/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:19:05,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:19:05,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:19:06,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 22:19:06,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 22:19:06,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 22:19:06,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 22:19:06,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 22:19:06,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 22:19:06,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 22:19:06,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 22:19:06,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 22:19:06,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:19:06,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:19:06,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:19:06,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:19:06,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:19:06,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:19:06,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:19:06,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:19:06,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:19:06,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:19:06,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:19:06,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:19:06,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 22:19:06,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 22:19:06,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 22:19:06,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 22:19:06,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 22:19:06,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 22:19:06,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 22:19:06,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 22:19:06,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 22:19:06,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:19:06,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:19:06,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:19:06,091 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 22:19:06,105 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:19:06,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:19:06,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:19:06,107 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:19:06,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:19:06,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:19:06,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:19:06,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:19:06,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:19:06,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:19:06,109 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:19:06,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:19:06,110 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:19:06,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:19:06,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:19:06,111 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:19:06,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:19:06,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:19:06,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:19:06,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:19:06,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:19:06,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:19:06,112 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 22:19:06,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:19:06,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:19:06,432 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:19:06,434 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:19:06,435 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:19:06,435 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-08-22 22:19:06,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c3b46593/bc621c4983084f7896c1def13986b3e3/FLAG1492499bd [2020-08-22 22:19:06,964 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:19:06,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-08-22 22:19:06,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c3b46593/bc621c4983084f7896c1def13986b3e3/FLAG1492499bd [2020-08-22 22:19:07,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c3b46593/bc621c4983084f7896c1def13986b3e3 [2020-08-22 22:19:07,320 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:19:07,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:19:07,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:19:07,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:19:07,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:19:07,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:19:07" (1/1) ... [2020-08-22 22:19:07,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ab86b17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:07, skipping insertion in model container [2020-08-22 22:19:07,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:19:07" (1/1) ... [2020-08-22 22:19:07,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:19:07,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:19:07,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:19:07,573 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:19:07,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:19:07,606 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:19:07,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:07 WrapperNode [2020-08-22 22:19:07,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:19:07,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:19:07,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:19:07,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:19:07,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:07" (1/1) ... [2020-08-22 22:19:07,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:07" (1/1) ... [2020-08-22 22:19:07,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:07" (1/1) ... [2020-08-22 22:19:07,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:07" (1/1) ... [2020-08-22 22:19:07,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:07" (1/1) ... [2020-08-22 22:19:07,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:07" (1/1) ... [2020-08-22 22:19:07,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:07" (1/1) ... [2020-08-22 22:19:07,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:19:07,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:19:07,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:19:07,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:19:07,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:07" (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 22:19:07,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:19:07,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:19:07,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-22 22:19:07,783 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-08-22 22:19:07,783 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-08-22 22:19:07,783 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-08-22 22:19:07,783 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-08-22 22:19:07,783 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-08-22 22:19:07,783 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-08-22 22:19:07,784 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-08-22 22:19:07,784 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-08-22 22:19:07,784 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:19:07,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:19:07,784 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-22 22:19:07,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:19:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-08-22 22:19:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-08-22 22:19:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-08-22 22:19:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-08-22 22:19:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-08-22 22:19:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-08-22 22:19:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-08-22 22:19:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-08-22 22:19:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:19:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:19:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:19:08,179 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:19:08,180 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 