/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -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 0.1.25-79ed534 [2020-07-20 01:49:02,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:49:02,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:49:02,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:49:02,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:49:02,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:49:02,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:49:02,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:49:02,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:49:02,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:49:02,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:49:02,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:49:02,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:49:02,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:49:02,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:49:02,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:49:02,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:49:02,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:49:02,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:49:02,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:49:02,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:49:02,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:49:02,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:49:02,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:49:02,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 01:49:02,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:49:02,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:49:02,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:49:02,596 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 [2020-07-20 01:49:02,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:49:02,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:49:02,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:49:02,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:49:02,627 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:49:02,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:49:02,627 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:49:02,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:49:02,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:49:02,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:49:02,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:49:02,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:49:02,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:49:02,630 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:49:02,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:49:02,630 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:49:02,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:49:02,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:49:02,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:49:02,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:49:02,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:49:02,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:49:02,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:49:02,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:49:02,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:49:02,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:49:02,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:49:02,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:49:02,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:49:02,633 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES 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 -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 01:49:02,926 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:49:02,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:49:02,947 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:49:02,949 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:49:02,952 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:49:02,953 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-07-20 01:49:03,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/771c1d0d0/3be107066dc14e6cac81bebfcd75e64b/FLAGd46832e69 [2020-07-20 01:49:03,545 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:49:03,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-07-20 01:49:03,556 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/771c1d0d0/3be107066dc14e6cac81bebfcd75e64b/FLAGd46832e69 [2020-07-20 01:49:03,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/771c1d0d0/3be107066dc14e6cac81bebfcd75e64b [2020-07-20 01:49:03,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:49:03,893 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:49:03,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:49:03,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:49:03,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:49:03,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:49:03" (1/1) ... [2020-07-20 01:49:03,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6645bd80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:03, skipping insertion in model container [2020-07-20 01:49:03,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:49:03" (1/1) ... [2020-07-20 01:49:03,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:49:03,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:49:04,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:49:04,135 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:49:04,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:49:04,294 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:49:04,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:04 WrapperNode [2020-07-20 01:49:04,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:49:04,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:49:04,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:49:04,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:49:04,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:04" (1/1) ... [2020-07-20 01:49:04,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:04" (1/1) ... [2020-07-20 01:49:04,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:04" (1/1) ... [2020-07-20 01:49:04,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:04" (1/1) ... [2020-07-20 01:49:04,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:04" (1/1) ... [2020-07-20 01:49:04,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:04" (1/1) ... [2020-07-20 01:49:04,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:04" (1/1) ... [2020-07-20 01:49:04,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:49:04,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:49:04,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:49:04,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:49:04,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:04" (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 [2020-07-20 01:49:04,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:49:04,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:49:04,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 01:49:04,421 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-07-20 01:49:04,421 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-07-20 01:49:04,421 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:49:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:49:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 01:49:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-07-20 01:49:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-07-20 01:49:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-07-20 01:49:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-07-20 01:49:04,423 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-07-20 01:49:04,423 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-07-20 01:49:04,423 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-07-20 01:49:04,423 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-07-20 01:49:04,423 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-20 01:49:04,423 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-07-20 01:49:04,424 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-07-20 01:49:04,424 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-07-20 01:49:04,424 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-07-20 01:49:04,424 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-20 01:49:04,424 