/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:02:58,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:02:58,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:02:58,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:02:58,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:02:58,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:02:58,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:02:58,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:02:58,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:02:58,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:02:58,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:02:58,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:02:58,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:02:58,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:02:58,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:02:58,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:02:58,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:02:58,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:02:58,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:02:58,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:02:58,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:02:58,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:02:58,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:02:58,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:02:58,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:02:58,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:02:58,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:02:58,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:02:58,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:02:58,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 15:02:58,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:02:58,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:02:58,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:02:58,896 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 [2020-08-21 15:02:58,917 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:02:58,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:02:58,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:02:58,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:02:58,919 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:02:58,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:02:58,919 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:02:58,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:02:58,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:02:58,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:02:58,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:02:58,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:02:58,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:02:58,925 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:02:58,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:02:58,925 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:02:58,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:02:58,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:02:58,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:02:58,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:02:58,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:02:58,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:02:58,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:02:58,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:02:58,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:02:58,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:02:58,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:02:58,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:02:58,930 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:02:58,930 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 15:02:59,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:02:59,249 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:02:59,253 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:02:59,254 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:02:59,254 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:02:59,255 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-08-21 15:02:59,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/508bdee19/18a338e7673f44bba15a469f25a79a1a/FLAGac4b260bc [2020-08-21 15:02:59,795 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:02:59,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-08-21 15:02:59,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/508bdee19/18a338e7673f44bba15a469f25a79a1a/FLAGac4b260bc [2020-08-21 15:03:00,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/508bdee19/18a338e7673f44bba15a469f25a79a1a [2020-08-21 15:03:00,150 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:03:00,152 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:03:00,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:03:00,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:03:00,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:03:00,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:03:00" (1/1) ... [2020-08-21 15:03:00,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400cc21f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:00, skipping insertion in model container [2020-08-21 15:03:00,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:03:00" (1/1) ... [2020-08-21 15:03:00,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:03:00,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:03:00,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:03:00,438 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:03:00,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:03:00,588 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:03:00,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:00 WrapperNode [2020-08-21 15:03:00,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:03:00,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:03:00,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:03:00,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:03:00,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:00" (1/1) ... [2020-08-21 15:03:00,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:00" (1/1) ... [2020-08-21 15:03:00,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:00" (1/1) ... [2020-08-21 15:03:00,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:00" (1/1) ... [2020-08-21 15:03:00,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:00" (1/1) ... [2020-08-21 15:03:00,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:00" (1/1) ... [2020-08-21 15:03:00,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:00" (1/1) ... [2020-08-21 15:03:00,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:03:00,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:03:00,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:03:00,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:03:00,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:00" (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 [2020-08-21 15:03:00,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:03:00,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:03:00,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 15:03:00,697 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-08-21 15:03:00,698 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-08-21 15:03:00,698 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:03:00,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:03:00,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 15:03:00,698 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-08-21 15:03:00,698 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-08-21 15:03:00,699 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-08-21 15:03:00,699 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-08-21 