22:19:08,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:19:08 BoogieIcfgContainer [2020-08-22 22:19:08,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:19:08,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:19:08,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:19:08,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:19:08,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:19:07" (1/3) ... [2020-08-22 22:19:08,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e82e220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:19:08, skipping insertion in model container [2020-08-22 22:19:08,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:07" (2/3) ... [2020-08-22 22:19:08,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e82e220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:19:08, skipping insertion in model container [2020-08-22 22:19:08,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:19:08" (3/3) ... [2020-08-22 22:19:08,193 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-08-22 22:19:08,204 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:19:08,212 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:19:08,225 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:19:08,246 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:19:08,247 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:19:08,247 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:19:08,247 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:19:08,247 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:19:08,247 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:19:08,247 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:19:08,248 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:19:08,264 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-08-22 22:19:08,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 22:19:08,273 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:08,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:19:08,275 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:08,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:08,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1008214113, now seen corresponding path program 1 times [2020-08-22 22:19:08,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:08,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557278462] [2020-08-22 22:19:08,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:08,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:08,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 22:19:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:08,452 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 22:19:08,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557278462] [2020-08-22 22:19:08,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:19:08,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:19:08,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236136523] [2020-08-22 22:19:08,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:19:08,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:08,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:19:08,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:19:08,480 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 4 states. [2020-08-22 22:19:08,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:08,756 INFO L93 Difference]: Finished difference Result 199 states and 244 transitions. [2020-08-22 22:19:08,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:19:08,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-22 22:19:08,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:08,781 INFO L225 Difference]: With dead ends: 199 [2020-08-22 22:19:08,782 INFO L226 Difference]: Without dead ends: 101 [2020-08-22 22:19:08,790 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 22:19:08,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-08-22 22:19:08,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2020-08-22 22:19:08,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-22 22:19:08,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-08-22 22:19:08,852 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 19 [2020-08-22 22:19:08,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:08,853 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-08-22 22:19:08,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:19:08,854 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-08-22 22:19:08,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 22:19:08,855 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:08,855 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] [2020-08-22 22:19:08,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:19:08,856 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:08,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:08,857 INFO L82 PathProgramCache]: Analyzing trace with hash 837576233, now seen corresponding path program 1 times [2020-08-22 22:19:08,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:08,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012517571] [2020-08-22 22:19:08,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:08,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:08,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 22:19:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:08,957 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 22:19:08,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012517571] [2020-08-22 22:19:08,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:19:08,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 22:19:08,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625546550] [2020-08-22 22:19:08,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 22:19:08,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:08,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 22:19:08,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:19:08,962 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 5 states. [2020-08-22 22:19:09,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:09,248 INFO L93 Difference]: Finished difference Result 171 states and 202 transitions. [2020-08-22 22:19:09,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 22:19:09,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-22 22:19:09,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:09,252 INFO L225 Difference]: With dead ends: 171 [2020-08-22 22:19:09,252 INFO L226 Difference]: Without dead ends: 164 [2020-08-22 22:19:09,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:19:09,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-22 22:19:09,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2020-08-22 22:19:09,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-22 22:19:09,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2020-08-22 22:19:09,311 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 21 [2020-08-22 22:19:09,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:09,312 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2020-08-22 22:19:09,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 22:19:09,312 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2020-08-22 22:19:09,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 22:19:09,315 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:09,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:19:09,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:19:09,316 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:09,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:09,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1006142192, now seen corresponding path program 1 times [2020-08-22 22:19:09,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:09,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401940081] [2020-08-22 22:19:09,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:09,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:09,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 22:19:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:09,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:19:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:09,452 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 22:19:09,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401940081] [2020-08-22 22:19:09,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:19:09,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 22:19:09,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917953244] [2020-08-22 22:19:09,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 22:19:09,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:09,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 22:19:09,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:19:09,455 