/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 0.2.1-dev-36cd7be [2021-02-23 23:04:49,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:04:49,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:04:49,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 23:04:49,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 23:04:49,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 23:04:49,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 23:04:49,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 23:04:49,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 23:04:49,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 23:04:49,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 23:04:49,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 23:04:49,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:04:49,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:04:49,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:04:49,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:04:49,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:04:49,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:04:49,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:04:49,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:04:49,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:04:49,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:04:49,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:04:49,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:04:49,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 23:04:49,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 23:04:49,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 23:04:49,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 23:04:49,825 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 23:04:49,852 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:04:49,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:04:49,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:04:49,857 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:04:49,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:04:49,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:04:49,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:04:49,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:04:49,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:04:49,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:04:49,860 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:04:49,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:04:49,861 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:04:49,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:04:49,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:04:49,862 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:04:49,862 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:04:49,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:04:49,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:04:49,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:04:49,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:04:49,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:04:49,870 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:04:50,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:04:50,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:04:50,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:04:50,295 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:04:50,296 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:04:50,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2021-02-23 23:04:50,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d37bb2c9/ce9b878a503f4a84b1b910741bae31cb/FLAG40c7c29b5 [2021-02-23 23:04:51,019 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:04:51,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c [2021-02-23 23:04:51,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d37bb2c9/ce9b878a503f4a84b1b910741bae31cb/FLAG40c7c29b5 [2021-02-23 23:04:51,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d37bb2c9/ce9b878a503f4a84b1b910741bae31cb [2021-02-23 23:04:51,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:04:51,370 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:04:51,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:04:51,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:04:51,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:04:51,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:04:51" (1/1) ... [2021-02-23 23:04:51,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb8df5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:51, skipping insertion in model container [2021-02-23 23:04:51,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:04:51" (1/1) ... [2021-02-23 23:04:51,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:04:51,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:04:51,551 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c[298,311] [2021-02-23 23:04:51,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:04:51,597 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:04:51,611 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c[298,311] [2021-02-23 23:04:51,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:04:51,651 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:04:51,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:51 WrapperNode [2021-02-23 23:04:51,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:04:51,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:04:51,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:04:51,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:04:51,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:51" (1/1) ... [2021-02-23 23:04:51,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:51" (1/1) ... [2021-02-23 23:04:51,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:51" (1/1) ... [2021-02-23 23:04:51,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:51" (1/1) ... [2021-02-23 23:04:51,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:51" (1/1) ... [2021-02-23 23:04:51,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:51" (1/1) ... [2021-02-23 23:04:51,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:51" (1/1) ... [2021-02-23 23:04:51,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:04:51,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:04:51,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:04:51,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:04:51,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:51" (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 [2021-02-23 23:04:51,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:04:51,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:04:51,790 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:04:51,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-02-23 23:04:51,790 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-02-23 23:04:51,791 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-02-23 23:04:51,791 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2021-02-23 23:04:51,791 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2021-02-23 23:04:51,791 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2021-02-23 23:04:51,791 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2021-02-23 23:04:51,792 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2021-02-23 23:04:51,792 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2021-02-23 23:04:51,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:04:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:04:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:04:51,793 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:04:51,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:04:51,793 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-02-23 23:04:51,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 23:04:51,793 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-02-23 23:04:51,794 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-02-23 23:04:51,794 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2021-02-23 23:04:51,794 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2021-02-23 23:04:51,794 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2021-02-23 23:04:51,794 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2021-02-23 23:04:51,794 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2021-02-23 23:04:51,795 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2021-02-23 23:04:51,795 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:04:51,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:04:51,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:04:51,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:04:51,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:04:51,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:04:51,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:04:52,286 