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-07-20 01:49:04,424 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-07-20 01:49:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-07-20 01:49:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-07-20 01:49:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-07-20 01:49:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-07-20 01:49:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-07-20 01:49:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-07-20 01:49:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-07-20 01:49:04,426 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-07-20 01:49:04,426 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-07-20 01:49:04,426 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-07-20 01:49:04,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 01:49:04,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 01:49:04,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 01:49:04,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 01:49:04,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:49:04,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:49:04,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:49:04,888 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:49:04,888 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-20 01:49:04,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:49:04 BoogieIcfgContainer [2020-07-20 01:49:04,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:49:04,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:49:04,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:49:04,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:49:04,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:49:03" (1/3) ... [2020-07-20 01:49:04,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b46757d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:49:04, skipping insertion in model container [2020-07-20 01:49:04,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:04" (2/3) ... [2020-07-20 01:49:04,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b46757d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:49:04, skipping insertion in model container [2020-07-20 01:49:04,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:49:04" (3/3) ... [2020-07-20 01:49:04,903 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-07-20 01:49:04,914 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:49:04,921 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:49:04,934 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:49:04,959 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:49:04,960 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:49:04,960 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:49:04,960 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:49:04,960 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:49:04,961 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:49:04,961 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:49:04,961 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:49:04,979 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-07-20 01:49:04,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 01:49:04,987 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:49:04,988 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] [2020-07-20 01:49:04,988 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:49:04,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:49:04,993 INFO L82 PathProgramCache]: Analyzing trace with hash -2018987797, now seen corresponding path program 1 times [2020-07-20 01:49:05,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:49:05,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935783251] [2020-07-20 01:49:05,002 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@36c7c481 [2020-07-20 01:49:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:05,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:49:05,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935783251] [2020-07-20 01:49:05,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:49:05,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 01:49:05,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570765706] [2020-07-20 01:49:05,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 01:49:05,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:49:05,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 01:49:05,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 01:49:05,257 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2020-07-20 01:49:05,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:49:05,491 INFO L93 Difference]: Finished difference Result 93 states and 123 transitions. [2020-07-20 01:49:05,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 01:49:05,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-07-20 01:49:05,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:49:05,501 INFO L225 Difference]: With dead ends: 93 [2020-07-20 01:49:05,501 INFO L226 Difference]: Without dead ends: 43 [2020-07-20 01:49:05,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 01:49:05,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-20 01:49:05,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-07-20 01:49:05,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-20 01:49:05,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2020-07-20 01:49:05,546 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2020-07-20 01:49:05,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:49:05,547 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2020-07-20 01:49:05,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 01:49:05,547 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2020-07-20 01:49:05,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-20 01:49:05,549 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:49:05,549 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] [2020-07-20 01:49:05,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:49:05,549 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:49:05,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:49:05,550 INFO L82 PathProgramCache]: Analyzing trace with hash -171780126, now seen corresponding path program 1 times [2020-07-20 01:49:05,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:49:05,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267847178] [2020-07-20 01:49:05,551 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@36c7c481 [2020-07-20 01:49:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:49:05,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267847178] [2020-07-20 01:49:05,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:49:05,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:49:05,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721191653] [2020-07-20 01:49:05,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:49:05,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:49:05,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:49:05,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:49:05,641 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2020-07-20 01:49:05,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:49:05,767 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2020-07-20 01:49:05,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:49:05,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-07-20 01:49:05,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:49:05,769 INFO L225 Difference]: With dead ends: 78 [2020-07-20 01:49:05,770 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 01:49:05,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:49:05,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 01:49:05,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-20 01:49:05,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 01:49:05,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-20 01:49:05,781 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2020-07-20 01:49:05,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:49:05,782 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-20 01:49:05,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:49:05,782 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-20 01:49:05,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-20 01:49:05,784 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:49:05,784 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] [2020-07-20 01:49:05,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 