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand 6 states. [2020-08-22 22:19:09,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:09,745 INFO L93 Difference]: Finished difference Result 411 states and 514 transitions. [2020-08-22 22:19:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 22:19:09,748 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-08-22 22:19:09,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:09,758 INFO L225 Difference]: With dead ends: 411 [2020-08-22 22:19:09,758 INFO L226 Difference]: Without dead ends: 265 [2020-08-22 22:19:09,763 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 22:19:09,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-08-22 22:19:09,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 200. [2020-08-22 22:19:09,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-08-22 22:19:09,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 243 transitions. [2020-08-22 22:19:09,800 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 243 transitions. Word has length 38 [2020-08-22 22:19:09,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:09,801 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 243 transitions. [2020-08-22 22:19:09,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 22:19:09,801 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 243 transitions. [2020-08-22 22:19:09,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 22:19:09,803 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:09,803 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:19:09,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:19:09,804 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:09,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:09,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1762986505, now seen corresponding path program 1 times [2020-08-22 22:19:09,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:09,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016260661] [2020-08-22 22:19:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:09,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:09,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 22:19:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:09,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:19:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:09,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 22:19:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:19:09,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016260661] [2020-08-22 22:19:09,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:19:09,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 22:19:09,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863447696] [2020-08-22 22:19:09,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:19:09,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:09,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:19:09,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:19:09,913 INFO L87 Difference]: Start difference. First operand 200 states and 243 transitions. Second operand 8 states. [2020-08-22 22:19:10,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:10,321 INFO L93 Difference]: Finished difference Result 573 states and 736 transitions. [2020-08-22 22:19:10,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 22:19:10,322 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-08-22 22:19:10,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:10,328 INFO L225 Difference]: With dead ends: 573 [2020-08-22 22:19:10,328 INFO L226 Difference]: Without dead ends: 387 [2020-08-22 22:19:10,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-08-22 22:19:10,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-08-22 22:19:10,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 240. [2020-08-22 22:19:10,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-22 22:19:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 298 transitions. [2020-08-22 22:19:10,380 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 298 transitions. Word has length 59 [2020-08-22 22:19:10,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:10,381 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 298 transitions. [2020-08-22 22:19:10,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:19:10,381 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 298 transitions. [2020-08-22 22:19:10,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 22:19:10,384 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:10,385 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:10,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:19:10,385 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:10,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:10,386 INFO L82 PathProgramCache]: Analyzing trace with hash -586168855, now seen corresponding path program 1 times [2020-08-22 22:19:10,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:10,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551210477] [2020-08-22 22:19:10,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:10,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:10,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 22:19:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:10,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:19:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:10,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 22:19:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:10,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 22:19:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:10,493 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 22:19:10,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551210477] [2020-08-22 22:19:10,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:19:10,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 22:19:10,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478936110] [2020-08-22 22:19:10,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:19:10,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:10,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:19:10,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:19:10,496 INFO L87 Difference]: Start difference. First operand 240 states and 298 transitions. Second operand 8 states. [2020-08-22 22:19:10,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:10,848 INFO L93 Difference]: Finished difference Result 733 states and 952 transitions. [2020-08-22 22:19:10,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 22:19:10,849 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-22 22:19:10,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:10,854 INFO L225 Difference]: With dead ends: 733 [2020-08-22 22:19:10,854 INFO L226 Difference]: Without dead ends: 507 [2020-08-22 22:19:10,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-08-22 22:19:10,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-08-22 22:19:10,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 320. [2020-08-22 22:19:10,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-08-22 22:19:10,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 410 transitions. [2020-08-22 22:19:10,894 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 410 transitions. Word has length 79 [2020-08-22 22:19:10,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:10,895 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 410 transitions. [2020-08-22 22:19:10,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:19:10,895 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 410 transitions. [2020-08-22 22:19:10,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-08-22 22:19:10,897 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:10,898 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 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 22:19:10,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 22:19:10,898 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:10,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:10,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1731656998, now seen corresponding path program 1 times [2020-08-22 22:19:10,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:10,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740775132] [2020-08-22 22:19:10,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:11,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:11,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 22:19:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:11,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 22:19:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:11,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 