/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 BIGGEST_EQUIVALENCE_CLASS --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/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 05:46:36,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 05:46:36,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 05:46:36,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 05:46:36,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 05:46:36,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 05:46:36,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 05:46:36,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 05:46:36,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 05:46:36,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 05:46:36,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 05:46:36,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 05:46:36,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 05:46:36,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 05:46:36,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 05:46:36,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 05:46:36,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 05:46:36,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 05:46:36,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 05:46:36,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 05:46:36,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 05:46:36,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 05:46:36,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 05:46:36,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 05:46:36,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 05:46:36,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 05:46:36,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 05:46:36,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 05:46:36,475 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 05:46:36,490 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 05:46:36,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 05:46:36,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 05:46:36,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 05:46:36,491 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 05:46:36,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 05:46:36,492 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 05:46:36,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 05:46:36,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 05:46:36,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 05:46:36,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 05:46:36,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 05:46:36,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 05:46:36,493 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 05:46:36,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 05:46:36,493 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 05:46:36,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 05:46:36,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 05:46:36,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 05:46:36,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 05:46:36,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 05:46:36,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 05:46:36,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 05:46:36,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 05:46:36,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 05:46:36,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 05:46:36,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 05:46:36,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 05:46:36,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 05:46:36,496 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS 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 05:46:36,788 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 05:46:36,808 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 05:46:36,811 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 05:46:36,816 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 05:46:36,816 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 05:46:36,818 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-07-20 05:46:36,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8edb2a115/0a3c6dd907e74f67a7ed835c7cb04254/FLAGcf447fdc4 [2020-07-20 05:46:37,364 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 05:46:37,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-07-20 05:46:37,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8edb2a115/0a3c6dd907e74f67a7ed835c7cb04254/FLAGcf447fdc4 [2020-07-20 05:46:37,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8edb2a115/0a3c6dd907e74f67a7ed835c7cb04254 [2020-07-20 05:46:37,727 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 05:46:37,731 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 05:46:37,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 05:46:37,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 05:46:37,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 05:46:37,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:46:37" (1/1) ... [2020-07-20 05:46:37,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2652dd25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:37, skipping insertion in model container [2020-07-20 05:46:37,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:46:37" (1/1) ... [2020-07-20 05:46:37,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 05:46:37,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 05:46:37,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:46:37,969 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 05:46:37,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:46:38,008 INFO L208 MainTranslator]: Completed translation [2020-07-20 05:46:38,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:38 WrapperNode [2020-07-20 05:46:38,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 05:46:38,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 05:46:38,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 05:46:38,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 05:46:38,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:38" (1/1) ... [2020-07-20 05:46:38,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:38" (1/1) ... [2020-07-20 05:46:38,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:38" (1/1) ... [2020-07-20 05:46:38,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:38" (1/1) ... [2020-07-20 05:46:38,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:38" (1/1) ... [2020-07-20 05:46:38,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:38" (1/1) ... [2020-07-20 05:46:38,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:38" (1/1) ... [2020-07-20 05:46:38,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 05:46:38,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 05:46:38,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 05:46:38,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 05:46:38,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:38" (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 05:46:38,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 05:46:38,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 05:46:38,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-20 05:46:38,205 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-20 05:46:38,205 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-20 05:46:38,206 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-07-20 05:46:38,207 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-07-20 05:46:38,207 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-07-20 05:46:38,207 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-07-20 05:46:38,208 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-07-20 05:46:38,208 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-07-20 05:46:38,208 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 05:46:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 05:46:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-20 05:46:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 05:46:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-20 05:46:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-20 05:46:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-07-20 05:46:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-07-20 05:46:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-07-20 05:46:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-07-20 05:46:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-07-20 05:46:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-07-20 05:46:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 05:46:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 05:46:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 05:46:38,569 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 05:46:38,570 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 