01:49:05,785 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:49:05,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:49:05,785 INFO L82 PathProgramCache]: Analyzing trace with hash 250921700, now seen corresponding path program 1 times [2020-07-20 01:49:05,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:49:05,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620696905] [2020-07-20 01:49:05,786 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@36c7c481 [2020-07-20 01:49:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:05,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:49:05,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620696905] [2020-07-20 01:49:05,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:49:05,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 01:49:05,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787378817] [2020-07-20 01:49:05,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 01:49:05,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:49:05,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 01:49:05,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-20 01:49:05,959 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 8 states. [2020-07-20 01:49:06,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:49:06,329 INFO L93 Difference]: Finished difference Result 140 states and 187 transitions. [2020-07-20 01:49:06,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 01:49:06,330 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-07-20 01:49:06,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:49:06,334 INFO L225 Difference]: With dead ends: 140 [2020-07-20 01:49:06,335 INFO L226 Difference]: Without dead ends: 91 [2020-07-20 01:49:06,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-07-20 01:49:06,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-20 01:49:06,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 66. [2020-07-20 01:49:06,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-07-20 01:49:06,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2020-07-20 01:49:06,354 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 33 [2020-07-20 01:49:06,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:49:06,354 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2020-07-20 01:49:06,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 01:49:06,355 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2020-07-20 01:49:06,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-20 01:49:06,356 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:49:06,356 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] [2020-07-20 01:49:06,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 01:49:06,357 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:49:06,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:49:06,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1743223006, now seen corresponding path program 1 times [2020-07-20 01:49:06,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:49:06,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158637426] [2020-07-20 01:49:06,358 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@36c7c481 [2020-07-20 01:49:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:49:06,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158637426] [2020-07-20 01:49:06,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:49:06,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 01:49:06,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754327919] [2020-07-20 01:49:06,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 01:49:06,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:49:06,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 01:49:06,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 01:49:06,462 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand 7 states. [2020-07-20 01:49:06,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:49:06,642 INFO L93 Difference]: Finished difference Result 136 states and 180 transitions. [2020-07-20 01:49:06,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 01:49:06,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-07-20 01:49:06,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:49:06,644 INFO L225 Difference]: With dead ends: 136 [2020-07-20 01:49:06,644 INFO L226 Difference]: Without dead ends: 92 [2020-07-20 01:49:06,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 01:49:06,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-07-20 01:49:06,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 76. [2020-07-20 01:49:06,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-20 01:49:06,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2020-07-20 01:49:06,657 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 33 [2020-07-20 01:49:06,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:49:06,657 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2020-07-20 01:49:06,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 01:49:06,658 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2020-07-20 01:49:06,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-20 01:49:06,659 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:49:06,659 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] [2020-07-20 01:49:06,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 01:49:06,660 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:49:06,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:49:06,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1042158428, now seen corresponding path program 1 times [2020-07-20 01:49:06,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:49:06,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454777922] [2020-07-20 01:49:06,661 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@36c7c481 [2020-07-20 01:49:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:06,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:49:06,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454777922] [2020-07-20 01:49:06,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:49:06,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 01:49:06,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404216817] [2020-07-20 01:49:06,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 01:49:06,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:49:06,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 01:49:06,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 01:49:06,760 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 6 states. [2020-07-20 01:49:06,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:49:06,971 INFO L93 Difference]: Finished difference Result 138 states and 179 transitions. [2020-07-20 01:49:06,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 01:49:06,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-07-20 01:49:06,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:49:06,973 INFO L225 Difference]: With dead ends: 138 [2020-07-20 01:49:06,973 INFO L226 Difference]: Without dead ends: 89 [2020-07-20 01:49:06,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-07-20 01:49:06,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-20 01:49:06,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2020-07-20 01:49:06,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-20 01:49:06,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 108 transitions. [2020-07-20 01:49:06,984 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 108 transitions. Word has length 33 [2020-07-20 01:49:06,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:49:06,984 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 108 transitions. [2020-07-20 01:49:06,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 01:49:06,984 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 108 transitions. [2020-07-20 01:49:06,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-20 01:49:06,985 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:49:06,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:49:06,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 01:49:06,986 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:49:06,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:49:06,987 INFO L82 PathProgramCache]: Analyzing trace with hash -151257089, now seen corresponding path program 1 times [2020-07-20 01:49:06,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:49:06,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485790335] [2020-07-20 