22:19:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:11,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 22:19:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:11,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 22:19:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-08-22 22:19:11,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740775132] [2020-08-22 22:19:11,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:19:11,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 22:19:11,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188141549] [2020-08-22 22:19:11,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 22:19:11,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:11,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 22:19:11,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:19:11,045 INFO L87 Difference]: Start difference. First operand 320 states and 410 transitions. Second operand 6 states. [2020-08-22 22:19:11,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:11,210 INFO L93 Difference]: Finished difference Result 599 states and 775 transitions. [2020-08-22 22:19:11,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 22:19:11,210 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-08-22 22:19:11,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:11,213 INFO L225 Difference]: With dead ends: 599 [2020-08-22 22:19:11,213 INFO L226 Difference]: Without dead ends: 293 [2020-08-22 22:19:11,215 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 22:19:11,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-08-22 22:19:11,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 172. [2020-08-22 22:19:11,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-08-22 22:19:11,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 211 transitions. [2020-08-22 22:19:11,239 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 211 transitions. Word has length 101 [2020-08-22 22:19:11,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:11,239 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 211 transitions. [2020-08-22 22:19:11,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 22:19:11,240 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 211 transitions. [2020-08-22 22:19:11,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-08-22 22:19:11,241 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:11,241 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 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 22:19:11,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 22:19:11,242 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:11,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:11,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1350272370, now seen corresponding path program 1 times [2020-08-22 22:19:11,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:11,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436047477] [2020-08-22 22:19:11,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 22:19:11,262 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 22:19:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 22:19:11,276 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 22:19:11,305 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 22:19:11,306 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 22:19:11,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 22:19:11,335 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 22:19:11,336 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 22:19:11,337 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 22:19:11,338 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 22:19:11,338 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 22:19:11,338 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 22:19:11,339 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 22:19:11,340 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 22:19:11,340 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 22:19:11,341 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 22:19:11,341 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 22:19:11,341 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 22:19:11,342 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 22:19:11,342 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 22:19:11,343 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 22:19:11,343 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 22:19:11,344 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 22:19:11,344 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 22:19:11,344 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 22:19:11,345 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 22:19:11,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 10:19:11 BoogieIcfgContainer [2020-08-22 22:19:11,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 22:19:11,375 INFO L168 Benchmark]: Toolchain (without parser) took 4052.60 ms. Allocated memory was 140.5 MB in the beginning and 245.4 MB in the end (delta: 104.9 MB). Free memory was 104.6 MB in the beginning and 145.3 MB in the end (delta: -40.7 MB). Peak memory consumption was 64.2 MB. Max. memory is 7.1 GB. [2020-08-22 22:19:11,376 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 22:19:11,380 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.03 ms. Allocated memory is still 140.5 MB. Free memory was 104.4 MB in the beginning and 94.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-22 22:19:11,381 INFO L168 Benchmark]: Boogie Preprocessor took 111.81 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 94.1 MB in the beginning and 182.0 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-08-22 22:19:11,383 INFO L168 Benchmark]: RCFGBuilder took 465.76 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 159.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-08-22 22:19:11,384 INFO L168 Benchmark]: TraceAbstraction took 3185.24 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 159.9 MB in the beginning and 145.3 MB in the end (delta: 14.5 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2020-08-22 22:19:11,391 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 280.03 ms. Allocated memory is still 140.5 MB. Free memory was 104.4 MB in the beginning and 94.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.81 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 94.1 MB in the beginning and 182.0 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 465.76 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 159.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3185.24 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 159.9 MB in the beginning and 145.3 MB in the end (delta: 14.5 MB). Peak memory consumption was 56.0 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 - 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; VAL [\old(ldv_mutex)=5, \old(open_called)=4, ldv_mutex=1, open_called=4] [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 VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, 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() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [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() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, open_called=0] [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() 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] [L80] case 0: 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] [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() 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] [L80] case 0: 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] [L88] case 1: 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] [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() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L80] case 0: 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] [L88] case 1: 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] [L96] case 2: 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] [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, 105 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.0s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 592 SDtfs, 848 SDslu, 1333 SDs, 0 SdLazy, 801 SolverSat, 222 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=320occurred 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: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 529 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 418 NumberOfCodeBlocks, 418 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 311 ConstructedInterpolants, 0 QuantifiedInterpolants, 34423 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 72/78 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...