/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:43:31,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:43:31,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:43:31,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 16:43:31,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:43:31,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:43:31,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:43:31,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:43:31,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:43:31,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:43:31,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:43:31,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:43:31,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:43:31,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:43:31,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:43:31,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:43:31,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:43:31,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:43:31,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:43:31,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:43:31,423 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 [2020-08-22 16:43:31,471 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:43:31,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:43:31,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:43:31,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:43:31,474 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:43:31,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:43:31,475 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:43:31,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:43:31,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:43:31,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:43:31,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:43:31,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:43:31,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:43:31,478 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:43:31,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:43:31,478 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:43:31,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:43:31,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:43:31,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:43:31,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:43:31,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:43:31,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:43:31,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:43:31,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:43:31,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:43:31,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:43:31,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:43:31,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:43:31,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:43:31,481 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:43:31,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:43:31,830 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:43:31,834 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:43:31,836 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:43:31,836 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:43:31,837 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-08-22 16:43:31,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24707688c/88469e2cf7c4411ca7caf2c7b9123876/FLAG586fb0f57 [2020-08-22 16:43:32,426 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:43:32,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-08-22 16:43:32,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24707688c/88469e2cf7c4411ca7caf2c7b9123876/FLAG586fb0f57 [2020-08-22 16:43:32,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24707688c/88469e2cf7c4411ca7caf2c7b9123876 [2020-08-22 16:43:32,787 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:43:32,789 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:43:32,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:43:32,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:43:32,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:43:32,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:43:32" (1/1) ... [2020-08-22 16:43:32,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b03ff29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:32, skipping insertion in model container [2020-08-22 16:43:32,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:43:32" (1/1) ... [2020-08-22 16:43:32,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:43:32,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:43:33,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:43:33,035 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:43:33,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:43:33,069 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:43:33,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:33 WrapperNode [2020-08-22 16:43:33,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:43:33,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:43:33,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:43:33,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:43:33,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:33" (1/1) ... [2020-08-22 16:43:33,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:33" (1/1) ... [2020-08-22 16:43:33,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:33" (1/1) ... [2020-08-22 16:43:33,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:33" (1/1) ... [2020-08-22 16:43:33,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:33" (1/1) ... [2020-08-22 16:43:33,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:33" (1/1) ... [2020-08-22 16:43:33,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:33" (1/1) ... [2020-08-22 16:43:33,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:43:33,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:43:33,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:43:33,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:43:33,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:33" (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 [2020-08-22 16:43:33,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:43:33,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:43:33,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-22 16:43:33,262 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-08-22 16:43:33,262 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-08-22 16:43:33,262 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-08-22 16:43:33,262 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-08-22 16:43:33,263 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-08-22 16:43:33,263 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-08-22 16:43:33,263 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-08-22 16:43:33,263 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-08-22 16:43:33,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:43:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:43:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-22 16:43:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:43:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-08-22 16:43:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-08-22 16:43:33,270 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-08-22 16:43:33,270 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-08-22 16:43:33,270 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-08-22 16:43:33,270 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-08-22 16:43:33,270 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-08-22 16:43:33,273 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-08-22 16:43:33,273 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:43:33,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:43:33,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:43:33,664 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:43:33,664 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 16:43:33,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:43:33 BoogieIcfgContainer [2020-08-22 16:43:33,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:43:33,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:43:33,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:43:33,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:43:33,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:43:32" (1/3) ... [2020-08-22 