01:49:06,988 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@36c7c481 [2020-07-20 01:49:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:07,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:49:07,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485790335] [2020-07-20 01:49:07,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:49:07,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 01:49:07,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616840157] [2020-07-20 01:49:07,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 01:49:07,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:49:07,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 01:49:07,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:49:07,045 INFO L87 Difference]: Start difference. First operand 83 states and 108 transitions. Second operand 5 states. [2020-07-20 01:49:07,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:49:07,146 INFO L93 Difference]: Finished difference Result 124 states and 161 transitions. [2020-07-20 01:49:07,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 01:49:07,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-07-20 01:49:07,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:49:07,148 INFO L225 Difference]: With dead ends: 124 [2020-07-20 01:49:07,148 INFO L226 Difference]: Without dead ends: 89 [2020-07-20 01:49:07,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 01:49:07,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-20 01:49:07,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-07-20 01:49:07,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-07-20 01:49:07,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 114 transitions. [2020-07-20 01:49:07,158 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 114 transitions. Word has length 35 [2020-07-20 01:49:07,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:49:07,158 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 114 transitions. [2020-07-20 01:49:07,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 01:49:07,158 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 114 transitions. [2020-07-20 01:49:07,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-20 01:49:07,160 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:49:07,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:49:07,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 01:49:07,160 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:49:07,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:49:07,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1172325443, now seen corresponding path program 1 times [2020-07-20 01:49:07,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:49:07,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029717028] [2020-07-20 01:49:07,162 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@36c7c481 [2020-07-20 01:49:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:07,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:49:07,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029717028] [2020-07-20 01:49:07,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:49:07,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 01:49:07,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440047855] [2020-07-20 01:49:07,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 01:49:07,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:49:07,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 01:49:07,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-20 01:49:07,225 INFO L87 Difference]: Start difference. First operand 89 states and 114 transitions. Second operand 7 states. [2020-07-20 01:49:07,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:49:07,374 INFO L93 Difference]: Finished difference Result 147 states and 187 transitions. [2020-07-20 01:49:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 01:49:07,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-07-20 01:49:07,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:49:07,376 INFO L225 Difference]: With dead ends: 147 [2020-07-20 01:49:07,376 INFO L226 Difference]: Without dead ends: 89 [2020-07-20 01:49:07,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-07-20 01:49:07,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-20 01:49:07,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2020-07-20 01:49:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-20 01:49:07,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2020-07-20 01:49:07,385 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 35 [2020-07-20 01:49:07,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:49:07,385 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2020-07-20 01:49:07,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 01:49:07,385 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2020-07-20 01:49:07,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 01:49:07,387 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:49:07,387 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] [2020-07-20 01:49:07,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 01:49:07,387 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:49:07,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:49:07,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1310821647, now seen corresponding path program 1 times [2020-07-20 01:49:07,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:49:07,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248041032] [2020-07-20 01:49:07,388 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@36c7c481 [2020-07-20 01:49:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:07,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 01:49:07,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248041032] [2020-07-20 01:49:07,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:49:07,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 01:49:07,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608481915] [2020-07-20 01:49:07,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 01:49:07,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:49:07,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 01:49:07,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 01:49:07,514 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand 8 states. [2020-07-20 01:49:07,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:49:07,751 INFO L93 Difference]: Finished difference Result 107 states and 134 transitions. [2020-07-20 01:49:07,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 01:49:07,752 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-07-20 01:49:07,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:49:07,753 INFO L225 Difference]: With dead ends: 107 [2020-07-20 01:49:07,753 INFO L226 Difference]: Without dead ends: 105 [2020-07-20 01:49:07,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-07-20 01:49:07,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-20 01:49:07,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2020-07-20 01:49:07,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-07-20 01:49:07,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2020-07-20 01:49:07,762 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 38 [2020-07-20 01:49:07,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:49:07,763 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2020-07-20 01:49:07,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 01:49:07,763 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2020-07-20 01:49:07,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-20 01:49:07,765 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:49:07,766 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] [2020-07-20 01:49:07,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-20 01:49:07,766 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:49:07,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:49:07,767 INFO L82 PathProgramCache]: Analyzing trace with hash 888728936, now seen corresponding path program 1 times [2020-07-20 01:49:07,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:49:07,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239060614] [2020-07-20 01:49:07,767 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@36c7c481 [2020-07-20 01:49:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:49:07,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239060614] [2020-07-20 01:49:07,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722929066] [2020-07-20 