/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -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-d623d84 [2020-07-21 14:01:59,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 14:01:59,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 14:01:59,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 14:01:59,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 14:01:59,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 14:01:59,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 14:01:59,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 14:01:59,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 14:01:59,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 14:01:59,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 14:01:59,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 14:01:59,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 14:01:59,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 14:01:59,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 14:01:59,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 14:01:59,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 14:01:59,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 14:01:59,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 14:01:59,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 14:01:59,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 14:01:59,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 14:01:59,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 14:01:59,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 14:01:59,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 14:01:59,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 14:01:59,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 14:01:59,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 14:01:59,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 14:01:59,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-21 14:01:59,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 14:01:59,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 14:01:59,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 14:01:59,725 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 [2020-07-21 14:01:59,754 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 14:01:59,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 14:01:59,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 14:01:59,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 14:01:59,758 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 14:01:59,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 14:01:59,758 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 14:01:59,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 14:01:59,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 14:01:59,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 14:01:59,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 14:01:59,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 14:01:59,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 14:01:59,761 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 14:01:59,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 14:01:59,761 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 14:01:59,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 14:01:59,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 14:01:59,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 14:01:59,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 14:01:59,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 14:01:59,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 14:01:59,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 14:01:59,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 14:01:59,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 14:01:59,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 14:01:59,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:01:59,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 14:01:59,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 14:01:59,764 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 14:02:00,061 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 14:02:00,077 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 14:02:00,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 14:02:00,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 14:02:00,082 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 14:02:00,083 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-07-21 14:02:00,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d409f62bf/f4d2386cef43451a807636f2527ae1ed/FLAG7ef1e9bf5 [2020-07-21 14:02:00,736 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 14:02:00,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-07-21 14:02:00,747 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d409f62bf/f4d2386cef43451a807636f2527ae1ed/FLAG7ef1e9bf5 [2020-07-21 14:02:01,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d409f62bf/f4d2386cef43451a807636f2527ae1ed [2020-07-21 14:02:01,096 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 14:02:01,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 14:02:01,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 14:02:01,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 14:02:01,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 14:02:01,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:02:01" (1/1) ... [2020-07-21 14:02:01,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea26d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:01, skipping insertion in model container [2020-07-21 14:02:01,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:02:01" (1/1) ... [2020-07-21 14:02:01,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 14:02:01,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 14:02:01,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:02:01,330 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 14:02:01,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:02:01,479 INFO L208 MainTranslator]: Completed translation [2020-07-21 14:02:01,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:01 WrapperNode [2020-07-21 14:02:01,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 14:02:01,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 14:02:01,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 14:02:01,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 14:02:01,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:01" (1/1) ... [2020-07-21 14:02:01,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:01" (1/1) ... [2020-07-21 14:02:01,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:01" (1/1) ... [2020-07-21 14:02:01,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:01" (1/1) ... [2020-07-21 14:02:01,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:01" (1/1) ... [2020-07-21 14:02:01,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:01" (1/1) ... [2020-07-21 14:02:01,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:01" (1/1) ... [2020-07-21 14:02:01,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 14:02:01,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 14:02:01,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 14:02:01,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 14:02:01,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:01" (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 [2020-07-21 14:02:01,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 14:02:01,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 14:02:01,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 14:02:01,606 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-07-21 14:02:01,607 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-07-21 14:02:01,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 14:02:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 14:02:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 14:02:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-07-21 