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:04:52,286 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 23:04:52,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:04:52 BoogieIcfgContainer [2021-02-23 23:04:52,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:04:52,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:04:52,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:04:52,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:04:52,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:04:51" (1/3) ... [2021-02-23 23:04:52,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c93205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:04:52, skipping insertion in model container [2021-02-23 23:04:52,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:51" (2/3) ... [2021-02-23 23:04:52,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c93205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:04:52, skipping insertion in model container [2021-02-23 23:04:52,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:04:52" (3/3) ... [2021-02-23 23:04:52,301 INFO L111 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2021-02-23 23:04:52,315 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:04:52,325 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 23:04:52,377 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 23:04:52,411 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:04:52,412 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:04:52,412 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:04:52,412 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:04:52,412 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:04:52,412 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:04:52,413 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:04:52,413 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:04:52,434 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2021-02-23 23:04:52,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-23 23:04:52,444 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:52,445 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] [2021-02-23 23:04:52,446 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:52,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:52,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1510621862, now seen corresponding path program 1 times [2021-02-23 23:04:52,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:52,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589185505] [2021-02-23 23:04:52,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:52,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:52,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:52,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:52,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:52,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 23:04:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:52,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:52,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:52,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:04:52,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589185505] [2021-02-23 23:04:52,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:04:52,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 23:04:52,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541620576] [2021-02-23 23:04:52,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 23:04:52,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:52,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 23:04:52,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:04:52,815 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 4 states. [2021-02-23 23:04:53,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:53,349 INFO L93 Difference]: Finished difference Result 208 states and 253 transitions. [2021-02-23 23:04:53,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 23:04:53,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2021-02-23 23:04:53,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:53,365 INFO L225 Difference]: With dead ends: 208 [2021-02-23 23:04:53,365 INFO L226 Difference]: Without dead ends: 109 [2021-02-23 23:04:53,371 INFO L677 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 [2021-02-23 23:04:53,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-02-23 23:04:53,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2021-02-23 23:04:53,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2021-02-23 23:04:53,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 119 transitions. [2021-02-23 23:04:53,441 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 119 transitions. Word has length 27 [2021-02-23 23:04:53,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:53,442 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 119 transitions. [2021-02-23 23:04:53,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 23:04:53,443 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 119 transitions. [2021-02-23 23:04:53,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-23 23:04:53,444 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:53,444 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] [2021-02-23 23:04:53,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:04:53,445 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:53,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:53,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1907990770, now seen corresponding path program 1 times [2021-02-23 23:04:53,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:53,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324723105] [2021-02-23 23:04:53,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:53,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:53,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:53,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:53,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:53,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:53,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:53,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:53,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:53,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:53,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:53,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:53,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 23:04:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:53,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:53,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:04:53,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324723105] [2021-02-23 23:04:53,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:04:53,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 23:04:53,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245110500] [2021-02-23 23:04:53,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 23:04:53,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:53,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 23:04:53,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 23:04:53,615 INFO L87 Difference]: Start difference. First operand 104 states and 119 transitions. Second operand 5 states. [2021-02-23 23:04:54,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:54,041 INFO L93 Difference]: Finished difference Result 179 states and 210 transitions. [2021-02-23 23:04:54,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 23:04:54,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2021-02-23 23:04:54,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:54,046 INFO L225 Difference]: With dead ends: 179 [2021-02-23 23:04:54,046 INFO L226 Difference]: Without dead ends: 172 [2021-02-23 23:04:54,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-23 23:04:54,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-02-23 23:04:54,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2021-02-23 23:04:54,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2021-02-23 23:04:54,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 198 transitions. [2021-02-23 23:04:54,101 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 198 transitions. Word has length 29 [2021-02-23 23:04:54,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:54,102 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 198 transitions. [2021-02-23 23:04:54,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 23:04:54,102 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 198 transitions. [2021-02-23 23:04:54,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-23 