15:03:00,699 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-08-21 15:03:00,699 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-08-21 15:03:00,699 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-08-21 15:03:00,700 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-08-21 15:03:00,700 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-08-21 15:03:00,700 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-08-21 15:03:00,700 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-08-21 15:03:00,700 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-08-21 15:03:00,700 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-08-21 15:03:00,700 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-08-21 15:03:00,701 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-08-21 15:03:00,701 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-08-21 15:03:00,701 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-08-21 15:03:00,701 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-08-21 15:03:00,701 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-08-21 15:03:00,701 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-08-21 15:03:00,701 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-08-21 15:03:00,702 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-08-21 15:03:00,702 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-08-21 15:03:00,702 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-08-21 15:03:00,702 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-08-21 15:03:00,702 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-08-21 15:03:00,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:03:00,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:03:00,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:03:00,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:03:00,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:03:00,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:03:00,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:03:01,096 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:03:01,097 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-21 15:03:01,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:03:01 BoogieIcfgContainer [2020-08-21 15:03:01,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:03:01,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:03:01,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:03:01,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:03:01,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:03:00" (1/3) ... [2020-08-21 15:03:01,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a02fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:03:01, skipping insertion in model container [2020-08-21 15:03:01,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:03:00" (2/3) ... [2020-08-21 15:03:01,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a02fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:03:01, skipping insertion in model container [2020-08-21 15:03:01,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:03:01" (3/3) ... [2020-08-21 15:03:01,110 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-08-21 15:03:01,121 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:03:01,129 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:03:01,146 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:03:01,167 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:03:01,167 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:03:01,167 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:03:01,168 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:03:01,168 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:03:01,168 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:03:01,168 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:03:01,168 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:03:01,190 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-21 15:03:01,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-21 15:03:01,196 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:01,197 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] [2020-08-21 15:03:01,198 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:01,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:01,204 INFO L82 PathProgramCache]: Analyzing trace with hash -2018987797, now seen corresponding path program 1 times [2020-08-21 15:03:01,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:01,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783514201] [2020-08-21 15:03:01,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:01,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:01,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 15:03:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:01,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:01,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783514201] [2020-08-21 15:03:01,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:01,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:03:01,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122624318] [2020-08-21 15:03:01,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:03:01,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:01,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:03:01,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:03:01,486 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2020-08-21 15:03:01,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:01,662 INFO L93 Difference]: Finished difference Result 93 states and 123 transitions. [2020-08-21 15:03:01,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:03:01,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-08-21 15:03:01,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:01,675 INFO L225 Difference]: With dead ends: 93 [2020-08-21 15:03:01,675 INFO L226 Difference]: Without dead ends: 43 [2020-08-21 15:03:01,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:03:01,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-21 15:03:01,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-21 15:03:01,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-21 15:03:01,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2020-08-21 15:03:01,734 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2020-08-21 15:03:01,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:01,734 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2020-08-21 15:03:01,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:03:01,735 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2020-08-21 15:03:01,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-21 15:03:01,738 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:01,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:01,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:03:01,740 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:01,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:01,741 INFO L82 PathProgramCache]: Analyzing trace with hash -171780126, now seen corresponding path program 1 times [2020-08-21 15:03:01,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:01,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799147333] [2020-08-21 15:03:01,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:01,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:01,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-21 15:03:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:01,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:01,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799147333] [2020-08-21 15:03:01,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:01,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:03:01,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208470766] [2020-08-21 