14:02:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-07-21 14:02:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-07-21 14:02:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-07-21 14:02:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-07-21 14:02:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-07-21 14:02:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-07-21 14:02:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-07-21 14:02:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-21 14:02:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-07-21 14:02:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-07-21 14:02:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-07-21 14:02:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-07-21 14:02:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-21 14:02:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-07-21 14:02:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-07-21 14:02:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-07-21 14:02:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-07-21 14:02:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-07-21 14:02:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-07-21 14:02:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-07-21 14:02:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-07-21 14:02:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-07-21 14:02:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-07-21 14:02:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-07-21 14:02:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-07-21 14:02:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 14:02:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 14:02:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 14:02:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 14:02:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 14:02:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 14:02:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 14:02:02,061 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 14:02:02,062 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-21 14:02:02,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:02:02 BoogieIcfgContainer [2020-07-21 14:02:02,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 14:02:02,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 14:02:02,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 14:02:02,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 14:02:02,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:02:01" (1/3) ... [2020-07-21 14:02:02,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26988e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:02:02, skipping insertion in model container [2020-07-21 14:02:02,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:01" (2/3) ... [2020-07-21 14:02:02,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26988e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:02:02, skipping insertion in model container [2020-07-21 14:02:02,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:02:02" (3/3) ... [2020-07-21 14:02:02,080 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-07-21 14:02:02,090 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 14:02:02,100 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 14:02:02,112 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 14:02:02,134 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 14:02:02,134 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 14:02:02,134 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 14:02:02,134 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 14:02:02,135 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 14:02:02,135 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 14:02:02,135 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 14:02:02,135 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 14:02:02,153 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-07-21 14:02:02,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-21 14:02:02,161 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:02,162 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] [2020-07-21 14:02:02,162 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:02,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:02,168 INFO L82 PathProgramCache]: Analyzing trace with hash -2018987797, now seen corresponding path program 1 times [2020-07-21 14:02:02,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:02,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536598620] [2020-07-21 14:02:02,177 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:02,332 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:02,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:02,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 14:02:02,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:02,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:02,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:02:02,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536598620] [2020-07-21 14:02:02,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:02:02,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 14:02:02,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068256833] [2020-07-21 14:02:02,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 14:02:02,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:02,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 14:02:02,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 14:02:02,408 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2020-07-21 14:02:02,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:02,445 INFO L93 Difference]: Finished difference Result 93 states and 123 transitions. [2020-07-21 14:02:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 14:02:02,447 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2020-07-21 14:02:02,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:02,462 INFO L225 Difference]: With dead ends: 93 [2020-07-21 14:02:02,462 INFO L226 Difference]: Without dead ends: 43 [2020-07-21 14:02:02,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 14:02:02,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-21 14:02:02,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-07-21 14:02:02,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-21 14:02:02,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2020-07-21 14:02:02,534 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2020-07-21 14:02:02,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:02,534 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2020-07-21 14:02:02,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 14:02:02,535 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2020-07-21 14:02:02,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-21 14:02:02,539 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:02,540 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] [2020-07-21 14:02:02,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:02,755 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:02,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:02,756 INFO L82 PathProgramCache]: Analyzing trace with hash -171780126, now seen corresponding path program 1 times [2020-07-21 14:02:02,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:02,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093877620] [2020-07-21 14:02:02,757 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:02,868 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:02,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:02,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 14:02:02,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:02,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:02,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:02:02,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093877620] [2020-07-21 