/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 0.1.25-3af5e1f [2020-09-04 22:05:54,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 22:05:54,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 22:05:54,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 22:05:54,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 22:05:54,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 22:05:54,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 22:05:54,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 22:05:54,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 22:05:54,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 22:05:54,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 22:05:54,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 22:05:54,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 22:05:54,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 22:05:54,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 22:05:54,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 22:05:54,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 22:05:54,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 22:05:54,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 22:05:54,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 22:05:54,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 22:05:54,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 22:05:54,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 22:05:54,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 22:05:54,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 22:05:54,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 22:05:54,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 22:05:54,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 22:05:54,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 22:05:54,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 22:05:54,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 22:05:54,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 22:05:54,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 22:05:54,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 22:05:54,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 22:05:54,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 22:05:54,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 22:05:54,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 22:05:54,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 22:05:54,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 22:05:54,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 22:05:54,480 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 22:05:54,500 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 22:05:54,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 22:05:54,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 22:05:54,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 22:05:54,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 22:05:54,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 22:05:54,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 22:05:54,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 22:05:54,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 22:05:54,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 22:05:54,503 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 22:05:54,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 22:05:54,504 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 22:05:54,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 22:05:54,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 22:05:54,507 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 22:05:54,507 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 22:05:54,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 22:05:54,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 22:05:54,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 22:05:54,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 22:05:54,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 22:05:54,509 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 [2020-09-04 22:05:54,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 22:05:55,012 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 22:05:55,016 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 22:05:55,018 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 22:05:55,018 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 22:05:55,019 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-04 22:05:55,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e88f064c/4777e003fc9f4b609b4413b4da591df4/FLAGc0a73e161 [2020-09-04 22:05:55,638 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 22:05:55,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-04 22:05:55,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e88f064c/4777e003fc9f4b609b4413b4da591df4/FLAGc0a73e161 [2020-09-04 22:05:55,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e88f064c/4777e003fc9f4b609b4413b4da591df4 [2020-09-04 22:05:55,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 22:05:55,975 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 22:05:55,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 22:05:55,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 22:05:55,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 22:05:55,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:05:55" (1/1) ... [2020-09-04 22:05:55,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c7bf19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:55, skipping insertion in model container [2020-09-04 22:05:55,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:05:55" (1/1) ... [2020-09-04 22:05:55,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 22:05:56,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 22:05:56,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:05:56,253 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 22:05:56,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:05:56,293 INFO L208 MainTranslator]: Completed translation [2020-09-04 22:05:56,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:56 WrapperNode [2020-09-04 22:05:56,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 22:05:56,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 22:05:56,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 22:05:56,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 22:05:56,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:56" (1/1) ... [2020-09-04 22:05:56,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:56" (1/1) ... [2020-09-04 22:05:56,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:56" (1/1) ... [2020-09-04 22:05:56,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:56" (1/1) ... [2020-09-04 22:05:56,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:56" (1/1) ... [2020-09-04 22:05:56,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:56" (1/1) ... [2020-09-04 22:05:56,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:56" (1/1) ... [2020-09-04 22:05:56,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 22:05:56,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 22:05:56,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 22:05:56,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 22:05:56,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 22:05:56,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 22:05:56,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 22:05:56,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-04 22:05:56,505 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-09-04 22:05:56,506 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-09-04 22:05:56,506 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-09-04 22:05:56,506 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-09-04 22:05:56,506 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-09-04 22:05:56,506 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-09-04 22:05:56,506 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-09-04 22:05:56,506 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-09-04 22:05:56,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 22:05:56,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 22:05:56,507 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-04 22:05:56,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 22:05:56,507 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-09-04 22:05:56,508 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-09-04 22:05:56,508 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-09-04 22:05:56,508 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-09-04 22:05:56,508 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-09-04 22:05:56,509 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-09-04 22:05:56,509 