15:03:01,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:03:01,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:01,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:03:01,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:03:01,882 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2020-08-21 15:03:02,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:02,004 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2020-08-21 15:03:02,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 15:03:02,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-08-21 15:03:02,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:02,006 INFO L225 Difference]: With dead ends: 78 [2020-08-21 15:03:02,006 INFO L226 Difference]: Without dead ends: 44 [2020-08-21 15:03:02,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:03:02,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-21 15:03:02,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-21 15:03:02,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-21 15:03:02,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-21 15:03:02,017 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2020-08-21 15:03:02,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:02,017 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-21 15:03:02,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:03:02,018 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-21 15:03:02,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-21 15:03:02,019 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:02,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:02,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:03:02,020 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:02,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:02,020 INFO L82 PathProgramCache]: Analyzing trace with hash 250921700, now seen corresponding path program 1 times [2020-08-21 15:03:02,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:02,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972225177] [2020-08-21 15:03:02,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:02,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:02,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-21 15:03:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:02,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:02,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972225177] [2020-08-21 15:03:02,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:02,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:03:02,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909922151] [2020-08-21 15:03:02,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:03:02,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:02,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:03:02,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:03:02,196 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 8 states. [2020-08-21 15:03:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:02,609 INFO L93 Difference]: Finished difference Result 140 states and 187 transitions. [2020-08-21 15:03:02,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 15:03:02,610 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-08-21 15:03:02,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:02,615 INFO L225 Difference]: With dead ends: 140 [2020-08-21 15:03:02,615 INFO L226 Difference]: Without dead ends: 91 [2020-08-21 15:03:02,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-08-21 15:03:02,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-08-21 15:03:02,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 66. [2020-08-21 15:03:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-21 15:03:02,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2020-08-21 15:03:02,634 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 33 [2020-08-21 15:03:02,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:02,635 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2020-08-21 15:03:02,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:03:02,635 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2020-08-21 15:03:02,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-21 15:03:02,637 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:02,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:02,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:03:02,637 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:02,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:02,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1743223006, now seen corresponding path program 1 times [2020-08-21 15:03:02,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:02,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931867283] [2020-08-21 15:03:02,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:02,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:02,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-21 15:03:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:02,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:02,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931867283] [2020-08-21 15:03:02,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:02,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 15:03:02,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069209250] [2020-08-21 15:03:02,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 15:03:02,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:02,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 15:03:02,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:03:02,747 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand 7 states. [2020-08-21 15:03:02,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:02,983 INFO L93 Difference]: Finished difference Result 136 states and 180 transitions. [2020-08-21 15:03:02,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 15:03:02,984 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-08-21 15:03:02,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:02,986 INFO L225 Difference]: With dead ends: 136 [2020-08-21 15:03:02,987 INFO L226 Difference]: Without dead ends: 92 [2020-08-21 15:03:02,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:03:02,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-08-21 15:03:03,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 76. [2020-08-21 15:03:03,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-21 15:03:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2020-08-21 15:03:03,015 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 33 [2020-08-21 15:03:03,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:03,015 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2020-08-21 15:03:03,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 15:03:03,016 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2020-08-21 15:03:03,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-21 15:03:03,017 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:03,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:03,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:03:03,018 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:03,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:03,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1042158428, now seen corresponding path program 1 times [2020-08-21 15:03:03,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:03,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317703864] [2020-08-21 15:03:03,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:03,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:03,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-21 15:03:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:03,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:03,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317703864] [2020-08-21 