/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 -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 0.1.25-86f66a4 [2020-07-07 11:33:08,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:33:08,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:33:08,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:33:08,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:33:08,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:33:08,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:33:08,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:33:08,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:33:08,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:33:08,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:33:08,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:33:08,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:33:08,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:33:08,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:33:08,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:33:08,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:33:08,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:33:08,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:33:08,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:33:08,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:33:08,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:33:08,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:33:08,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:33:08,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:33:08,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:33:08,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:33:08,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:33:08,703 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-07 11:33:08,727 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:33:08,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:33:08,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:33:08,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:33:08,736 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:33:08,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:33:08,736 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:33:08,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:33:08,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:33:08,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:33:08,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:33:08,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:33:08,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:33:08,738 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:33:08,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:33:08,738 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:33:08,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:33:08,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:33:08,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:33:08,739 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:33:08,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:33:08,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:33:08,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:33:08,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:33:08,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:33:08,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:33:08,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:33:08,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:33:08,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:33:08,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:33:09,026 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:33:09,038 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:33:09,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:33:09,043 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:33:09,043 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:33:09,044 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-07-07 11:33:09,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dadaf143/6a26687c4bac43a386dbaed98e2ca38d/FLAG958403cd4 [2020-07-07 11:33:09,620 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:33:09,621 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-07-07 11:33:09,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dadaf143/6a26687c4bac43a386dbaed98e2ca38d/FLAG958403cd4 [2020-07-07 11:33:09,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dadaf143/6a26687c4bac43a386dbaed98e2ca38d [2020-07-07 11:33:09,949 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:33:09,951 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:33:09,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:33:09,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:33:09,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:33:09,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:33:09" (1/1) ... [2020-07-07 11:33:09,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de36573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:09, skipping insertion in model container [2020-07-07 11:33:09,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:33:09" (1/1) ... [2020-07-07 11:33:09,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:33:09,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:33:10,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:33:10,192 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:33:10,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:33:10,244 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:33:10,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:10 WrapperNode [2020-07-07 11:33:10,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:33:10,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:33:10,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:33:10,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:33:10,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:10" (1/1) ... [2020-07-07 11:33:10,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:10" (1/1) ... [2020-07-07 11:33:10,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:10" (1/1) ... [2020-07-07 11:33:10,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:10" (1/1) ... [2020-07-07 11:33:10,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:10" (1/1) ... [2020-07-07 11:33:10,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:10" (1/1) ... [2020-07-07 11:33:10,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:10" (1/1) ... [2020-07-07 11:33:10,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:33:10,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:33:10,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:33:10,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:33:10,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-07 11:33:10,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:33:10,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:33:10,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 11:33:10,448 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-07-07 11:33:10,448 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-07-07 11:33:10,448 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:33:10,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:33:10,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:33:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-07-07 11:33:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-07-07 11:33:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-07-07 11:33:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-07-07 11:33:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-07-07 11:33:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-07-07 11:33:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-07-07 11:33:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-07-07 11:33:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-07 11:33:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-07-07 11:33:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-07-07 11:33:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-07-07 