23:04:54,106 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:54,106 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:54,106 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 23:04:54,106 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:54,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:54,108 INFO L82 PathProgramCache]: Analyzing trace with hash 843041052, now seen corresponding path program 1 times [2021-02-23 23:04:54,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:54,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547587068] [2021-02-23 23:04:54,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:54,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:54,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:54,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:54,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:54,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:54,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 23:04:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:54,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:54,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-02-23 23:04:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:54,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:04:54,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547587068] [2021-02-23 23:04:54,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:04:54,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 23:04:54,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836186558] [2021-02-23 23:04:54,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 23:04:54,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:54,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 23:04:54,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:04:54,335 INFO L87 Difference]: Start difference. First operand 168 states and 198 transitions. Second operand 6 states. [2021-02-23 23:04:54,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:54,645 INFO L93 Difference]: Finished difference Result 419 states and 522 transitions. [2021-02-23 23:04:54,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 23:04:54,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2021-02-23 23:04:54,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:54,649 INFO L225 Difference]: With dead ends: 419 [2021-02-23 23:04:54,650 INFO L226 Difference]: Without dead ends: 273 [2021-02-23 23:04:54,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-02-23 23:04:54,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-02-23 23:04:54,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 208. [2021-02-23 23:04:54,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2021-02-23 23:04:54,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 249 transitions. [2021-02-23 23:04:54,684 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 249 transitions. Word has length 46 [2021-02-23 23:04:54,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:54,685 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 249 transitions. [2021-02-23 23:04:54,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 23:04:54,685 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 249 transitions. [2021-02-23 23:04:54,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-02-23 23:04:54,687 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:54,688 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:54,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 23:04:54,688 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:54,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:54,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1649941128, now seen corresponding path program 1 times [2021-02-23 23:04:54,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:54,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280498797] [2021-02-23 23:04:54,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:54,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:54,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:54,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:54,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:54,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:54,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:54,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:54,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 23:04:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:54,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:54,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 23:04:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:54,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:54,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-23 23:04:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:54,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:54,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:54,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:04:54,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280498797] [2021-02-23 23:04:54,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:04:54,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-23 23:04:54,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932412095] [2021-02-23 23:04:54,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 23:04:54,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:54,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 23:04:54,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:04:54,841 INFO L87 Difference]: Start difference. First operand 208 states and 249 transitions. Second operand 8 states. [2021-02-23 23:04:55,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:55,310 INFO L93 Difference]: Finished difference Result 521 states and 651 transitions. [2021-02-23 23:04:55,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 23:04:55,315 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2021-02-23 23:04:55,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:55,319 INFO L225 Difference]: With dead ends: 521 [2021-02-23 23:04:55,319 INFO L226 Difference]: Without dead ends: 335 [2021-02-23 23:04:55,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-02-23 23:04:55,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-02-23 23:04:55,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 248. [2021-02-23 23:04:55,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2021-02-23 23:04:55,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 304 transitions. [2021-02-23 23:04:55,367 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 304 transitions. Word has length 67 [2021-02-23 23:04:55,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:55,370 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 304 transitions. [2021-02-23 23:04:55,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 23:04:55,370 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 304 transitions. [2021-02-23 23:04:55,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-02-23 23:04:55,379 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:55,379 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:55,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 23:04:55,380 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:55,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:55,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1080587144, now seen corresponding path program 1 times [2021-02-23 23:04:55,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:55,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53512736] [2021-02-23 23:04:55,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:55,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:55,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:55,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:55,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:55,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:55,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:55,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:55,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:55,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:55,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:55,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:55,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:55,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:55,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 23:04:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:55,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:55,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:55,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 23:04:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:55,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:55,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:55,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-23 