15:03:03,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:03,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:03:03,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509238098] [2020-08-21 15:03:03,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:03:03,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:03,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:03:03,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:03:03,125 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 6 states. [2020-08-21 15:03:03,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:03,303 INFO L93 Difference]: Finished difference Result 138 states and 179 transitions. [2020-08-21 15:03:03,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 15:03:03,306 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-21 15:03:03,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:03,307 INFO L225 Difference]: With dead ends: 138 [2020-08-21 15:03:03,307 INFO L226 Difference]: Without dead ends: 89 [2020-08-21 15:03:03,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:03:03,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-08-21 15:03:03,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2020-08-21 15:03:03,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-21 15:03:03,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 108 transitions. [2020-08-21 15:03:03,323 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 108 transitions. Word has length 33 [2020-08-21 15:03:03,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:03,327 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 108 transitions. [2020-08-21 15:03:03,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:03:03,327 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 108 transitions. [2020-08-21 15:03:03,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-21 15:03:03,329 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:03,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:03,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:03:03,331 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:03,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:03,331 INFO L82 PathProgramCache]: Analyzing trace with hash -151257089, now seen corresponding path program 1 times [2020-08-21 15:03:03,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:03,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073271516] [2020-08-21 15:03:03,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:03,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:03,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 15:03:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:03,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073271516] [2020-08-21 15:03:03,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:03,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:03:03,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140327326] [2020-08-21 15:03:03,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:03:03,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:03,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:03:03,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:03:03,415 INFO L87 Difference]: Start difference. First operand 83 states and 108 transitions. Second operand 5 states. [2020-08-21 15:03:03,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:03,530 INFO L93 Difference]: Finished difference Result 124 states and 161 transitions. [2020-08-21 15:03:03,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:03:03,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-08-21 15:03:03,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:03,533 INFO L225 Difference]: With dead ends: 124 [2020-08-21 15:03:03,533 INFO L226 Difference]: Without dead ends: 89 [2020-08-21 15:03:03,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:03:03,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-08-21 15:03:03,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-08-21 15:03:03,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-08-21 15:03:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 114 transitions. [2020-08-21 15:03:03,542 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 114 transitions. Word has length 35 [2020-08-21 15:03:03,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:03,542 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 114 transitions. [2020-08-21 15:03:03,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:03:03,543 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 114 transitions. [2020-08-21 15:03:03,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-21 15:03:03,544 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:03,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:03,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:03:03,545 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:03,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:03,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1172325443, now seen corresponding path program 1 times [2020-08-21 15:03:03,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:03,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711853023] [2020-08-21 15:03:03,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:03,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:03,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 15:03:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:03,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711853023] [2020-08-21 15:03:03,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:03,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 15:03:03,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837709292] [2020-08-21 15:03:03,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 15:03:03,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:03,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 15:03:03,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:03:03,641 INFO L87 Difference]: Start difference. First operand 89 states and 114 transitions. Second operand 7 states. [2020-08-21 15:03:03,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:03,801 INFO L93 Difference]: Finished difference Result 147 states and 187 transitions. [2020-08-21 15:03:03,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 15:03:03,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-08-21 15:03:03,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:03,803 INFO L225 Difference]: With dead ends: 147 [2020-08-21 15:03:03,803 INFO L226 Difference]: Without dead ends: 89 [2020-08-21 15:03:03,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-08-21 15:03:03,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-08-21 15:03:03,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2020-08-21 15:03:03,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-21 15:03:03,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2020-08-21 15:03:03,823 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 35 [2020-08-21 15:03:03,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:03,827 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2020-08-21 15:03:03,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 15:03:03,827 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2020-08-21 15:03:03,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-21 15:03:03,830 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:03,830 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 15:03:03,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:03:03,831 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:03,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:03,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1310821647, now seen corresponding path program 1 times [2020-08-21 15:03:03,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:03,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842581774] [2020-08-21 