16:43:33,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d2a9d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:43:33, skipping insertion in model container [2020-08-22 16:43:33,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:33" (2/3) ... [2020-08-22 16:43:33,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d2a9d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:43:33, skipping insertion in model container [2020-08-22 16:43:33,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:43:33" (3/3) ... [2020-08-22 16:43:33,679 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-08-22 16:43:33,691 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:43:33,698 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:43:33,713 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:43:33,741 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:43:33,741 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:43:33,742 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:43:33,742 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:43:33,742 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:43:33,742 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:43:33,743 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:43:33,743 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:43:33,763 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-22 16:43:33,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 16:43:33,770 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:43:33,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:43:33,771 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:43:33,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:43:33,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1865767033, now seen corresponding path program 1 times [2020-08-22 16:43:33,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:43:33,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065687998] [2020-08-22 16:43:33,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:43:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:33,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:43:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:33,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:43:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:33,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:43:33,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065687998] [2020-08-22 16:43:33,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:43:33,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:43:33,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217037299] [2020-08-22 16:43:33,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:43:33,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:43:33,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:43:33,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:43:34,001 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-22 16:43:34,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:43:34,219 INFO L93 Difference]: Finished difference Result 140 states and 185 transitions. [2020-08-22 16:43:34,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:43:34,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-08-22 16:43:34,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:43:34,236 INFO L225 Difference]: With dead ends: 140 [2020-08-22 16:43:34,236 INFO L226 Difference]: Without dead ends: 70 [2020-08-22 16:43:34,241 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 [2020-08-22 16:43:34,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-22 16:43:34,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2020-08-22 16:43:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-08-22 16:43:34,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-08-22 16:43:34,303 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 16 [2020-08-22 16:43:34,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:43:34,303 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-08-22 16:43:34,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:43:34,304 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-08-22 16:43:34,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 16:43:34,305 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:43:34,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:43:34,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:43:34,306 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:43:34,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:43:34,307 INFO L82 PathProgramCache]: Analyzing trace with hash 6927045, now seen corresponding path program 1 times [2020-08-22 16:43:34,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:43:34,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596256469] [2020-08-22 16:43:34,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:43:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:34,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:43:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:34,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:43:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:34,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:43:34,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596256469] [2020-08-22 16:43:34,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:43:34,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:43:34,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242142867] [2020-08-22 16:43:34,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:43:34,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:43:34,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:43:34,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:43:34,423 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 5 states. [2020-08-22 16:43:34,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:43:34,660 INFO L93 Difference]: Finished difference Result 112 states and 143 transitions. [2020-08-22 16:43:34,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 16:43:34,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-08-22 16:43:34,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:43:34,664 INFO L225 Difference]: With dead ends: 112 [2020-08-22 16:43:34,664 INFO L226 Difference]: Without dead ends: 106 [2020-08-22 16:43:34,666 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 [2020-08-22 16:43:34,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-08-22 16:43:34,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2020-08-22 16:43:34,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-08-22 16:43:34,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 132 transitions. [2020-08-22 16:43:34,691 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 132 transitions. Word has length 17 [2020-08-22 16:43:34,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:43:34,691 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 132 transitions. [2020-08-22 16:43:34,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:43:34,692 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 132 transitions. [2020-08-22 16:43:34,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 16:43:34,693 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:43:34,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:43:34,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:43:34,694 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:43:34,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:43:34,695 INFO L82 PathProgramCache]: Analyzing trace with hash -695621135, now seen corresponding path program 1 times [2020-08-22 16:43:34,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:43:34,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155222327] [2020-08-22 16:43:34,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:43:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:34,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:43:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:34,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:43:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:34,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 16:43:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:43:34,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155222327] [2020-08-22 16:43:34,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:43:34,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:43:34,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888019700] [2020-08-22 16:43:34,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:43:34,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:43:34,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:43:34,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:43:34,857 INFO L87 Difference]: Start difference. First operand 102 states and 132 transitions. Second operand 6 states. [2020-08-22 16:43:35,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:43:35,110 INFO L93 Difference]: Finished difference Result 253 states and 356 transitions. [2020-08-22 16:43:35,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 16:43:35,111 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-08-22 16:43:35,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:43:35,113 INFO L225 Difference]: With dead ends: 253 [2020-08-22 16:43:35,114 INFO L226 Difference]: Without dead ends: 162 [2020-08-22 16:43:35,115 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 [2020-08-22 16:43:35,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-22 16:43:35,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 126. [2020-08-22 16:43:35,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-22 16:43:35,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 169 transitions. [2020-08-22 16:43:35,139 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 169 transitions. Word has length 29 [2020-08-22 16:43:35,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:43:35,140 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 169 transitions. [2020-08-22 16:43:35,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:43:35,140 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 169 transitions. [2020-08-22 16:43:35,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 16:43:35,142 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:43:35,142 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] [2020-08-22 16:43:35,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:43:35,143 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:43:35,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:43:35,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1328709660, now seen corresponding path program 1 times [2020-08-22 16:43:35,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:43:35,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890292465] [2020-08-22 16:43:35,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:43:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:35,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:43:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:35,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:43:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:35,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 16:43:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:35,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-22 16:43:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:35,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:43:35,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890292465] [2020-08-22 16:43:35,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753328311] [2020-08-22 16:43:35,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:43:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:35,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2020-08-22 16:43:35,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:43:35,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:43:35,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:43:35,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 7 [2020-08-22 16:43:35,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74159142] [2020-08-22 16:43:35,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 16:43:35,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:43:35,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 16:43:35,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:43:35,394 INFO L87 Difference]: Start difference. First operand 126 states and 169 transitions. Second operand 7 states. [2020-08-22 16:43:35,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:43:35,682 INFO L93 Difference]: Finished difference Result 350 states and 513 transitions. [2020-08-22 16:43:35,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 16:43:35,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-08-22 16:43:35,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:43:35,687 INFO L225 Difference]: With dead ends: 350 [2020-08-22 16:43:35,687 INFO L226 Difference]: Without dead ends: 235 [2020-08-22 16:43:35,689 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 [2020-08-22 16:43:35,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-22 16:43:35,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 150. [2020-08-22 16:43:35,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-22 16:43:35,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 208 transitions. [2020-08-22 16:43:35,713 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 208 transitions. Word has length 40 [2020-08-22 16:43:35,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:43:35,713 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 208 transitions. [2020-08-22 16:43:35,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 16:43:35,714 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 208 transitions. [2020-08-22 16:43:35,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 16:43:35,716 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:43:35,717 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] [2020-08-22 16:43:35,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:43:35,930 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:43:35,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:43:35,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1520942249, now seen corresponding path program 1 times [2020-08-22 16:43:35,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:43:35,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748569480] [2020-08-22 16:43:35,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:43:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:35,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:43:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:36,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:43:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:36,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 16:43:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:36,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 16:43:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:36,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 16:43:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:36,036 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:43:36,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748569480] [2020-08-22 16:43:36,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270428587] [2020-08-22 16:43:36,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-08-22 16:43:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:36,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2020-08-22 16:43:36,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:43:36,128 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 16:43:36,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-08-22 16:43:36,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 8 [2020-08-22 16:43:36,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056253684] [2020-08-22 16:43:36,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:43:36,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:43:36,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:43:36,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:43:36,131 INFO L87 Difference]: Start difference. First operand 150 states and 208 transitions. Second operand 4 states. [2020-08-22 16:43:36,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:43:36,197 INFO L93 Difference]: Finished difference Result 387 states and 569 transitions. [2020-08-22 16:43:36,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:43:36,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-22 16:43:36,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:43:36,200 INFO L225 Difference]: With dead ends: 387 [2020-08-22 16:43:36,200 INFO L226 Difference]: Without dead ends: 248 [2020-08-22 16:43:36,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:43:36,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-08-22 16:43:36,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 198. [2020-08-22 16:43:36,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-08-22 16:43:36,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 288 transitions. [2020-08-22 16:43:36,220 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 288 transitions. Word has length 51 [2020-08-22 16:43:36,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:43:36,221 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 288 