05:46:38,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:46:38 BoogieIcfgContainer [2020-07-20 05:46:38,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 05:46:38,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 05:46:38,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 05:46:38,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 05:46:38,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:46:37" (1/3) ... [2020-07-20 05:46:38,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511c872c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:46:38, skipping insertion in model container [2020-07-20 05:46:38,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:38" (2/3) ... [2020-07-20 05:46:38,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511c872c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:46:38, skipping insertion in model container [2020-07-20 05:46:38,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:46:38" (3/3) ... [2020-07-20 05:46:38,590 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-07-20 05:46:38,600 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 05:46:38,607 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 05:46:38,618 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 05:46:38,643 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 05:46:38,643 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 05:46:38,643 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 05:46:38,643 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 05:46:38,643 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 05:46:38,643 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 05:46:38,644 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 05:46:38,644 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 05:46:38,663 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-07-20 05:46:38,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 05:46:38,669 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:38,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:46:38,670 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:38,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:38,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1865767033, now seen corresponding path program 1 times [2020-07-20 05:46:38,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:38,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937119070] [2020-07-20 05:46:38,686 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f2e2508 [2020-07-20 05:46:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:38,860 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 05:46:38,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937119070] [2020-07-20 05:46:38,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:38,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 05:46:38,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61040448] [2020-07-20 05:46:38,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 05:46:38,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:38,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 05:46:38,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 05:46:38,882 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-07-20 05:46:39,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:39,073 INFO L93 Difference]: Finished difference Result 140 states and 185 transitions. [2020-07-20 05:46:39,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 05:46:39,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-07-20 05:46:39,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:39,089 INFO L225 Difference]: With dead ends: 140 [2020-07-20 05:46:39,089 INFO L226 Difference]: Without dead ends: 70 [2020-07-20 05:46:39,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 05:46:39,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-20 05:46:39,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2020-07-20 05:46:39,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-20 05:46:39,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-07-20 05:46:39,151 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 16 [2020-07-20 05:46:39,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:39,151 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-07-20 05:46:39,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 05:46:39,152 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-07-20 05:46:39,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 05:46:39,153 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:39,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:46:39,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 05:46:39,154 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:39,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:39,155 INFO L82 PathProgramCache]: Analyzing trace with hash 6927045, now seen corresponding path program 1 times [2020-07-20 05:46:39,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:39,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623860780] [2020-07-20 05:46:39,156 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f2e2508 [2020-07-20 05:46:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:39,254 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 05:46:39,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623860780] [2020-07-20 05:46:39,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:39,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 05:46:39,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602370400] [2020-07-20 05:46:39,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 05:46:39,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:39,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 05:46:39,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 05:46:39,258 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 5 states. [2020-07-20 05:46:39,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:39,481 INFO L93 Difference]: Finished difference Result 112 states and 143 transitions. [2020-07-20 05:46:39,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 05:46:39,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-20 05:46:39,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:39,485 INFO L225 Difference]: With dead ends: 112 [2020-07-20 05:46:39,486 INFO L226 Difference]: Without dead ends: 106 [2020-07-20 05:46:39,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 05:46:39,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-20 05:46:39,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2020-07-20 05:46:39,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-07-20 05:46:39,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 132 transitions. [2020-07-20 05:46:39,513 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 132 transitions. Word has length 17 [2020-07-20 05:46:39,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:39,513 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 132 transitions. [2020-07-20 05:46:39,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 05:46:39,514 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 132 transitions. [2020-07-20 05:46:39,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 05:46:39,515 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:39,515 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 05:46:39,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 05:46:39,516 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:39,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:39,517 INFO L82 PathProgramCache]: Analyzing trace with hash -695621135, now seen corresponding path program 1 times [2020-07-20 05:46:39,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:39,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541023825] [2020-07-20 05:46:39,518 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f2e2508 [2020-07-20 05:46:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:39,652 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 05:46:39,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541023825] [2020-07-20 05:46:39,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:39,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 05:46:39,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794283362] [2020-07-20 05:46:39,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 05:46:39,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:39,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 05:46:39,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 05:46:39,655 INFO L87 Difference]: Start difference. First operand 102 states and 132 transitions. Second operand 6 states. [2020-07-20 05:46:39,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:39,909 INFO L93 Difference]: Finished difference Result 253 states and 356 transitions. [2020-07-20 05:46:39,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 05:46:39,909 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-07-20 05:46:39,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:39,912 