11:33:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-07-07 11:33:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-07 11:33:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-07-07 11:33:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-07-07 11:33:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-07-07 11:33:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-07-07 11:33:10,451 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-07-07 11:33:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-07-07 11:33:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-07-07 11:33:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-07-07 11:33:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-07-07 11:33:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-07-07 11:33:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-07-07 11:33:10,452 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-07-07 11:33:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 11:33:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 11:33:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 11:33:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 11:33:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:33:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:33:10,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:33:10,858 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:33:10,859 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-07 11:33:10,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:33:10 BoogieIcfgContainer [2020-07-07 11:33:10,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:33:10,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:33:10,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:33:10,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:33:10,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:33:09" (1/3) ... [2020-07-07 11:33:10,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2801b15b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:33:10, skipping insertion in model container [2020-07-07 11:33:10,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:10" (2/3) ... [2020-07-07 11:33:10,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2801b15b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:33:10, skipping insertion in model container [2020-07-07 11:33:10,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:33:10" (3/3) ... [2020-07-07 11:33:10,878 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-07-07 11:33:10,892 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:33:10,901 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:33:10,915 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:33:10,952 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:33:10,953 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:33:10,953 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:33:10,954 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:33:10,954 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:33:10,954 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:33:10,954 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:33:10,954 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:33:10,986 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-07-07 11:33:10,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-07 11:33:10,993 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:10,994 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] [2020-07-07 11:33:10,994 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:10,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:10,999 INFO L82 PathProgramCache]: Analyzing trace with hash -2018987797, now seen corresponding path program 1 times [2020-07-07 11:33:11,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:11,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960008219] [2020-07-07 11:33:11,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:11,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:11,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960008219] [2020-07-07 11:33:11,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:11,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:33:11,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010652746] [2020-07-07 11:33:11,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:33:11,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:11,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:33:11,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:33:11,267 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2020-07-07 11:33:11,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:11,427 INFO L93 Difference]: Finished difference Result 93 states and 123 transitions. [2020-07-07 11:33:11,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:33:11,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-07-07 11:33:11,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:11,439 INFO L225 Difference]: With dead ends: 93 [2020-07-07 11:33:11,440 INFO L226 Difference]: Without dead ends: 43 [2020-07-07 11:33:11,444 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 [2020-07-07 11:33:11,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-07 11:33:11,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-07-07 11:33:11,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-07 11:33:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2020-07-07 11:33:11,495 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2020-07-07 11:33:11,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:11,496 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2020-07-07 11:33:11,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:33:11,497 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2020-07-07 11:33:11,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-07 11:33:11,498 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:11,499 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] [2020-07-07 11:33:11,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:33:11,500 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:11,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:11,500 INFO L82 PathProgramCache]: Analyzing trace with hash -171780126, now seen corresponding path program 1 times [2020-07-07 11:33:11,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:11,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343109992] [2020-07-07 11:33:11,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:11,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343109992] [2020-07-07 11:33:11,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:11,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:33:11,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691304044] [2020-07-07 11:33:11,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:33:11,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:11,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:33:11,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:33:11,643 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2020-07-07 11:33:11,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:11,792 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2020-07-07 11:33:11,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:33:11,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-07-07 11:33:11,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:11,794 INFO L225 Difference]: With dead ends: 78 [2020-07-07 11:33:11,794 INFO L226 Difference]: Without dead ends: 44 [2020-07-07 11:33:11,796 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 [2020-07-07 11:33:11,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-07 11:33:11,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-07 11:33:11,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-07 11:33:11,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-07 11:33:11,805 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2020-07-07 11:33:11,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:11,806 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-07 11:33:11,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:33:11,806 