14:02:02,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:02:02,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:02:02,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761730225] [2020-07-21 14:02:02,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:02:02,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:02,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:02:02,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:02:02,905 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 3 states. [2020-07-21 14:02:02,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:02,927 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2020-07-21 14:02:02,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:02:02,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-07-21 14:02:02,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:02,929 INFO L225 Difference]: With dead ends: 78 [2020-07-21 14:02:02,930 INFO L226 Difference]: Without dead ends: 44 [2020-07-21 14:02:02,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:02:02,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-21 14:02:02,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-21 14:02:02,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-21 14:02:02,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-21 14:02:02,940 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2020-07-21 14:02:02,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:02,941 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-21 14:02:02,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:02:02,941 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-21 14:02:02,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-21 14:02:02,943 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:02,943 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] [2020-07-21 14:02:03,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:03,174 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:03,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:03,175 INFO L82 PathProgramCache]: Analyzing trace with hash 250921700, now seen corresponding path program 1 times [2020-07-21 14:02:03,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:03,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834713972] [2020-07-21 14:02:03,176 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:03,290 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:03,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:03,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 14:02:03,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:03,345 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:02:03,375 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:02:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:03,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:02:03,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834713972] [2020-07-21 14:02:03,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:02:03,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 14:02:03,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972673199] [2020-07-21 14:02:03,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 14:02:03,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:03,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 14:02:03,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 14:02:03,398 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 5 states. [2020-07-21 14:02:03,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:03,535 INFO L93 Difference]: Finished difference Result 102 states and 130 transitions. [2020-07-21 14:02:03,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 14:02:03,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-07-21 14:02:03,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:03,538 INFO L225 Difference]: With dead ends: 102 [2020-07-21 14:02:03,539 INFO L226 Difference]: Without dead ends: 67 [2020-07-21 14:02:03,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 14:02:03,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-21 14:02:03,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 48. [2020-07-21 14:02:03,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-21 14:02:03,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2020-07-21 14:02:03,553 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 33 [2020-07-21 14:02:03,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:03,553 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2020-07-21 14:02:03,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 14:02:03,554 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2020-07-21 14:02:03,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-21 14:02:03,555 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:03,555 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] [2020-07-21 14:02:03,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:03,771 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:03,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:03,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1210151716, now seen corresponding path program 1 times [2020-07-21 14:02:03,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:03,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130609638] [2020-07-21 14:02:03,774 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:03,842 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:03,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:03,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 17 conjunts are in the unsatisfiable core [2020-07-21 14:02:03,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:03,882 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:02:03,918 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:02:03,983 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 14:02:03,985 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 14:02:03,989 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 14:02:03,990 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 14:02:03,990 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-07-21 14:02:04,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:04,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:02:04,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130609638] [2020-07-21 14:02:04,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:02:04,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 14:02:04,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919063279] [2020-07-21 14:02:04,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 14:02:04,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:04,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 14:02:04,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-21 14:02:04,010 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 8 states. [2020-07-21 14:02:04,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:04,227 INFO L93 Difference]: Finished difference Result 115 states and 144 transitions. [2020-07-21 14:02:04,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 14:02:04,228 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-07-21 14:02:04,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:04,231 INFO L225 Difference]: With dead ends: 115 [2020-07-21 14:02:04,231 INFO L226 Difference]: Without dead ends: 76 [2020-07-21 14:02:04,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-07-21 14:02:04,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-21 14:02:04,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 55. [2020-07-21 14:02:04,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-21 14:02:04,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2020-07-21 14:02:04,244 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 33 [2020-07-21 14:02:04,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:04,245 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2020-07-21 14:02:04,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 14:02:04,245 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2020-07-21 14:02:04,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-21 