01:49:07,867 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6553a3f7 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:49:08,007 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6553a3f7 issued 3 check-sat command(s) [2020-07-20 01:49:08,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:49:08,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 01:49:08,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:49:08,064 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:49:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:49:08,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:49:08,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2020-07-20 01:49:08,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031011643] [2020-07-20 01:49:08,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 01:49:08,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:49:08,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 01:49:08,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-20 01:49:08,075 INFO L87 Difference]: Start difference. First operand 93 states and 116 transitions. Second operand 8 states. [2020-07-20 01:49:08,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:49:08,278 INFO L93 Difference]: Finished difference Result 209 states and 263 transitions. [2020-07-20 01:49:08,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 01:49:08,278 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-07-20 01:49:08,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:49:08,282 INFO L225 Difference]: With dead ends: 209 [2020-07-20 01:49:08,282 INFO L226 Difference]: Without dead ends: 136 [2020-07-20 01:49:08,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-07-20 01:49:08,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-20 01:49:08,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 106. [2020-07-20 01:49:08,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-07-20 01:49:08,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 130 transitions. [2020-07-20 01:49:08,291 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 130 transitions. Word has length 40 [2020-07-20 01:49:08,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:49:08,291 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 130 transitions. [2020-07-20 01:49:08,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 01:49:08,292 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 130 transitions. [2020-07-20 01:49:08,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 01:49:08,293 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:49:08,293 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] [2020-07-20 01:49:08,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-07-20 01:49:08,507 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:49:08,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:49:08,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1526927005, now seen corresponding path program 2 times [2020-07-20 01:49:08,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:49:08,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139006943] [2020-07-20 01:49:08,508 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@36c7c481 [2020-07-20 01:49:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:08,635 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:49:08,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139006943] [2020-07-20 01:49:08,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873999231] [2020-07-20 01:49:08,636 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1a2e983 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:49:08,720 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1a2e983 issued 4 check-sat command(s) [2020-07-20 01:49:08,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:49:08,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 01:49:08,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:49:08,857 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:49:08,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:49:08,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2020-07-20 01:49:08,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061410262] [2020-07-20 01:49:08,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-20 01:49:08,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:49:08,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-20 01:49:08,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2020-07-20 01:49:08,860 INFO L87 Difference]: Start difference. First operand 106 states and 130 transitions. Second operand 19 states. [2020-07-20 01:49:09,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:49:09,579 INFO L93 Difference]: Finished difference Result 240 states and 302 transitions. [2020-07-20 01:49:09,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 01:49:09,579 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-07-20 01:49:09,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:49:09,582 INFO L225 Difference]: With dead ends: 240 [2020-07-20 01:49:09,582 INFO L226 Difference]: Without dead ends: 189 [2020-07-20 01:49:09,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2020-07-20 01:49:09,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-07-20 01:49:09,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 127. [2020-07-20 01:49:09,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-07-20 01:49:09,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 158 transitions. [2020-07-20 01:49:09,593 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 158 transitions. Word has length 45 [2020-07-20 01:49:09,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:49:09,594 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 158 transitions. [2020-07-20 01:49:09,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-20 01:49:09,594 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 158 transitions. [2020-07-20 01:49:09,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 01:49:09,595 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:49:09,596 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] [2020-07-20 01:49:09,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-20 01:49:09,810 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:49:09,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:49:09,811 INFO L82 PathProgramCache]: Analyzing trace with hash 709278555, now seen corresponding path program 1 times [2020-07-20 01:49:09,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:49:09,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985114011] [2020-07-20 01:49:09,812 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@36c7c481 [2020-07-20 01:49:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:49:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:49:09,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985114011] [2020-07-20 01:49:09,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333562311] [2020-07-20 01:49:09,984 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@285867ee No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:49:10,059 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@285867ee issued 4 check-sat command(s) [2020-07-20 01:49:10,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:49:10,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 01:49:10,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:49:10,177 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:49:10,179 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:49:10,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:49:10,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:49:10,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2020-07-20 01:49:10,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408326408] [2020-07-20 01:49:10,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-20 01:49:10,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:49:10,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-20 01:49:10,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-07-20 01:49:10,216 INFO L87 Difference]: Start difference. First operand 127 states and 158 transitions. Second operand 19 states. [2020-07-20 01:49:10,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:49:10,828 INFO L93 Difference]: Finished difference Result 212 states and 267 transitions. [2020-07-20 01:49:10,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-20 01:49:10,831 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-07-20 