INFO L225 Difference]: With dead ends: 253 [2020-07-20 05:46:39,912 INFO L226 Difference]: Without dead ends: 162 [2020-07-20 05:46:39,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 05:46:39,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-07-20 05:46:39,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 126. [2020-07-20 05:46:39,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-20 05:46:39,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 169 transitions. [2020-07-20 05:46:39,935 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 169 transitions. Word has length 29 [2020-07-20 05:46:39,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:39,935 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 169 transitions. [2020-07-20 05:46:39,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 05:46:39,935 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 169 transitions. [2020-07-20 05:46:39,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-20 05:46:39,937 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:39,937 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:46:39,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 05:46:39,938 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:39,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:39,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1328709660, now seen corresponding path program 1 times [2020-07-20 05:46:39,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:39,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030202386] [2020-07-20 05:46:39,939 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f2e2508 [2020-07-20 05:46:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:40,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030202386] [2020-07-20 05:46:40,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094280648] [2020-07-20 05:46:40,060 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4bf074c6 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:46:40,135 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4bf074c6 issued 4 check-sat command(s) [2020-07-20 05:46:40,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:46:40,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 05:46:40,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:46:40,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:40,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:46:40,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 7 [2020-07-20 05:46:40,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109219784] [2020-07-20 05:46:40,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 05:46:40,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:40,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 05:46:40,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-20 05:46:40,183 INFO L87 Difference]: Start difference. First operand 126 states and 169 transitions. Second operand 7 states. [2020-07-20 05:46:40,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:40,468 INFO L93 Difference]: Finished difference Result 350 states and 513 transitions. [2020-07-20 05:46:40,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 05:46:40,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-07-20 05:46:40,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:40,472 INFO L225 Difference]: With dead ends: 350 [2020-07-20 05:46:40,472 INFO L226 Difference]: Without dead ends: 235 [2020-07-20 05:46:40,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-20 05:46:40,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-07-20 05:46:40,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 150. [2020-07-20 05:46:40,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-07-20 05:46:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 208 transitions. [2020-07-20 05:46:40,497 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 208 transitions. Word has length 40 [2020-07-20 05:46:40,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:40,498 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 208 transitions. [2020-07-20 05:46:40,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 05:46:40,498 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 208 transitions. [2020-07-20 05:46:40,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 05:46:40,500 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:40,501 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:46:40,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:46:40,715 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:40,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:40,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1520942249, now seen corresponding path program 1 times [2020-07-20 05:46:40,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:40,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400851134] [2020-07-20 05:46:40,717 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f2e2508 [2020-07-20 05:46:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:40,881 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:40,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400851134] [2020-07-20 05:46:40,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499011940] [2020-07-20 05:46:40,882 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746d287e 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 05:46:40,977 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746d287e issued 4 check-sat command(s) [2020-07-20 05:46:40,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:46:40,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 05:46:40,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:46:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:41,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:46:41,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8 [2020-07-20 05:46:41,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098760399] [2020-07-20 05:46:41,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 05:46:41,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:41,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 05:46:41,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 05:46:41,015 INFO L87 Difference]: Start difference. First operand 150 states and 208 transitions. Second operand 8 states. [2020-07-20 05:46:41,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:41,341 INFO L93 Difference]: Finished difference Result 447 states and 675 transitions. [2020-07-20 05:46:41,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 05:46:41,341 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-07-20 05:46:41,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:41,348 INFO L225 Difference]: With dead ends: 447 [2020-07-20 05:46:41,348 INFO L226 Difference]: Without dead ends: 308 [2020-07-20 05:46:41,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-07-20 05:46:41,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-07-20 05:46:41,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 174. [2020-07-20 05:46:41,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-07-20 05:46:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 249 transitions. [2020-07-20 05:46:41,395 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 249 transitions. Word has length 51 [2020-07-20 05:46:41,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:41,396 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 249 transitions. [2020-07-20 05:46:41,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 05:46:41,396 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 249 transitions. [2020-07-20 05:46:41,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-20 05:46:41,401 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:41,404 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:46:41,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:46:41,605 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:41,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:41,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1574199465, now seen corresponding path program 1 times [2020-07-20 05:46:41,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:41,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446275379] [2020-07-20 05:46:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f2e2508 [2020-07-20 05:46:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:41,689 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-07-20 05:46:41,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446275379] [2020-07-20 05:46:41,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:41,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 05:46:41,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995420122] [2020-07-20 05:46:41,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 05:46:41,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:41,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 05:46:41,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 05:46:41,692 INFO L87 Difference]: Start