14:02:04,247 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:04,247 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] [2020-07-21 14:02:04,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:04,461 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:04,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:04,463 INFO L82 PathProgramCache]: Analyzing trace with hash -783992990, now seen corresponding path program 1 times [2020-07-21 14:02:04,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:04,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188244559] [2020-07-21 14:02:04,464 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:04,540 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:04,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:04,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 14:02:04,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:04,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:04,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:02:04,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188244559] [2020-07-21 14:02:04,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:02:04,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 14:02:04,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038794632] [2020-07-21 14:02:04,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 14:02:04,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:04,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 14:02:04,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 14:02:04,592 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand 5 states. [2020-07-21 14:02:04,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:04,725 INFO L93 Difference]: Finished difference Result 130 states and 163 transitions. [2020-07-21 14:02:04,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 14:02:04,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-07-21 14:02:04,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:04,727 INFO L225 Difference]: With dead ends: 130 [2020-07-21 14:02:04,727 INFO L226 Difference]: Without dead ends: 66 [2020-07-21 14:02:04,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-21 14:02:04,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-21 14:02:04,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 50. [2020-07-21 14:02:04,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-21 14:02:04,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2020-07-21 14:02:04,735 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 33 [2020-07-21 14:02:04,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:04,736 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2020-07-21 14:02:04,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 14:02:04,736 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-07-21 14:02:04,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 14:02:04,737 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:04,737 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] [2020-07-21 14:02:04,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:04,953 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:04,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:04,953 INFO L82 PathProgramCache]: Analyzing trace with hash -731835505, now seen corresponding path program 1 times [2020-07-21 14:02:04,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:04,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095551461] [2020-07-21 14:02:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:05,032 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:05,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:05,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 14:02:05,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:05,069 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:02:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 14:02:05,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:02:05,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095551461] [2020-07-21 14:02:05,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:02:05,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 14:02:05,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581188302] [2020-07-21 14:02:05,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 14:02:05,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:05,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 14:02:05,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-07-21 14:02:05,088 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 6 states. [2020-07-21 14:02:05,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:05,209 INFO L93 Difference]: Finished difference Result 146 states and 185 transitions. [2020-07-21 14:02:05,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 14:02:05,210 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-07-21 14:02:05,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:05,211 INFO L225 Difference]: With dead ends: 146 [2020-07-21 14:02:05,211 INFO L226 Difference]: Without dead ends: 102 [2020-07-21 14:02:05,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-07-21 14:02:05,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-07-21 14:02:05,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 72. [2020-07-21 14:02:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-07-21 14:02:05,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2020-07-21 14:02:05,223 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 38 [2020-07-21 14:02:05,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:05,223 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2020-07-21 14:02:05,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 14:02:05,224 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2020-07-21 14:02:05,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 14:02:05,225 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:05,225 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] [2020-07-21 14:02:05,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:05,435 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:05,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:05,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1568987085, now seen corresponding path program 1 times [2020-07-21 14:02:05,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:05,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608595267] [2020-07-21 14:02:05,437 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:05,500 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:05,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:05,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 14:02:05,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:05,554 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:02:05,578 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:02:05,582 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:02:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 14:02:05,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:02:05,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608595267] [2020-07-21 14:02:05,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:02:05,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 14:02:05,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228103835] [2020-07-21 14:02:05,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 14:02:05,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:05,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 14:02:05,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 14:02:05,607 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand 7 states. [2020-07-21 14:02:05,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:05,782 INFO L93 Difference]: Finished difference Result 104 states and 130 transitions. [2020-07-21 14:02:05,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 14:02:05,783 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-07-21 14:02:05,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:05,787 