transitions. [2020-08-22 16:43:36,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:43:36,221 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 288 transitions. [2020-08-22 16:43:36,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-22 16:43:36,223 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:43:36,224 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] [2020-08-22 16:43:36,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:43:36,439 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:43:36,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:43:36,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1574199465, now seen corresponding path program 1 times [2020-08-22 16:43:36,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:43:36,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745126503] [2020-08-22 16:43:36,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:43:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:36,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:43:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:36,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:43:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:36,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 16:43:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:36,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 16:43:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:36,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 16:43:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:36,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 16:43:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-22 16:43:36,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745126503] [2020-08-22 16:43:36,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:43:36,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:43:36,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797015124] [2020-08-22 16:43:36,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:43:36,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:43:36,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:43:36,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:43:36,531 INFO L87 Difference]: Start difference. First operand 198 states and 288 transitions. Second operand 6 states. [2020-08-22 16:43:36,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:43:36,678 INFO L93 Difference]: Finished difference Result 366 states and 542 transitions. [2020-08-22 16:43:36,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 16:43:36,679 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-08-22 16:43:36,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:43:36,681 INFO L225 Difference]: With dead ends: 366 [2020-08-22 16:43:36,681 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 16:43:36,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:43:36,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 16:43:36,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 110. [2020-08-22 16:43:36,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-08-22 16:43:36,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 149 transitions. [2020-08-22 16:43:36,694 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 149 transitions. Word has length 63 [2020-08-22 16:43:36,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:43:36,695 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 149 transitions. [2020-08-22 16:43:36,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:43:36,695 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 149 transitions. [2020-08-22 16:43:36,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-22 16:43:36,697 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:43:36,697 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] [2020-08-22 16:43:36,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 16:43:36,698 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:43:36,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:43:36,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1192820603, now seen corresponding path program 1 times [2020-08-22 16:43:36,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:43:36,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354130851] [2020-08-22 16:43:36,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:43:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:43:36,735 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:43:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:43:36,766 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:43:36,807 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:43:36,807 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:43:36,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 16:43:36,833 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 [2020-08-22 16:43:36,835 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 [2020-08-22 16:43:36,835 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 [2020-08-22 16:43:36,836 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 [2020-08-22 16:43:36,836 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 [2020-08-22 16:43:36,837 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 [2020-08-22 16:43:36,837 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 [2020-08-22 16:43:36,838 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 [2020-08-22 16:43:36,838 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 [2020-08-22 16:43:36,838 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 [2020-08-22 16:43:36,839 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 [2020-08-22 16:43:36,840 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 [2020-08-22 16:43:36,840 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 [2020-08-22 16:43:36,841 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 [2020-08-22 16:43:36,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:43:36 BoogieIcfgContainer [2020-08-22 16:43:36,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:43:36,862 INFO L168 Benchmark]: Toolchain (without parser) took 4072.67 ms. Allocated memory was 138.9 MB in the beginning and 248.0 MB in the end (delta: 109.1 MB). Free memory was 101.7 MB in the beginning and 144.4 MB in the end (delta: -42.7 MB). Peak memory consumption was 66.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:43:36,864 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 16:43:36,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.92 ms. Allocated memory is still 138.9 MB. Free memory was 101.5 MB in the beginning and 91.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:43:36,868 INFO L168 Benchmark]: Boogie Preprocessor took 132.14 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 91.1 MB in the beginning and 178.8 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:43:36,869 INFO L168 Benchmark]: RCFGBuilder took 466.94 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 158.6 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:43:36,869 INFO L168 Benchmark]: TraceAbstraction took 3185.30 ms. Allocated memory was 200.8 MB in the beginning and 248.0 MB in the end (delta: 47.2 MB). Free memory was 157.9 MB in the beginning and 144.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 60.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:43:36,877 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 279.92 ms. Allocated memory is still 138.9 MB. Free memory was 101.5 MB in the beginning and 91.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.14 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 91.1 MB in the beginning and 178.8 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 466.94 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 158.6 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3185.30 ms. Allocated memory was 200.8 MB in the beginning and 248.0 MB in the end (delta: 47.2 MB). Free memory was 157.9 MB in the beginning and 144.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 60.7 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 - 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: 3.0s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 416 SDtfs, 459 SDslu, 640 SDs, 0 SdLazy, 515 SolverSat, 179 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred 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, 249 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 370 NumberOfCodeBlocks, 370 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 299 ConstructedInterpolants, 0 QuantifiedInterpolants, 22707 SizeOfPredicates, 2 NumberOfNonLiveVariables, 254 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 36/53 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...