difference. First operand 174 states and 249 transitions. Second operand 6 states. [2020-07-20 05:46:41,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:41,823 INFO L93 Difference]: Finished difference Result 318 states and 465 transitions. [2020-07-20 05:46:41,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 05:46:41,823 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-07-20 05:46:41,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:41,825 INFO L225 Difference]: With dead ends: 318 [2020-07-20 05:46:41,825 INFO L226 Difference]: Without dead ends: 155 [2020-07-20 05:46:41,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 05:46:41,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-07-20 05:46:41,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 98. [2020-07-20 05:46:41,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-20 05:46:41,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 130 transitions. [2020-07-20 05:46:41,836 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 130 transitions. Word has length 63 [2020-07-20 05:46:41,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:41,837 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 130 transitions. [2020-07-20 05:46:41,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 05:46:41,837 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 130 transitions. [2020-07-20 05:46:41,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-20 05:46:41,845 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:41,845 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:46:41,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 05:46:41,845 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:41,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:41,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1192820603, now seen corresponding path program 1 times [2020-07-20 05:46:41,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:41,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271158491] [2020-07-20 05:46:41,846 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f2e2508 [2020-07-20 05:46:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 05:46:41,889 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 05:46:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 05:46:41,924 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 05:46:41,945 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 05:46:41,946 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 05:46:41,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 05:46:41,973 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 05:46:41,974 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 05:46:41,975 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 05:46:41,976 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 05:46:41,976 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 05:46:41,976 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 05:46:41,977 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 05:46:41,977 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 05:46:41,978 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 05:46:41,978 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 05:46:41,979 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 05:46:41,979 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 05:46:41,980 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 05:46:41,980 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 05:46:41,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:46:41 BoogieIcfgContainer [2020-07-20 05:46:41,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 05:46:42,000 INFO L168 Benchmark]: Toolchain (without parser) took 4270.08 ms. Allocated memory was 146.3 MB in the beginning and 245.9 MB in the end (delta: 99.6 MB). Free memory was 104.1 MB in the beginning and 107.0 MB in the end (delta: -2.9 MB). Peak memory consumption was 96.8 MB. Max. memory is 7.1 GB. [2020-07-20 05:46:42,002 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 146.3 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 05:46:42,006 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.67 ms. Allocated memory is still 146.3 MB. Free memory was 103.7 MB in the beginning and 93.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-20 05:46:42,008 INFO L168 Benchmark]: Boogie Preprocessor took 126.18 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 93.5 MB in the beginning and 182.1 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-20 05:46:42,010 INFO L168 Benchmark]: RCFGBuilder took 439.53 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 162.1 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-07-20 05:46:42,011 INFO L168 Benchmark]: TraceAbstraction took 3420.00 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 161.5 MB in the beginning and 107.0 MB in the end (delta: 54.5 MB). Peak memory consumption was 96.9 MB. Max. memory is 7.1 GB. [2020-07-20 05:46:42,021 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 146.3 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 277.67 ms. Allocated memory is still 146.3 MB. Free memory was 103.7 MB in the beginning and 93.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.18 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 93.5 MB in the beginning and 182.1 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 439.53 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 162.1 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3420.00 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 161.5 MB in the beginning and 107.0 MB in the end (delta: 54.5 MB). Peak memory consumption was 96.9 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 - 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: [L9] int ldv_mutex = 1; [L11] int open_called = 0; VAL [\old(ldv_mutex)=5, \old(open_called)=4, ldv_mutex=1, open_called=0] [L74] int ldv_s_misc_fops_file_operations = 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L75] CALL my_init() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L69] open_called = 0 [L70] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L75] RET my_init() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, my_init()=0, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L81] COND TRUE ldv_s_misc_fops_file_operations==0 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L82] CALL misc_open() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L57] COND TRUE __VERIFIER_nondet_int() [L59] return 1; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=1, ldv_mutex=1, open_called=0] [L82] RET misc_open() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, misc_open()=1, open_called=0] [L83] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L89] COND TRUE ldv_s_misc_fops_file_operations==1 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L90] CALL misc_read() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L52] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L90] RET misc_read() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, misc_read()=0, open_called=0] [L91] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L97] COND TRUE ldv_s_misc_fops_file_operations==2 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L98] CALL misc_llseek() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L48] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L98] RET misc_llseek() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, misc_llseek()=0, open_called=0] [L99] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L104] case 3: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L105] COND TRUE ldv_s_misc_fops_file_operations==3 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L106] CALL misc_release() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L34] COND FALSE !(\read(open_called)) VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L41] CALL mutex_lock() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L16] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L17] ldv_mutex = 2 VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=2, open_called=0] [L41] RET mutex_lock() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=2, open_called=0] [L42] CALL mutex_lock() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L16] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L16] CALL __blast_assert() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L4] __VERIFIER_error() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 408 SDtfs, 650 SDslu, 701 SDs, 0 SdLazy, 650 SolverSat, 240 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=5, 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, 6 MinimizatonAttempts, 321 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 370 NumberOfCodeBlocks, 370 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 299 ConstructedInterpolants, 0 QuantifiedInterpolants, 24107 SizeOfPredicates, 2 NumberOfNonLiveVariables, 254 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 25/53 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...