse4 (<= 1 check_~x)) (not (<= 1 |check_#in~x|)) .cse1) (or .cse0 (and (< check_~y check_~n) .cse2 .cse4 (= check_~x 0)) (not (= |check_#in~x| 0)) .cse1)))) [2020-09-24 21:36:06,140 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 21:36:06,140 INFO L268 CegarLoopResult]: For program point L14(lines 14 37) no Hoare annotation was computed. [2020-09-24 21:36:06,141 INFO L268 CegarLoopResult]: For program point L14-1(lines 14 37) no Hoare annotation was computed. [2020-09-24 21:36:06,141 INFO L268 CegarLoopResult]: For program point L14-2(lines 14 37) no Hoare annotation was computed. [2020-09-24 21:36:06,141 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 10) the Hoare annotation is: true [2020-09-24 21:36:06,141 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 8 10) no Hoare annotation was computed. [2020-09-24 21:36:06,141 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 21:36:06,141 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 21:36:06,141 INFO L268 CegarLoopResult]: For program point L9-3(lines 8 10) no Hoare annotation was computed. [2020-09-24 21:36:06,142 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-09-24 21:36:06,142 INFO L264 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-09-24 21:36:06,142 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:36:06,142 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-09-24 21:36:06,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:36:06 BoogieIcfgContainer [2020-09-24 21:36:06,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:36:06,162 INFO L168 Benchmark]: Toolchain (without parser) took 26276.21 ms. Allocated memory was 144.2 MB in the beginning and 367.0 MB in the end (delta: 222.8 MB). Free memory was 107.0 MB in the beginning and 192.6 MB in the end (delta: -85.6 MB). Peak memory consumption was 137.2 MB. Max. memory is 7.1 GB. [2020-09-24 21:36:06,165 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory was 125.6 MB in the beginning and 125.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 21:36:06,171 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.53 ms. Allocated memory is still 144.2 MB. Free memory was 106.3 MB in the beginning and 96.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-24 21:36:06,173 INFO L168 Benchmark]: Boogie Preprocessor took 119.08 ms. Allocated memory was 144.2 MB in the beginning and 205.5 MB in the end (delta: 61.3 MB). Free memory was 96.0 MB in the beginning and 183.5 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:36:06,174 INFO L168 Benchmark]: RCFGBuilder took 427.40 ms. Allocated memory is still 205.5 MB. Free memory was 183.5 MB in the beginning and 162.9 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:36:06,175 INFO L168 Benchmark]: TraceAbstraction took 25382.31 ms. Allocated memory was 205.5 MB in the beginning and 367.0 MB in the end (delta: 161.5 MB). Free memory was 162.2 MB in the beginning and 192.6 MB in the end (delta: -30.3 MB). Peak memory consumption was 131.2 MB. Max. memory is 7.1 GB. [2020-09-24 21:36:06,186 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory was 125.6 MB in the beginning and 125.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 337.53 ms. Allocated memory is still 144.2 MB. Free memory was 106.3 MB in the beginning and 96.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.08 ms. Allocated memory was 144.2 MB in the beginning and 205.5 MB in the end (delta: 61.3 MB). Free memory was 96.0 MB in the beginning and 183.5 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 427.40 ms. Allocated memory is still 205.5 MB. Free memory was 183.5 MB in the beginning and 162.9 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25382.31 ms. Allocated memory was 205.5 MB in the beginning and 367.0 MB in the end (delta: 161.5 MB). Free memory was 162.2 MB in the beginning and 192.6 MB in the end (delta: -30.3 MB). Peak memory consumption was 131.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.3s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 310 SDtfs, 1295 SDslu, 471 SDs, 0 SdLazy, 3317 SolverSat, 311 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=153occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 60 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 74 PreInvPairs, 88 NumberOfFragments, 353 HoareAnnotationTreeSize, 74 FomulaSimplifications, 597 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 15 FomulaSimplificationsInter, 734 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 18.4s InterpolantComputationTime, 280 NumberOfCodeBlocks, 280 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 72856 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 49/64 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...