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-07 11:33:11,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-07 11:33:11,807 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:11,807 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] [2020-07-07 11:33:11,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:33:11,808 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:11,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:11,809 INFO L82 PathProgramCache]: Analyzing trace with hash 250921700, now seen corresponding path program 1 times [2020-07-07 11:33:11,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:11,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986494963] [2020-07-07 11:33:11,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:12,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:12,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986494963] [2020-07-07 11:33:12,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:12,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 11:33:12,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371398569] [2020-07-07 11:33:12,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 11:33:12,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:12,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 11:33:12,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-07-07 11:33:12,005 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 9 states. [2020-07-07 11:33:12,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:12,348 INFO L93 Difference]: Finished difference Result 140 states and 187 transitions. [2020-07-07 11:33:12,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 11:33:12,349 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-07-07 11:33:12,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:12,353 INFO L225 Difference]: With dead ends: 140 [2020-07-07 11:33:12,353 INFO L226 Difference]: Without dead ends: 91 [2020-07-07 11:33:12,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-07-07 11:33:12,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-07 11:33:12,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 66. [2020-07-07 11:33:12,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-07-07 11:33:12,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2020-07-07 11:33:12,371 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 33 [2020-07-07 11:33:12,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:12,371 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2020-07-07 11:33:12,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 11:33:12,372 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2020-07-07 11:33:12,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-07 11:33:12,373 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:12,373 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] [2020-07-07 11:33:12,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:33:12,373 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:12,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:12,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1743223006, now seen corresponding path program 1 times [2020-07-07 11:33:12,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:12,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396823196] [2020-07-07 11:33:12,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:12,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:12,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396823196] [2020-07-07 11:33:12,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:12,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 11:33:12,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452295517] [2020-07-07 11:33:12,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 11:33:12,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:12,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 11:33:12,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:33:12,470 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand 7 states. [2020-07-07 11:33:12,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:12,653 INFO L93 Difference]: Finished difference Result 136 states and 180 transitions. [2020-07-07 11:33:12,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:33:12,654 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-07-07 11:33:12,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:12,655 INFO L225 Difference]: With dead ends: 136 [2020-07-07 11:33:12,656 INFO L226 Difference]: Without dead ends: 92 [2020-07-07 11:33:12,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:33:12,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-07-07 11:33:12,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 76. [2020-07-07 11:33:12,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-07 11:33:12,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2020-07-07 11:33:12,669 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 33 [2020-07-07 11:33:12,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:12,669 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2020-07-07 11:33:12,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 11:33:12,670 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2020-07-07 11:33:12,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-07 11:33:12,671 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:12,671 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] [2020-07-07 11:33:12,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 11:33:12,672 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:12,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:12,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1042158428, now seen corresponding path program 1 times [2020-07-07 11:33:12,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:12,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249959557] [2020-07-07 11:33:12,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:12,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249959557] [2020-07-07 11:33:12,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:12,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 11:33:12,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128490334] [2020-07-07 11:33:12,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:33:12,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:12,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:33:12,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:33:12,768 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 6 states. [2020-07-07 11:33:12,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:12,961 INFO L93 Difference]: Finished difference Result 138 states and 179 transitions. [2020-07-07 11:33:12,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:33:12,962 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-07-07 11:33:12,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:12,963 INFO L225 Difference]: With dead ends: 138 [2020-07-07 11:33:12,963 INFO L226 Difference]: Without dead ends: 89 [2020-07-07 11:33:12,964 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 [2020-07-07 11:33:12,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-07 11:33:12,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2020-07-07 11:33:12,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-07 11:33:12,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 108 transitions. [2020-07-07 11:33:12,972 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 108 transitions. Word has length 33 [2020-07-07 11:33:12,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:12,973 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 108 transitions. [2020-07-07 11:33:12,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:33:12,973 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 108 transitions. [2020-07-07 11:33:12,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-07 11:33:12,974 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:12,975 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] [2020-07-07 11:33:12,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 11:33:12,975 