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-09-04 22:05:56,509 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-09-04 22:05:56,509 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 22:05:56,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 22:05:56,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 22:05:56,857 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 22:05:56,857 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 22:05:56,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:05:56 BoogieIcfgContainer [2020-09-04 22:05:56,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 22:05:56,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 22:05:56,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 22:05:56,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 22:05:56,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 10:05:55" (1/3) ... [2020-09-04 22:05:56,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10682cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:05:56, skipping insertion in model container [2020-09-04 22:05:56,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:56" (2/3) ... [2020-09-04 22:05:56,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10682cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:05:56, skipping insertion in model container [2020-09-04 22:05:56,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:05:56" (3/3) ... [2020-09-04 22:05:56,873 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-09-04 22:05:56,886 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 22:05:56,896 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 22:05:56,918 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 22:05:56,943 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 22:05:56,943 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 22:05:56,943 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 22:05:56,943 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 22:05:56,944 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 22:05:56,944 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 22:05:56,944 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 22:05:56,944 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 22:05:56,966 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-09-04 22:05:56,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 22:05:56,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:05:56,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:05:56,981 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:05:56,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:05:56,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1008214113, now seen corresponding path program 1 times [2020-09-04 22:05:56,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:05:56,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100693433] [2020-09-04 22:05:56,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:05:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:57,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:05:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:57,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 22:05:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:05:57,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100693433] [2020-09-04 22:05:57,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:05:57,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 22:05:57,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102234360] [2020-09-04 22:05:57,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 22:05:57,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:05:57,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 22:05:57,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 22:05:57,296 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 4 states. [2020-09-04 22:05:57,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:05:57,517 INFO L93 Difference]: Finished difference Result 199 states and 244 transitions. [2020-09-04 22:05:57,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 22:05:57,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-04 22:05:57,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:05:57,536 INFO L225 Difference]: With dead ends: 199 [2020-09-04 22:05:57,537 INFO L226 Difference]: Without dead ends: 101 [2020-09-04 22:05:57,542 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 [2020-09-04 22:05:57,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-04 22:05:57,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2020-09-04 22:05:57,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-04 22:05:57,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-09-04 22:05:57,614 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 19 [2020-09-04 22:05:57,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:05:57,615 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-09-04 22:05:57,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 22:05:57,615 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-09-04 22:05:57,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 22:05:57,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:05:57,617 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] [2020-09-04 22:05:57,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 22:05:57,617 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:05:57,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:05:57,618 INFO L82 PathProgramCache]: Analyzing trace with hash 837576233, now seen corresponding path program 1 times [2020-09-04 22:05:57,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:05:57,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458640130] [2020-09-04 22:05:57,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:05:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:57,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:05:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:57,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 22:05:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:57,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:05:57,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458640130] [2020-09-04 22:05:57,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:05:57,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 22:05:57,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149949056] [2020-09-04 22:05:57,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 22:05:57,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:05:57,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 22:05:57,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 22:05:57,722 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 5 states. [2020-09-04 22:05:58,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:05:58,003 INFO L93 Difference]: Finished difference Result 171 states and 202 transitions. [2020-09-04 22:05:58,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 22:05:58,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-04 22:05:58,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:05:58,007 INFO L225 Difference]: With dead ends: 171 [2020-09-04 22:05:58,008 INFO L226 Difference]: Without dead ends: 164 [2020-09-04 22:05:58,009 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 [2020-09-04 22:05:58,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-04 22:05:58,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2020-09-04 22:05:58,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-04 22:05:58,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2020-09-04 22:05:58,061 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 21 [2020-09-04 22:05:58,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:05:58,062 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2020-09-04 22:05:58,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 22:05:58,062 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2020-09-04 22:05:58,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-04 22:05:58,064 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:05:58,064 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] [2020-09-04 22:05:58,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 22:05:58,065 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:05:58,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:05:58,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1006142192, now seen corresponding path program 1 times [2020-09-04 22:05:58,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:05:58,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721202641] [2020-09-04 22:05:58,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:05:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:58,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:05:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:58,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 