15:03:03,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:03,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:03,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 15:03:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 15:03:03,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842581774] [2020-08-21 15:03:03,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:03:03,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:03:03,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678030190] [2020-08-21 15:03:03,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:03:03,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:03,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:03:03,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:03:03,998 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand 8 states. [2020-08-21 15:03:04,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:04,288 INFO L93 Difference]: Finished difference Result 107 states and 134 transitions. [2020-08-21 15:03:04,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 15:03:04,289 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-08-21 15:03:04,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:04,290 INFO L225 Difference]: With dead ends: 107 [2020-08-21 15:03:04,290 INFO L226 Difference]: Without dead ends: 105 [2020-08-21 15:03:04,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:03:04,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-08-21 15:03:04,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2020-08-21 15:03:04,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-08-21 15:03:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2020-08-21 15:03:04,300 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 38 [2020-08-21 15:03:04,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:04,301 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2020-08-21 15:03:04,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:03:04,301 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2020-08-21 15:03:04,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-21 15:03:04,304 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:04,304 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 15:03:04,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:03:04,304 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:04,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:04,305 INFO L82 PathProgramCache]: Analyzing trace with hash 888728936, now seen corresponding path program 1 times [2020-08-21 15:03:04,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:04,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408299142] [2020-08-21 15:03:04,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:04,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:04,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 15:03:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:04,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408299142] [2020-08-21 15:03:04,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:03:04,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 15:03:04,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308675364] [2020-08-21 15:03:04,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:03:04,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:04,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:03:04,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:03:04,417 INFO L87 Difference]: Start difference. First operand 93 states and 116 transitions. Second operand 8 states. [2020-08-21 15:03:04,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:04,616 INFO L93 Difference]: Finished difference Result 209 states and 263 transitions. [2020-08-21 15:03:04,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:03:04,617 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-08-21 15:03:04,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:04,620 INFO L225 Difference]: With dead ends: 209 [2020-08-21 15:03:04,621 INFO L226 Difference]: Without dead ends: 136 [2020-08-21 15:03:04,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:03:04,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-21 15:03:04,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 106. [2020-08-21 15:03:04,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-08-21 15:03:04,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 130 transitions. [2020-08-21 15:03:04,642 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 130 transitions. Word has length 40 [2020-08-21 15:03:04,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:04,642 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 130 transitions. [2020-08-21 15:03:04,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:03:04,643 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 130 transitions. [2020-08-21 15:03:04,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-21 15:03:04,647 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:04,648 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:04,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:03:04,648 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:04,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:04,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1526927005, now seen corresponding path program 2 times [2020-08-21 15:03:04,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:04,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503971969] [2020-08-21 15:03:04,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:04,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:04,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 15:03:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:04,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503971969] [2020-08-21 15:03:04,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:03:04,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 15:03:04,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282997641] [2020-08-21 15:03:04,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:03:04,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:04,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:03:04,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:03:04,821 INFO L87 Difference]: Start difference. First operand 106 states and 130 transitions. Second operand 12 states. [2020-08-21 15:03:05,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:05,438 INFO L93 Difference]: Finished difference Result 240 states and 302 transitions. [2020-08-21 15:03:05,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 15:03:05,439 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-08-21 15:03:05,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:05,443 INFO L225 Difference]: With dead ends: 240 [2020-08-21 15:03:05,443 INFO L226 Difference]: Without dead ends: 189 [2020-08-21 15:03:05,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-08-21 15:03:05,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-21 15:03:05,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 127. [2020-08-21 15:03:05,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-21 15:03:05,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 158 transitions. [2020-08-21 15:03:05,461 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 158 transitions. Word has length 45 [2020-08-21 15:03:05,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:05,461 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 158 transitions. [2020-08-21 15:03:05,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:03:05,462 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 158 transitions. [2020-08-21 15:03:05,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-21 15:03:05,466 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:05,466 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:05,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:03:05,466 