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:12,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:12,976 INFO L82 PathProgramCache]: Analyzing trace with hash -151257089, now seen corresponding path program 1 times [2020-07-07 11:33:12,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:12,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2970027] [2020-07-07 11:33:12,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:13,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:13,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2970027] [2020-07-07 11:33:13,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:13,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:33:13,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576571015] [2020-07-07 11:33:13,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:33:13,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:13,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:33:13,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:33:13,024 INFO L87 Difference]: Start difference. First operand 83 states and 108 transitions. Second operand 5 states. [2020-07-07 11:33:13,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:13,109 INFO L93 Difference]: Finished difference Result 124 states and 161 transitions. [2020-07-07 11:33:13,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:33:13,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-07-07 11:33:13,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:13,110 INFO L225 Difference]: With dead ends: 124 [2020-07-07 11:33:13,110 INFO L226 Difference]: Without dead ends: 89 [2020-07-07 11:33:13,111 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 [2020-07-07 11:33:13,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-07 11:33:13,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-07-07 11:33:13,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-07-07 11:33:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 114 transitions. [2020-07-07 11:33:13,119 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 114 transitions. Word has length 35 [2020-07-07 11:33:13,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:13,119 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 114 transitions. [2020-07-07 11:33:13,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:33:13,120 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 114 transitions. [2020-07-07 11:33:13,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-07 11:33:13,121 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:13,121 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] [2020-07-07 11:33:13,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 11:33:13,121 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:13,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:13,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1172325443, now seen corresponding path program 1 times [2020-07-07 11:33:13,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:13,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930004322] [2020-07-07 11:33:13,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:13,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:13,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930004322] [2020-07-07 11:33:13,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:13,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 11:33:13,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805280828] [2020-07-07 11:33:13,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 11:33:13,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:13,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 11:33:13,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:33:13,196 INFO L87 Difference]: Start difference. First operand 89 states and 114 transitions. Second operand 7 states. [2020-07-07 11:33:13,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:13,350 INFO L93 Difference]: Finished difference Result 146 states and 185 transitions. [2020-07-07 11:33:13,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:33:13,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-07-07 11:33:13,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:13,353 INFO L225 Difference]: With dead ends: 146 [2020-07-07 11:33:13,353 INFO L226 Difference]: Without dead ends: 88 [2020-07-07 11:33:13,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:33:13,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-07-07 11:33:13,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-07-07 11:33:13,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-07-07 11:33:13,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2020-07-07 11:33:13,369 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 35 [2020-07-07 11:33:13,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:13,371 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2020-07-07 11:33:13,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 11:33:13,371 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2020-07-07 11:33:13,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-07 11:33:13,372 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:13,374 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] [2020-07-07 11:33:13,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 11:33:13,375 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:13,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:13,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1310821647, now seen corresponding path program 1 times [2020-07-07 11:33:13,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:13,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458003427] [2020-07-07 11:33:13,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-07 11:33:13,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458003427] [2020-07-07 11:33:13,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:13,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 11:33:13,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554308761] [2020-07-07 11:33:13,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 11:33:13,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:13,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 11:33:13,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:33:13,517 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand 8 states. [2020-07-07 11:33:13,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:13,767 INFO L93 Difference]: Finished difference Result 106 states and 133 transitions. [2020-07-07 11:33:13,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 11:33:13,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-07-07 11:33:13,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:13,771 INFO L225 Difference]: With dead ends: 106 [2020-07-07 11:33:13,772 INFO L226 Difference]: Without dead ends: 104 [2020-07-07 11:33:13,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-07-07 11:33:13,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-07-07 11:33:13,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 92. [2020-07-07 11:33:13,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-07-07 11:33:13,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 115 transitions. [2020-07-07 11:33:13,780 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 115 transitions. Word has length 38 [2020-07-07 11:33:13,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:13,780 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 115 transitions. [2020-07-07 11:33:13,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 11:33:13,781 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 115 transitions. [2020-07-07 11:33:13,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-07 11:33:13,783 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:13,783 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] [2020-07-07 11:33:13,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 11:33:13,783 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:13,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:13,784 INFO L82 PathProgramCache]: Analyzing trace with hash 