22:05:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:58,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:05:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:58,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:05:58,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721202641] [2020-09-04 22:05:58,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:05:58,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 22:05:58,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970238539] [2020-09-04 22:05:58,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 22:05:58,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:05:58,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 22:05:58,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 22:05:58,163 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand 6 states. [2020-09-04 22:05:58,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:05:58,441 INFO L93 Difference]: Finished difference Result 411 states and 514 transitions. [2020-09-04 22:05:58,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 22:05:58,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-04 22:05:58,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:05:58,445 INFO L225 Difference]: With dead ends: 411 [2020-09-04 22:05:58,445 INFO L226 Difference]: Without dead ends: 265 [2020-09-04 22:05:58,447 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 [2020-09-04 22:05:58,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-04 22:05:58,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 200. [2020-09-04 22:05:58,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-04 22:05:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 243 transitions. [2020-09-04 22:05:58,480 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 243 transitions. Word has length 38 [2020-09-04 22:05:58,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:05:58,480 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 243 transitions. [2020-09-04 22:05:58,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 22:05:58,481 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 243 transitions. [2020-09-04 22:05:58,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-04 22:05:58,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:05:58,483 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] [2020-09-04 22:05:58,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 22:05:58,484 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:05:58,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:05:58,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1762986505, now seen corresponding path program 1 times [2020-09-04 22:05:58,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:05:58,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278151054] [2020-09-04 22:05:58,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:05:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:58,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:05:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:58,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 22:05:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:58,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-04 22:05:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:58,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 22:05:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:58,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:05:58,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278151054] [2020-09-04 22:05:58,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:05:58,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-04 22:05:58,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037414011] [2020-09-04 22:05:58,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 22:05:58,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:05:58,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 22:05:58,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 22:05:58,658 INFO L87 Difference]: Start difference. First operand 200 states and 243 transitions. Second operand 8 states. [2020-09-04 22:05:59,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:05:59,098 INFO L93 Difference]: Finished difference Result 573 states and 736 transitions. [2020-09-04 22:05:59,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 22:05:59,098 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-09-04 22:05:59,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:05:59,102 INFO L225 Difference]: With dead ends: 573 [2020-09-04 22:05:59,103 INFO L226 Difference]: Without dead ends: 387 [2020-09-04 22:05:59,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-04 22:05:59,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-09-04 22:05:59,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 240. [2020-09-04 22:05:59,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-09-04 22:05:59,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 298 transitions. [2020-09-04 22:05:59,140 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 298 transitions. Word has length 59 [2020-09-04 22:05:59,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:05:59,141 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 298 transitions. [2020-09-04 22:05:59,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 22:05:59,141 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 298 transitions. [2020-09-04 22:05:59,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-04 22:05:59,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:05:59,144 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] [2020-09-04 22:05:59,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 22:05:59,145 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:05:59,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:05:59,146 INFO L82 PathProgramCache]: Analyzing trace with hash -586168855, now seen corresponding path program 1 times [2020-09-04 22:05:59,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:05:59,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932316401] [2020-09-04 22:05:59,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:05:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:59,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:05:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:59,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 22:05:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:59,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-04 22:05:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:59,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-04 22:05:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:59,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 22:05:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:59,290 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-04 22:05:59,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932316401] [2020-09-04 22:05:59,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:05:59,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 22:05:59,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449129647] [2020-09-04 22:05:59,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 22:05:59,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:05:59,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 22:05:59,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 22:05:59,294 INFO L87 Difference]: Start difference. First operand 240 states and 298 transitions. Second operand 8 states. [2020-09-04 22:05:59,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:05:59,718 INFO L93 Difference]: Finished difference Result 733 states and 952 transitions. [2020-09-04 22:05:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 22:05:59,718 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-09-04 22:05:59,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:05:59,729 INFO L225 Difference]: With dead ends: 733 [2020-09-04 22:05:59,729 INFO L226 Difference]: Without dead ends: 507 [2020-09-04 22:05:59,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-04 22:05:59,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-09-04 22:05:59,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 320. [2020-09-04 22:05:59,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-09-04 22:05:59,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 410 transitions. [2020-09-04 22:05:59,783 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 410 transitions. Word has length 79 [2020-09-04 22:05:59,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:05:59,784 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 410 transitions. [2020-09-04 22:05:59,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 22:05:59,786 