INFO L225 Difference]: With dead ends: 104 [2020-07-21 14:02:05,788 INFO L226 Difference]: Without dead ends: 102 [2020-07-21 14:02:05,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-21 14:02:05,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-07-21 14:02:05,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 90. [2020-07-21 14:02:05,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-07-21 14:02:05,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 112 transitions. [2020-07-21 14:02:05,818 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 112 transitions. Word has length 38 [2020-07-21 14:02:05,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:05,818 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 112 transitions. [2020-07-21 14:02:05,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 14:02:05,819 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 112 transitions. [2020-07-21 14:02:05,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-21 14:02:05,824 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:05,824 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] [2020-07-21 14:02:06,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:06,026 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:06,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:06,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1909797290, now seen corresponding path program 1 times [2020-07-21 14:02:06,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:06,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389923359] [2020-07-21 14:02:06,028 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:06,127 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:06,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:06,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 14:02:06,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:06,153 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:02:06,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 14:02:06,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:02:06,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389923359] [2020-07-21 14:02:06,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:02:06,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 14:02:06,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734408750] [2020-07-21 14:02:06,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 14:02:06,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:06,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 14:02:06,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 14:02:06,171 INFO L87 Difference]: Start difference. First operand 90 states and 112 transitions. Second operand 4 states. [2020-07-21 14:02:06,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:06,201 INFO L93 Difference]: Finished difference Result 135 states and 169 transitions. [2020-07-21 14:02:06,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 14:02:06,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-07-21 14:02:06,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:06,210 INFO L225 Difference]: With dead ends: 135 [2020-07-21 14:02:06,210 INFO L226 Difference]: Without dead ends: 96 [2020-07-21 14:02:06,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 14:02:06,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-07-21 14:02:06,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-07-21 14:02:06,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-07-21 14:02:06,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 118 transitions. [2020-07-21 14:02:06,234 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 118 transitions. Word has length 40 [2020-07-21 14:02:06,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:06,235 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 118 transitions. [2020-07-21 14:02:06,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 14:02:06,235 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 118 transitions. [2020-07-21 14:02:06,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-21 14:02:06,240 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:06,240 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] [2020-07-21 14:02:06,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:06,441 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:06,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:06,442 INFO L82 PathProgramCache]: Analyzing trace with hash 888728936, now seen corresponding path program 1 times [2020-07-21 14:02:06,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:06,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031439063] [2020-07-21 14:02:06,443 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:06,509 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:06,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:06,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 14:02:06,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:06,540 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:02:06,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:06,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:02:06,561 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:02:06,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:06,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031439063] [2020-07-21 14:02:06,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:02:06,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-07-21 14:02:06,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144654720] [2020-07-21 14:02:06,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 14:02:06,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:06,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 14:02:06,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-21 14:02:06,590 INFO L87 Difference]: Start difference. First operand 96 states and 118 transitions. Second operand 7 states. [2020-07-21 14:02:06,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:06,692 INFO L93 Difference]: Finished difference Result 215 states and 266 transitions. [2020-07-21 14:02:06,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 14:02:06,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-07-21 14:02:06,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:06,694 INFO L225 Difference]: With dead ends: 215 [2020-07-21 14:02:06,694 INFO L226 Difference]: Without dead ends: 139 [2020-07-21 14:02:06,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-07-21 14:02:06,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-07-21 14:02:06,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 109. [2020-07-21 14:02:06,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-07-21 14:02:06,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2020-07-21 14:02:06,705 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 132 transitions. Word has length 40 [2020-07-21 14:02:06,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:06,705 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 132 transitions. [2020-07-21 14:02:06,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 14:02:06,705 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 132 transitions. [2020-07-21 14:02:06,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-21 14:02:06,707 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:06,707 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] [2020-07-21 14:02:06,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:06,923 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:06,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:06,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1526927005, now seen corresponding path program 2 times [2020-07-21 14:02:06,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:06,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426849849] [2020-07-21 14:02:06,925 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:06,990 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:06,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:06,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 