888728936, now seen corresponding path program 1 times [2020-07-07 11:33:13,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:13,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279342385] [2020-07-07 11:33:13,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:13,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:13,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279342385] [2020-07-07 11:33:13,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572701171] [2020-07-07 11:33:13,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:13,942 INFO L264 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-07 11:33:13,951 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:13,986 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:13,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:13,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:13,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2020-07-07 11:33:13,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327463802] [2020-07-07 11:33:13,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 11:33:13,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:13,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 11:33:13,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:33:13,995 INFO L87 Difference]: Start difference. First operand 92 states and 115 transitions. Second operand 8 states. [2020-07-07 11:33:14,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:14,191 INFO L93 Difference]: Finished difference Result 208 states and 263 transitions. [2020-07-07 11:33:14,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 11:33:14,192 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-07-07 11:33:14,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:14,195 INFO L225 Difference]: With dead ends: 208 [2020-07-07 11:33:14,195 INFO L226 Difference]: Without dead ends: 136 [2020-07-07 11:33:14,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-07-07 11:33:14,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-07 11:33:14,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 106. [2020-07-07 11:33:14,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-07-07 11:33:14,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 130 transitions. [2020-07-07 11:33:14,204 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 130 transitions. Word has length 40 [2020-07-07 11:33:14,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:14,204 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 130 transitions. [2020-07-07 11:33:14,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 11:33:14,204 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 130 transitions. [2020-07-07 11:33:14,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-07 11:33:14,206 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:14,206 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] [2020-07-07 11:33:14,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-07-07 11:33:14,420 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:14,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:14,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1526927005, now seen corresponding path program 2 times [2020-07-07 11:33:14,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:14,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044668447] [2020-07-07 11:33:14,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:14,582 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:14,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044668447] [2020-07-07 11:33:14,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060725296] [2020-07-07 11:33:14,583 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:14,665 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:33:14,665 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:14,667 INFO L264 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-07 11:33:14,675 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:14,834 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:14,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:14,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2020-07-07 11:33:14,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140354081] [2020-07-07 11:33:14,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-07 11:33:14,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:14,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-07 11:33:14,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2020-07-07 11:33:14,838 INFO L87 Difference]: Start difference. First operand 106 states and 130 transitions. Second operand 19 states. [2020-07-07 11:33:15,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:15,466 INFO L93 Difference]: Finished difference Result 240 states and 302 transitions. [2020-07-07 11:33:15,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 11:33:15,466 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-07-07 11:33:15,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:15,468 INFO L225 Difference]: With dead ends: 240 [2020-07-07 11:33:15,468 INFO L226 Difference]: Without dead ends: 189 [2020-07-07 11:33:15,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2020-07-07 11:33:15,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-07-07 11:33:15,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 127. [2020-07-07 11:33:15,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-07-07 11:33:15,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 158 transitions. [2020-07-07 11:33:15,478 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 158 transitions. Word has length 45 [2020-07-07 11:33:15,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:15,478 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 158 transitions. [2020-07-07 11:33:15,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-07 11:33:15,479 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 158 transitions. [2020-07-07 11:33:15,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-07 11:33:15,480 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:15,480 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] [2020-07-07 11:33:15,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-07 11:33:15,688 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:15,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:15,689 INFO L82 PathProgramCache]: Analyzing trace with hash 709278555, now seen corresponding path program 1 times [2020-07-07 11:33:15,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:15,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628446581] [2020-07-07 11:33:15,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:15,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628446581] [2020-07-07 11:33:15,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594108457] [2020-07-07 11:33:15,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:15,934 INFO L264 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-07 11:33:15,937 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:16,070 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:16,072 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:16,106 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:16,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:16,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2020-07-07 11:33:16,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097385994] [2020-07-07 11:33:16,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-07 11:33:16,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:16,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-07 11:33:16,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-07-07 11:33:16,108 INFO L87 Difference]: Start difference. First operand 127 states and 158 transitions. Second operand 19 states. [2020-07-07 11:33:16,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:16,698 INFO L93 Difference]: Finished difference Result 212 states and 267 transitions. [2020-07-07 11:33:16,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 11:33:16,698 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-07-07 