23:04:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:55,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:55,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:55,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-02-23 23:04:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:55,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:55,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:55,582 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-02-23 23:04:55,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53512736] [2021-02-23 23:04:55,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:04:55,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 23:04:55,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943609707] [2021-02-23 23:04:55,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 23:04:55,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:55,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 23:04:55,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:04:55,594 INFO L87 Difference]: Start difference. First operand 248 states and 304 transitions. Second operand 6 states. [2021-02-23 23:04:56,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:56,220 INFO L93 Difference]: Finished difference Result 860 states and 1094 transitions. [2021-02-23 23:04:56,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 23:04:56,221 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2021-02-23 23:04:56,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:56,226 INFO L225 Difference]: With dead ends: 860 [2021-02-23 23:04:56,227 INFO L226 Difference]: Without dead ends: 634 [2021-02-23 23:04:56,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-02-23 23:04:56,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-02-23 23:04:56,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 401. [2021-02-23 23:04:56,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2021-02-23 23:04:56,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 497 transitions. [2021-02-23 23:04:56,304 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 497 transitions. Word has length 87 [2021-02-23 23:04:56,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:56,304 INFO L480 AbstractCegarLoop]: Abstraction has 401 states and 497 transitions. [2021-02-23 23:04:56,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 23:04:56,305 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 497 transitions. [2021-02-23 23:04:56,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-02-23 23:04:56,307 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:56,307 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:56,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 23:04:56,307 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:56,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:56,308 INFO L82 PathProgramCache]: Analyzing trace with hash 419074158, now seen corresponding path program 1 times [2021-02-23 23:04:56,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:56,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598425785] [2021-02-23 23:04:56,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:56,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:56,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:56,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:56,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:56,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:56,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:56,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 23:04:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:56,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:56,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 23:04:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:56,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:56,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:56,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-23 23:04:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:56,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:56,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-23 23:04:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:56,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:56,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:56,440 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-02-23 23:04:56,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598425785] [2021-02-23 23:04:56,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:04:56,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 23:04:56,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782553147] [2021-02-23 23:04:56,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 23:04:56,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:56,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 23:04:56,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:04:56,443 INFO L87 Difference]: Start difference. First operand 401 states and 497 transitions. Second operand 6 states. [2021-02-23 23:04:56,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:56,990 INFO L93 Difference]: Finished difference Result 935 states and 1172 transitions. [2021-02-23 23:04:56,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 23:04:56,992 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2021-02-23 23:04:56,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:56,996 INFO L225 Difference]: With dead ends: 935 [2021-02-23 23:04:56,996 INFO L226 Difference]: Without dead ends: 556 [2021-02-23 23:04:56,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-02-23 23:04:56,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-02-23 23:04:57,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 407. [2021-02-23 23:04:57,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2021-02-23 23:04:57,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 497 transitions. [2021-02-23 23:04:57,066 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 497 transitions. Word has length 88 [2021-02-23 23:04:57,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:57,067 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 497 transitions. [2021-02-23 23:04:57,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 23:04:57,067 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 497 transitions. [2021-02-23 23:04:57,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-02-23 23:04:57,069 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:57,069 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:57,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 23:04:57,069 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:57,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:57,070 INFO L82 PathProgramCache]: Analyzing trace with hash -699194828, now seen corresponding path program 1 times [2021-02-23 23:04:57,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:57,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229139886] [2021-02-23 23:04:57,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:57,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:57,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:57,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:57,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:57,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:57,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:57,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:57,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:57,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:57,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:57,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:57,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:57,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:57,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 23:04:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:57,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:57,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:57,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 23:04:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:57,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:57,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:57,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-23 23:04:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:57,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:57,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:57,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-02-23 23:04:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:57,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:57,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:57,191 