14:02:06,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:07,078 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:07,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:02:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:07,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426849849] [2020-07-21 14:02:07,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:02:07,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2020-07-21 14:02:07,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229045945] [2020-07-21 14:02:07,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-21 14:02:07,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:07,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-21 14:02:07,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-07-21 14:02:07,178 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand 15 states. [2020-07-21 14:02:08,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:08,046 INFO L93 Difference]: Finished difference Result 431 states and 557 transitions. [2020-07-21 14:02:08,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-21 14:02:08,047 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-07-21 14:02:08,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:08,049 INFO L225 Difference]: With dead ends: 431 [2020-07-21 14:02:08,050 INFO L226 Difference]: Without dead ends: 251 [2020-07-21 14:02:08,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=756, Unknown=0, NotChecked=0, Total=1056 [2020-07-21 14:02:08,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-07-21 14:02:08,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 162. [2020-07-21 14:02:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-07-21 14:02:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 196 transitions. [2020-07-21 14:02:08,067 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 196 transitions. Word has length 45 [2020-07-21 14:02:08,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:08,067 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 196 transitions. [2020-07-21 14:02:08,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-21 14:02:08,067 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 196 transitions. [2020-07-21 14:02:08,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-21 14:02:08,069 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:08,069 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] [2020-07-21 14:02:08,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:08,285 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:08,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:08,285 INFO L82 PathProgramCache]: Analyzing trace with hash -2066975713, now seen corresponding path program 1 times [2020-07-21 14:02:08,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:08,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250050717] [2020-07-21 14:02:08,286 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:08,358 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:08,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:08,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 14:02:08,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:08,428 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:02:08,430 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:02:08,457 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:08,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:02:08,475 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:02:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:08,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250050717] [2020-07-21 14:02:08,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:02:08,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2020-07-21 14:02:08,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583297337] [2020-07-21 14:02:08,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-21 14:02:08,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:08,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-21 14:02:08,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-07-21 14:02:08,588 INFO L87 Difference]: Start difference. First operand 162 states and 196 transitions. Second operand 15 states. [2020-07-21 14:02:09,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:09,009 INFO L93 Difference]: Finished difference Result 259 states and 314 transitions. [2020-07-21 14:02:09,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-21 14:02:09,009 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-07-21 14:02:09,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:09,013 INFO L225 Difference]: With dead ends: 259 [2020-07-21 14:02:09,013 INFO L226 Difference]: Without dead ends: 257 [2020-07-21 14:02:09,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-07-21 14:02:09,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-07-21 14:02:09,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 162. [2020-07-21 14:02:09,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-07-21 14:02:09,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 196 transitions. [2020-07-21 14:02:09,028 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 196 transitions. Word has length 45 [2020-07-21 14:02:09,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:09,028 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 196 transitions. [2020-07-21 14:02:09,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-21 14:02:09,028 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 196 transitions. [2020-07-21 14:02:09,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-21 14:02:09,030 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:09,030 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] [2020-07-21 14:02:09,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:09,245 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:09,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:09,246 INFO L82 PathProgramCache]: Analyzing trace with hash 709278555, now seen corresponding path program 1 times [2020-07-21 14:02:09,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:09,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823972254] [2020-07-21 14:02:09,247 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:09,313 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:09,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:09,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 14:02:09,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:09,388 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:02:09,390 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:02:09,415 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:09,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:02:09,431 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:02:09,535 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:09,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823972254] [2020-07-21 14:02:09,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:02:09,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-07-21 14:02:09,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158890415] [2020-07-21 14:02:09,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-21 14:02:09,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:09,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-21 14:02:09,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-07-21 14:02:09,538 INFO L87 Difference]: Start difference. First operand 162 states and 196 transitions. Second operand 16 states. [2020-07-21 14:02:10,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:10,100 INFO L93 Difference]: Finished difference Result 304 states and 375 transitions. [2020-07-21 14:02:10,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-21 14:02:10,100 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-07-21 14:02:10,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:10,103 INFO L225 Difference]: With dead