11:33:16,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:16,701 INFO L225 Difference]: With dead ends: 212 [2020-07-07 11:33:16,701 INFO L226 Difference]: Without dead ends: 210 [2020-07-07 11:33:16,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2020-07-07 11:33:16,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-07-07 11:33:16,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 146. [2020-07-07 11:33:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-07-07 11:33:16,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 187 transitions. [2020-07-07 11:33:16,712 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 187 transitions. Word has length 45 [2020-07-07 11:33:16,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:16,713 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 187 transitions. [2020-07-07 11:33:16,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-07 11:33:16,713 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 187 transitions. [2020-07-07 11:33:16,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-07 11:33:16,714 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:16,714 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] [2020-07-07 11:33:16,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-07-07 11:33:16,918 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:16,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:16,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1410343133, now seen corresponding path program 1 times [2020-07-07 11:33:16,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:16,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864397202] [2020-07-07 11:33:16,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:33:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:33:16,979 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 11:33:16,980 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 11:33:16,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 11:33:17,013 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-07 11:33:17,015 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-07 11:33:17,016 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-07 11:33:17,016 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-07 11:33:17,017 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-07 11:33:17,017 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-07 11:33:17,018 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-07 11:33:17,019 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-07 11:33:17,019 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-07 11:33:17,020 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-07 11:33:17,020 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-07 11:33:17,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:33:17 BoogieIcfgContainer [2020-07-07 11:33:17,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:33:17,035 INFO L168 Benchmark]: Toolchain (without parser) took 7083.67 ms. Allocated memory was 145.8 MB in the beginning and 279.4 MB in the end (delta: 133.7 MB). Free memory was 103.7 MB in the beginning and 133.1 MB in the end (delta: -29.4 MB). Peak memory consumption was 104.3 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:17,036 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-07 11:33:17,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.11 ms. Allocated memory is still 145.8 MB. Free memory was 103.5 MB in the beginning and 91.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:17,037 INFO L168 Benchmark]: Boogie Preprocessor took 137.06 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 91.6 MB in the beginning and 179.0 MB in the end (delta: -87.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:17,038 INFO L168 Benchmark]: RCFGBuilder took 484.38 ms. Allocated memory is still 202.4 MB. Free memory was 179.0 MB in the beginning and 151.3 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:17,039 INFO L168 Benchmark]: TraceAbstraction took 6164.05 ms. Allocated memory was 202.4 MB in the beginning and 279.4 MB in the end (delta: 77.1 MB). Free memory was 151.3 MB in the beginning and 133.1 MB in the end (delta: 18.2 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:17,043 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 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 293.11 ms. Allocated memory is still 145.8 MB. Free memory was 103.5 MB in the beginning and 91.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.06 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 91.6 MB in the beginning and 179.0 MB in the end (delta: -87.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 484.38 ms. Allocated memory is still 202.4 MB. Free memory was 179.0 MB in the beginning and 151.3 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6164.05 ms. Allocated memory was 202.4 MB in the beginning and 279.4 MB in the end (delta: 77.1 MB). Free memory was 151.3 MB in the beginning and 133.1 MB in the end (delta: 18.2 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement * 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 VAL [A={4:0}] [L76] CALL parse_expression_list (A) VAL [str={4:0}] [L48] int start=0, i=-1, j=-1; [L49] char str2[2]; VAL [i=-1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}] [L50] COND FALSE !(!str) VAL [i=-1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}] [L52] i++ [L53] str[i] [L54] case 0: VAL [i=0, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=-1] [L69] EXPR str[i] VAL [i=0, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=-1] [L69] COND TRUE str[i] != 0 [L52] i++ [L53] str[i] [L54] case 0: VAL [i=1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=-2] [L69] EXPR str[i] VAL [i=1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=-2] [L69] COND TRUE str[i] != 0 [L52] i++ [L53] str[i] [L54] case 0: VAL [i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L55] EXPR str[start] [L55] (str[start] == ' ') || (str[start] == '\t') [L55] EXPR str[start] [L55] (str[start] == ' ') || (str[start] == '\t') VAL [(str[start] == ' ') || (str[start] == '\t')=0, i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[start]=-1, str[start]=-1] [L55] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L56] EXPR str[start] VAL [i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[start]=-1] [L56] COND FALSE !(str[start] == '"') [L57] j = i-1 VAL [i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [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') VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=1, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=-2, str[j]=-2] [L58] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=0, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=-2, str[j]=-2] [L58] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L59] (0 < j) && (str[j] == '"') [L59] EXPR str[j] [L59] (0 < j) && (str[j] == '"') VAL [(0 < j) && (str[j] == '"')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=-2] [L59] COND FALSE !((0 < j) && (str[j] == '"')) [L60] COND TRUE start<=j VAL [i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L61] CALL r_strncpy(str2, str+start, j-start+1) VAL [\old(n)=2, dest={3:0}, src={4:0}] [L30] return strncpy(dest,src,n); [L61] RET r_strncpy(str2, str+start, j-start+1) VAL [i=2, j=1, r_strncpy(str2, str+start, j-start+1)={35:37}, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L62] CALL __VERIFIER_assert(j - start + 1 < 2) VAL [\old(cond)=0] [L3] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.0s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 535 SDtfs, 998 SDslu, 1567 SDs, 0 SdLazy, 2170 SolverSat, 258 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 279 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1.2s 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, 219 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 574 NumberOfCodeBlocks, 574 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 515 ConstructedInterpolants, 0 QuantifiedInterpolants, 69039 SizeOfPredicates, 8 NumberOfNonLiveVariables, 482 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 2/42 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...