01:49:10,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:49:10,833 INFO L225 Difference]: With dead ends: 212 [2020-07-20 01:49:10,834 INFO L226 Difference]: Without dead ends: 210 [2020-07-20 01:49:10,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2020-07-20 01:49:10,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-07-20 01:49:10,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 146. [2020-07-20 01:49:10,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-07-20 01:49:10,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 187 transitions. [2020-07-20 01:49:10,845 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 187 transitions. Word has length 45 [2020-07-20 01:49:10,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:49:10,845 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 187 transitions. [2020-07-20 01:49:10,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-20 01:49:10,846 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 187 transitions. [2020-07-20 01:49:10,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 01:49:10,847 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:49:10,847 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] [2020-07-20 01:49:11,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-07-20 01:49:11,061 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:49:11,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:49:11,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1410343133, now seen corresponding path program 1 times [2020-07-20 01:49:11,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:49:11,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036976188] [2020-07-20 01:49:11,064 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@36c7c481 [2020-07-20 01:49:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:49:11,088 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:49:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:49:11,109 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:49:11,147 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 01:49:11,148 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 01:49:11,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-20 01:49:11,189 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 [2020-07-20 01:49:11,192 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 [2020-07-20 01:49:11,193 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 [2020-07-20 01:49:11,194 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 [2020-07-20 01:49:11,194 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 [2020-07-20 01:49:11,195 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 [2020-07-20 01:49:11,195 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 [2020-07-20 01:49:11,196 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 [2020-07-20 01:49:11,197 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 [2020-07-20 01:49:11,197 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 [2020-07-20 01:49:11,198 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 [2020-07-20 01:49:11,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:49:11 BoogieIcfgContainer [2020-07-20 01:49:11,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:49:11,215 INFO L168 Benchmark]: Toolchain (without parser) took 7322.72 ms. Allocated memory was 136.8 MB in the beginning and 293.1 MB in the end (delta: 156.2 MB). Free memory was 100.7 MB in the beginning and 194.2 MB in the end (delta: -93.4 MB). Peak memory consumption was 62.8 MB. Max. memory is 7.1 GB. [2020-07-20 01:49:11,216 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 01:49:11,217 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.00 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 100.3 MB in the beginning and 177.5 MB in the end (delta: -77.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-07-20 01:49:11,218 INFO L168 Benchmark]: Boogie Preprocessor took 47.40 ms. Allocated memory is still 200.8 MB. Free memory was 177.5 MB in the beginning and 175.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-20 01:49:11,219 INFO L168 Benchmark]: RCFGBuilder took 550.24 ms. Allocated memory is still 200.8 MB. Free memory was 174.7 MB in the beginning and 147.3 MB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2020-07-20 01:49:11,220 INFO L168 Benchmark]: TraceAbstraction took 6318.05 ms. Allocated memory was 200.8 MB in the beginning and 293.1 MB in the end (delta: 92.3 MB). Free memory was 146.6 MB in the beginning and 194.2 MB in the end (delta: -47.5 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. [2020-07-20 01:49:11,224 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 401.00 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 100.3 MB in the beginning and 177.5 MB in the end (delta: -77.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.40 ms. Allocated memory is still 200.8 MB. Free memory was 177.5 MB in the beginning and 175.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 550.24 ms. Allocated memory is still 200.8 MB. Free memory was 174.7 MB in the beginning and 147.3 MB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6318.05 ms. Allocated memory was 200.8 MB in the beginning and 293.1 MB in the end (delta: 92.3 MB). Free memory was 146.6 MB in the beginning and 194.2 MB in the end (delta: -47.5 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L74] char A [2 + 2 + 4 +1]; [L75] A[2 + 2 + 4] = 0 VAL [A={4:0}] [L76] CALL parse_expression_list (A) VAL [str={4:0}] [L48] int start=0, i=-1, j=-1; [L49] char str2[2]; VAL [i=-1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}] [L50] COND FALSE !(!str) VAL [i=-1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}] [L52] i++ [L53] str[i] [L54] case 0: VAL [i=0, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=-1] [L69] EXPR str[i] VAL [i=0, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=-1] [L69] COND TRUE str[i] != 0 [L52] i++ [L53] str[i] [L54] case 0: VAL [i=1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=-2] [L69] EXPR str[i] VAL [i=1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=-2] [L69] COND TRUE str[i] != 0 [L52] i++ [L53] str[i] [L54] case 0: VAL [i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L55] EXPR str[start] [L55] (str[start] == ' ') || (str[start] == '\t') [L55] EXPR str[start] [L55] (str[start] == ' ') || (str[start] == '\t') VAL [(str[start] == ' ') || (str[start] == '\t')=0, i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[start]=-1, str[start]=-1] [L55] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L56] EXPR str[start] VAL [i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[start]=-1] [L56] COND FALSE !(str[start] == '"') [L57] j = i-1 VAL [i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L58] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L58] EXPR str[j] [L58] EXPR (str[j] == ' ') || (str[j] == '\t') [L58] EXPR str[j] [L58] EXPR (str[j] == ' ') || (str[j] == '\t') VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=1, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=-2, str[j]=-2] [L58] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=0, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=-2, str[j]=-2] [L58] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L59] (0 < j) && (str[j] == '"') [L59] EXPR str[j] [L59] (0 < j) && (str[j] == '"') VAL [(0 < j) && (str[j] == '"')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=-2] [L59] COND FALSE !((0 < j) && (str[j] == '"')) [L60] COND TRUE start<=j VAL [i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L61] CALL r_strncpy(str2, str+start, j-start+1) VAL [\old(n)=2, dest={3:0}, src={4:0}] [L30] return strncpy(dest,src,n); [L61] RET r_strncpy(str2, str+start, j-start+1) VAL [i=2, j=1, r_strncpy(str2, str+start, j-start+1)={35:37}, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L62] CALL __VERIFIER_assert(j - start + 1 < 2) VAL [\old(cond)=0] [L3] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.1s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 532 SDtfs, 954 SDslu, 1451 SDs, 0 SdLazy, 2054 SolverSat, 255 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 278 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 219 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 574 NumberOfCodeBlocks, 564 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 515 ConstructedInterpolants, 0 QuantifiedInterpolants, 68435 SizeOfPredicates, 8 NumberOfNonLiveVariables, 470 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 2/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...