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 410 transitions. [2020-09-04 22:05:59,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-04 22:05:59,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:05:59,803 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] [2020-09-04 22:05:59,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 22:05:59,804 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:05:59,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:05:59,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1731656998, now seen corresponding path program 1 times [2020-09-04 22:05:59,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:05:59,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554507261] [2020-09-04 22:05:59,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:05:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:59,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:05:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:59,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 22:05:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:59,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-04 22:05:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:59,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-04 22:05:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:59,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-04 22:05:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:59,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-04 22:05:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:59,988 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-04 22:05:59,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554507261] [2020-09-04 22:05:59,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:05:59,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 22:05:59,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750916359] [2020-09-04 22:05:59,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 22:05:59,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:05:59,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 22:05:59,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 22:05:59,991 INFO L87 Difference]: Start difference. First operand 320 states and 410 transitions. Second operand 6 states. [2020-09-04 22:06:00,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:06:00,154 INFO L93 Difference]: Finished difference Result 599 states and 775 transitions. [2020-09-04 22:06:00,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 22:06:00,155 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-09-04 22:06:00,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:06:00,158 INFO L225 Difference]: With dead ends: 599 [2020-09-04 22:06:00,158 INFO L226 Difference]: Without dead ends: 293 [2020-09-04 22:06:00,159 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 [2020-09-04 22:06:00,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-09-04 22:06:00,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 172. [2020-09-04 22:06:00,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-09-04 22:06:00,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 211 transitions. [2020-09-04 22:06:00,179 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 211 transitions. Word has length 101 [2020-09-04 22:06:00,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:06:00,180 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 211 transitions. [2020-09-04 22:06:00,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 22:06:00,180 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 211 transitions. [2020-09-04 22:06:00,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-04 22:06:00,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:06:00,182 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] [2020-09-04 22:06:00,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 22:06:00,183 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:06:00,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:06:00,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1350272370, now seen corresponding path program 1 times [2020-09-04 22:06:00,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:06:00,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672035585] [2020-09-04 22:06:00,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:06:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 22:06:00,208 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 22:06:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 22:06:00,226 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 22:06:00,258 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 22:06:00,258 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 22:06:00,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 22:06:00,291 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 [2020-09-04 22:06:00,293 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 [2020-09-04 22:06:00,293 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 [2020-09-04 22:06:00,294 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 [2020-09-04 22:06:00,295 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 [2020-09-04 22:06:00,295 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 [2020-09-04 22:06:00,295 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 [2020-09-04 22:06:00,296 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 [2020-09-04 22:06:00,296 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 [2020-09-04 22:06:00,297 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 [2020-09-04 22:06:00,297 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 [2020-09-04 22:06:00,298 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 [2020-09-04 22:06:00,298 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 [2020-09-04 22:06:00,299 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 [2020-09-04 22:06:00,299 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 [2020-09-04 22:06:00,300 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 [2020-09-04 22:06:00,300 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 [2020-09-04 22:06:00,300 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 [2020-09-04 22:06:00,301 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 [2020-09-04 22:06:00,301 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 [2020-09-04 22:06:00,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 10:06:00 BoogieIcfgContainer [2020-09-04 22:06:00,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 22:06:00,322 INFO L168 Benchmark]: Toolchain (without parser) took 4345.79 ms. Allocated memory was 146.8 MB in the beginning and 245.9 MB in the end (delta: 99.1 MB). Free memory was 102.3 MB in the beginning and 153.4 MB in the end (delta: -51.1 MB). Peak memory consumption was 48.0 MB. Max. memory is 7.1 GB. [2020-09-04 22:06:00,323 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 22:06:00,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.40 ms. Allocated memory is still 146.8 MB. Free memory was 102.1 MB in the beginning and 91.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-04 22:06:00,325 INFO L168 Benchmark]: Boogie Preprocessor took 125.99 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 91.8 MB in the beginning and 182.0 MB in the end (delta: -90.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-04 22:06:00,326 INFO L168 Benchmark]: RCFGBuilder took 443.52 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 160.6 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-09-04 22:06:00,327 INFO L168 Benchmark]: TraceAbstraction took 3453.46 ms. Allocated memory was 203.9 MB in the beginning and 245.9 MB in the end (delta: 41.9 MB). Free memory was 159.9 MB in the beginning and 153.4 MB in the end (delta: 6.6 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2020-09-04 22:06:00,331 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 317.40 ms. Allocated memory is still 146.8 MB. Free memory was 102.1 MB in the beginning and 91.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.99 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 91.8 MB in the beginning and 182.0 MB in the end (delta: -90.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 443.52 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 160.6 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3453.46 ms. Allocated memory was 203.9 MB in the beginning and 245.9 MB in the end (delta: 41.9 MB). Free memory was 159.9 MB in the beginning and 153.4 MB in the end (delta: 6.6 MB). Peak memory consumption was 48.5 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: 3.3s, 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, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s 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, 0.6s 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...