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-23 23:04:57,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229139886] [2021-02-23 23:04:57,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:04:57,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 23:04:57,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664829871] [2021-02-23 23:04:57,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 23:04:57,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:57,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 23:04:57,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:04:57,194 INFO L87 Difference]: Start difference. First operand 407 states and 497 transitions. Second operand 8 states. [2021-02-23 23:04:57,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:57,764 INFO L93 Difference]: Finished difference Result 1178 states and 1517 transitions. [2021-02-23 23:04:57,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 23:04:57,764 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2021-02-23 23:04:57,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:57,774 INFO L225 Difference]: With dead ends: 1178 [2021-02-23 23:04:57,774 INFO L226 Difference]: Without dead ends: 793 [2021-02-23 23:04:57,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-02-23 23:04:57,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2021-02-23 23:04:57,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 487. [2021-02-23 23:04:57,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2021-02-23 23:04:57,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 611 transitions. [2021-02-23 23:04:57,863 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 611 transitions. Word has length 87 [2021-02-23 23:04:57,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:57,864 INFO L480 AbstractCegarLoop]: Abstraction has 487 states and 611 transitions. [2021-02-23 23:04:57,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 23:04:57,864 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 611 transitions. [2021-02-23 23:04:57,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-02-23 23:04:57,871 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:57,871 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:57,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 23:04:57,871 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:57,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:57,872 INFO L82 PathProgramCache]: Analyzing trace with hash 2120170501, now seen corresponding path program 1 times [2021-02-23 23:04:57,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:57,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167532263] [2021-02-23 23:04:57,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:04:57,910 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:04:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:04:57,936 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:04:57,985 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 23:04:57,985 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 23:04:57,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 23:04:58,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:04:58 BoogieIcfgContainer [2021-02-23 23:04:58,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:04:58,124 INFO L168 Benchmark]: Toolchain (without parser) took 6749.24 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 127.7 MB in the beginning and 81.5 MB in the end (delta: 46.2 MB). Peak memory consumption was 125.5 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:58,125 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:04:58,129 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.16 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:58,132 INFO L168 Benchmark]: Boogie Preprocessor took 39.19 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:58,138 INFO L168 Benchmark]: RCFGBuilder took 596.02 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 124.2 MB in the end (delta: -9.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:58,139 INFO L168 Benchmark]: TraceAbstraction took 5814.97 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 123.6 MB in the beginning and 81.5 MB in the end (delta: 42.1 MB). Peak memory consumption was 121.8 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:58,141 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 280.16 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.19 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 596.02 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 124.2 MB in the end (delta: -9.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5814.97 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 123.6 MB in the beginning and 81.5 MB in the end (delta: 42.1 MB). Peak memory consumption was 121.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L11] int ldv_mutex = 1; VAL [\old(ldv_mutex)=55, \old(open_called)=51, ldv_mutex=1, open_called=51] [L13] int open_called = 0; VAL [\old(ldv_mutex)=55, \old(open_called)=51, ldv_mutex=1, open_called=0] [L76] 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] [L77] CALL my_init() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L71] open_called = 0 VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L72] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L77] 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] [L78] 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] [L82] 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] [L83] 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] [L84] CALL misc_open() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L59] COND TRUE __VERIFIER_nondet_int() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, open_called=0] [L61] return 1; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=1, ldv_mutex=1, open_called=0] [L84] 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] [L85] 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] [L78] 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] [L82] 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] [L90] 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] [L91] 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] [L92] CALL misc_read() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L54] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L92] 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] [L93] 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] [L78] 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] [L82] 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] [L90] 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] [L98] 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] [L99] 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] [L100] CALL misc_llseek() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L50] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L100] 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] [L101] 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] [L78] 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] [L82] 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] [L90] 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] [L98] 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] [L106] 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] [L107] 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] [L108] CALL misc_release() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L36] COND FALSE !(\read(open_called)) VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L43] CALL mutex_lock() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L18] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L19] ldv_mutex = 2 VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=2, open_called=0] [L43] RET mutex_lock() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=2, open_called=0] [L44] CALL mutex_lock() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L18] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L18] CALL __blast_assert() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L6] reach_error() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 117 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.5s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 839 SDtfs, 1255 SDslu, 1529 SDs, 0 SdLazy, 1503 SolverSat, 326 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=487occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 849 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 540 NumberOfCodeBlocks, 540 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 424 ConstructedInterpolants, 0 QuantifiedInterpolants, 74688 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 68/74 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...