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:05,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:05,467 INFO L82 PathProgramCache]: Analyzing trace with hash 709278555, now seen corresponding path program 1 times [2020-08-21 15:03:05,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:05,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285672000] [2020-08-21 15:03:05,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:05,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:03:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:05,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 15:03:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:03:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:03:05,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285672000] [2020-08-21 15:03:05,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:03:05,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 15:03:05,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800000300] [2020-08-21 15:03:05,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 15:03:05,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:03:05,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 15:03:05,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:03:05,643 INFO L87 Difference]: Start difference. First operand 127 states and 158 transitions. Second operand 11 states. [2020-08-21 15:03:06,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:03:06,054 INFO L93 Difference]: Finished difference Result 202 states and 254 transitions. [2020-08-21 15:03:06,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:03:06,055 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-08-21 15:03:06,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:03:06,058 INFO L225 Difference]: With dead ends: 202 [2020-08-21 15:03:06,058 INFO L226 Difference]: Without dead ends: 200 [2020-08-21 15:03:06,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-08-21 15:03:06,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-08-21 15:03:06,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 146. [2020-08-21 15:03:06,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-21 15:03:06,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 187 transitions. [2020-08-21 15:03:06,071 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 187 transitions. Word has length 45 [2020-08-21 15:03:06,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:03:06,071 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 187 transitions. [2020-08-21 15:03:06,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 15:03:06,071 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 187 transitions. [2020-08-21 15:03:06,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-21 15:03:06,081 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:03:06,081 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:03:06,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 15:03:06,081 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:03:06,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:03:06,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1410343133, now seen corresponding path program 1 times [2020-08-21 15:03:06,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:03:06,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944852452] [2020-08-21 15:03:06,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:03:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 15:03:06,105 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 15:03:06,106 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 15:03:06,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 15:03:06,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:03:06 BoogieIcfgContainer [2020-08-21 15:03:06,126 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:03:06,128 INFO L168 Benchmark]: Toolchain (without parser) took 5975.61 ms. Allocated memory was 147.8 MB in the beginning and 275.3 MB in the end (delta: 127.4 MB). Free memory was 103.8 MB in the beginning and 114.3 MB in the end (delta: -10.6 MB). Peak memory consumption was 116.8 MB. Max. memory is 7.1 GB. [2020-08-21 15:03:06,128 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 15:03:06,129 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.77 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 103.5 MB in the beginning and 182.1 MB in the end (delta: -78.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-08-21 15:03:06,130 INFO L168 Benchmark]: Boogie Preprocessor took 46.78 ms. Allocated memory is still 203.9 MB. Free memory was 182.1 MB in the beginning and 179.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-08-21 15:03:06,131 INFO L168 Benchmark]: RCFGBuilder took 465.46 ms. Allocated memory is still 203.9 MB. Free memory was 179.0 MB in the beginning and 151.0 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-08-21 15:03:06,131 INFO L168 Benchmark]: TraceAbstraction took 5023.04 ms. Allocated memory was 203.9 MB in the beginning and 275.3 MB in the end (delta: 71.3 MB). Free memory was 151.0 MB in the beginning and 114.3 MB in the end (delta: 36.7 MB). Peak memory consumption was 108.0 MB. Max. memory is 7.1 GB. [2020-08-21 15:03:06,134 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 435.77 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 103.5 MB in the beginning and 182.1 MB in the end (delta: -78.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.78 ms. Allocated memory is still 203.9 MB. Free memory was 182.1 MB in the beginning and 179.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 465.46 ms. Allocated memory is still 203.9 MB. Free memory was 179.0 MB in the beginning and 151.0 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5023.04 ms. Allocated memory was 203.9 MB in the beginning and 275.3 MB in the end (delta: 71.3 MB). Free memory was 151.0 MB in the beginning and 114.3 MB in the end (delta: 36.7 MB). Peak memory consumption was 108.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L74] char A [2 + 2 + 4 +1]; [L75] A[2 + 2 + 4] = 0 [L76] CALL parse_expression_list (A) [L48] int start=0, i=-1, j=-1; [L49] char str2[2]; [L50] COND FALSE !(!str) [L52] i++ [L53] str[i] [L54] case 0: [L69] EXPR str[i] [L69] COND TRUE str[i] != 0 [L52] i++ [L53] str[i] [L54] case 0: [L69] EXPR str[i] [L69] COND TRUE str[i] != 0 [L52] i++ [L53] str[i] [L54] case 0: [L55] EXPR str[start] [L55] (str[start] == ' ') || (str[start] == '\t') [L55] EXPR str[start] [L55] (str[start] == ' ') || (str[start] == '\t') [L55] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L56] EXPR str[start] [L56] COND FALSE !(str[start] == '"') [L57] j = i-1 [L58] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L58] EXPR str[j] [L58] EXPR (str[j] == ' ') || (str[j] == '\t') [L58] EXPR str[j] [L58] EXPR (str[j] == ' ') || (str[j] == '\t') [L58] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L58] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L59] (0 < j) && (str[j] == '"') [L59] EXPR str[j] [L59] (0 < j) && (str[j] == '"') [L59] COND FALSE !((0 < j) && (str[j] == '"')) [L60] COND TRUE start<=j [L61] CALL r_strncpy(str2, str+start, j-start+1) [L30] return strncpy(dest,src,n); [L61] RET r_strncpy(str2, str+start, j-start+1) [L62] CALL __VERIFIER_assert(j - start + 1 < 2) [L3] COND TRUE !(cond) [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.9s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 523 SDtfs, 901 SDslu, 1287 SDs, 0 SdLazy, 1834 SolverSat, 233 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=11, 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, 11 MinimizatonAttempts, 209 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 444 NumberOfCodeBlocks, 444 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 388 ConstructedInterpolants, 0 QuantifiedInterpolants, 45573 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 2/22 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...