ends: 304 [2020-07-21 14:02:10,103 INFO L226 Difference]: Without dead ends: 302 [2020-07-21 14:02:10,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2020-07-21 14:02:10,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-07-21 14:02:10,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 184. [2020-07-21 14:02:10,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-07-21 14:02:10,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 229 transitions. [2020-07-21 14:02:10,120 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 229 transitions. Word has length 45 [2020-07-21 14:02:10,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:10,121 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 229 transitions. [2020-07-21 14:02:10,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-21 14:02:10,121 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 229 transitions. [2020-07-21 14:02:10,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-21 14:02:10,122 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:10,122 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] [2020-07-21 14:02:10,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:10,336 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:10,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:10,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1410343133, now seen corresponding path program 1 times [2020-07-21 14:02:10,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:10,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245944555] [2020-07-21 14:02:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:10,403 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:10,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 14:02:10,403 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 14:02:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 14:02:10,423 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 14:02:10,460 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 14:02:10,460 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 14:02:10,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:10,728 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 [2020-07-21 14:02:10,731 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 [2020-07-21 14:02:10,733 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 [2020-07-21 14:02:10,742 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 [2020-07-21 14:02:10,743 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 [2020-07-21 14:02:10,744 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 [2020-07-21 14:02:10,744 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 [2020-07-21 14:02:10,745 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 [2020-07-21 14:02:10,745 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 [2020-07-21 14:02:10,746 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 [2020-07-21 14:02:10,748 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 [2020-07-21 14:02:10,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:02:10 BoogieIcfgContainer [2020-07-21 14:02:10,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 14:02:10,769 INFO L168 Benchmark]: Toolchain (without parser) took 9671.85 ms. Allocated memory was 140.0 MB in the beginning and 294.1 MB in the end (delta: 154.1 MB). Free memory was 103.6 MB in the beginning and 185.4 MB in the end (delta: -81.8 MB). Peak memory consumption was 72.4 MB. Max. memory is 7.1 GB. [2020-07-21 14:02:10,772 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 140.0 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 14:02:10,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.08 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 103.2 MB in the beginning and 180.3 MB in the end (delta: -77.1 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-07-21 14:02:10,780 INFO L168 Benchmark]: Boogie Preprocessor took 47.82 ms. Allocated memory is still 203.9 MB. Free memory was 180.3 MB in the beginning and 178.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-21 14:02:10,783 INFO L168 Benchmark]: RCFGBuilder took 538.82 ms. Allocated memory is still 203.9 MB. Free memory was 178.3 MB in the beginning and 150.7 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-07-21 14:02:10,784 INFO L168 Benchmark]: TraceAbstraction took 8699.18 ms. Allocated memory was 203.9 MB in the beginning and 294.1 MB in the end (delta: 90.2 MB). Free memory was 150.1 MB in the beginning and 185.4 MB in the end (delta: -35.3 MB). Peak memory consumption was 54.8 MB. Max. memory is 7.1 GB. [2020-07-21 14:02:10,791 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 140.0 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 380.08 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 103.2 MB in the beginning and 180.3 MB in the end (delta: -77.1 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.82 ms. Allocated memory is still 203.9 MB. Free memory was 180.3 MB in the beginning and 178.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 538.82 ms. Allocated memory is still 203.9 MB. Free memory was 178.3 MB in the beginning and 150.7 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8699.18 ms. Allocated memory was 203.9 MB in the beginning and 294.1 MB in the end (delta: 90.2 MB). Free memory was 150.1 MB in the beginning and 185.4 MB in the end (delta: -35.3 MB). Peak memory consumption was 54.8 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={2:0}] [L76] CALL parse_expression_list (A) VAL [str={2:0}] [L48] int start=0, i=-1, j=-1; [L49] char str2[2]; VAL [i=-1, j=-1, start=0, str={2:0}, str={2:0}, str2={3:0}] [L50] COND FALSE !(!str) VAL [i=-1, j=-1, start=0, str={2:0}, str={2:0}, str2={3:0}] [L52] i++ [L53] str[i] [L54] case 0: VAL [i=0, j=-1, start=0, str={2:0}, str={2:0}, str2={3:0}, str[i]=13] [L69] EXPR str[i] VAL [i=0, j=-1, start=0, str={2:0}, str={2:0}, str2={3:0}, str[i]=13] [L69] COND TRUE str[i] != 0 [L52] i++ [L53] str[i] [L54] case 0: VAL [i=1, j=-1, start=0, str={2:0}, str={2:0}, str2={3:0}, str[i]=15] [L69] EXPR str[i] VAL [i=1, j=-1, start=0, str={2:0}, str={2:0}, str2={3:0}, str[i]=15] [L69] COND TRUE str[i] != 0 [L52] i++ [L53] str[i] [L54] case 0: VAL [i=2, j=-1, start=0, str={2:0}, str={2:0}, 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={2:0}, str={2:0}, str2={3:0}, str[i]=0, str[start]=13, str[start]=13] [L55] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L56] EXPR str[start] VAL [i=2, j=-1, start=0, str={2:0}, str={2:0}, str2={3:0}, str[i]=0, str[start]=13] [L56] COND FALSE !(str[start] == '"') [L57] j = i-1 VAL [i=2, j=1, start=0, str={2:0}, str={2:0}, 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={2:0}, str={2:0}, str2={3:0}, str[i]=0, str[j]=15, str[j]=15] [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={2:0}, str={2:0}, str2={3:0}, str[i]=0, str[j]=15, str[j]=15] [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={2:0}, str={2:0}, str2={3:0}, str[i]=0, str[j]=15] [L59] COND FALSE !((0 < j) && (str[j] == '"')) [L60] COND TRUE start<=j VAL [i=2, j=1, start=0, str={2:0}, str={2:0}, str2={3:0}, str[i]=0] [L61] CALL r_strncpy(str2, str+start, j-start+1) VAL [\old(n)=2, dest={3:0}, src={2:0}] [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)={17:18}, start=0, str={2:0}, str={2:0}, 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: 8.5s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 604 SDtfs, 1209 SDslu, 2116 SDs, 0 SdLazy, 1642 SolverSat, 282 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 668 GetRequests, 539 SyntacticMatches, 7 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=12, 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, 12 MinimizatonAttempts, 430 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 497 NumberOfCodeBlocks, 497 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 611 ConstructedInterpolants, 0 QuantifiedInterpolants, 80339 SizeOfPredicates, 31 NumberOfNonLiveVariables, 1738 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 6/64 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...