/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 15:06:04,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 15:06:04,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 15:06:04,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 15:06:04,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 15:06:04,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 15:06:04,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 15:06:04,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 15:06:04,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 15:06:04,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 15:06:04,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 15:06:04,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 15:06:04,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 15:06:04,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 15:06:04,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 15:06:04,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 15:06:04,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 15:06:04,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 15:06:04,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 15:06:04,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 15:06:04,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 15:06:04,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 15:06:04,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 15:06:04,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 15:06:04,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 15:06:04,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 15:06:04,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 15:06:04,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 15:06:04,341 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-10 15:06:04,356 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 15:06:04,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 15:06:04,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-10 15:06:04,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-10 15:06:04,358 INFO L138 SettingsManager]: * Use SBE=true [2020-07-10 15:06:04,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 15:06:04,359 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 15:06:04,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 15:06:04,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 15:06:04,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 15:06:04,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 15:06:04,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 15:06:04,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 15:06:04,360 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 15:06:04,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 15:06:04,360 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 15:06:04,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 15:06:04,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 15:06:04,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-10 15:06:04,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 15:06:04,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 15:06:04,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 15:06:04,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 15:06:04,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-10 15:06:04,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-10 15:06:04,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-10 15:06:04,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-10 15:06:04,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 15:06:04,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-10 15:06:04,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-10 15:06:04,654 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 15:06:04,674 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 15:06:04,677 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 15:06:04,679 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 15:06:04,679 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 15:06:04,680 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-07-10 15:06:04,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6918ecb1/92b223c259004556912f1b1ccf216dad/FLAG84d02d1dc [2020-07-10 15:06:05,211 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 15:06:05,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-07-10 15:06:05,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6918ecb1/92b223c259004556912f1b1ccf216dad/FLAG84d02d1dc [2020-07-10 15:06:05,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6918ecb1/92b223c259004556912f1b1ccf216dad [2020-07-10 15:06:05,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 15:06:05,590 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 15:06:05,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 15:06:05,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 15:06:05,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 15:06:05,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 03:06:05" (1/1) ... [2020-07-10 15:06:05,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f930fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:05, skipping insertion in model container [2020-07-10 15:06:05,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 03:06:05" (1/1) ... [2020-07-10 15:06:05,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 15:06:05,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 15:06:05,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 15:06:05,824 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 15:06:05,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 15:06:05,865 INFO L208 MainTranslator]: Completed translation [2020-07-10 15:06:05,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:05 WrapperNode [2020-07-10 15:06:05,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 15:06:05,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 15:06:05,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 15:06:05,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 15:06:05,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:05" (1/1) ... [2020-07-10 15:06:05,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:05" (1/1) ... [2020-07-10 15:06:05,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:05" (1/1) ... [2020-07-10 15:06:05,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:05" (1/1) ... [2020-07-10 15:06:05,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:05" (1/1) ... [2020-07-10 15:06:05,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:05" (1/1) ... [2020-07-10 15:06:05,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:05" (1/1) ... [2020-07-10 15:06:05,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 15:06:05,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 15:06:05,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 15:06:05,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 15:06:05,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 15:06:06,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 15:06:06,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 15:06:06,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-10 15:06:06,053 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-10 15:06:06,053 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-10 15:06:06,053 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-07-10 15:06:06,053 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-07-10 15:06:06,053 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-07-10 15:06:06,053 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-07-10 15:06:06,053 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-07-10 15:06:06,054 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-07-10 15:06:06,054 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 15:06:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 15:06:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-10 15:06:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-10 15:06:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-10 15:06:06,055 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-10 15:06:06,055 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-07-10 15:06:06,055 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-07-10 15:06:06,055 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-07-10 15:06:06,055 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-07-10 15:06:06,055 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-07-10 15:06:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-07-10 15:06:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 15:06:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 15:06:06,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 15:06:06,537 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 15:06:06,538 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-10 15:06:06,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:06:06 BoogieIcfgContainer [2020-07-10 15:06:06,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 15:06:06,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 15:06:06,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 15:06:06,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 15:06:06,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 03:06:05" (1/3) ... [2020-07-10 15:06:06,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb5a7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:06:06, skipping insertion in model container [2020-07-10 15:06:06,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:06:05" (2/3) ... [2020-07-10 15:06:06,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb5a7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:06:06, skipping insertion in model container [2020-07-10 15:06:06,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:06:06" (3/3) ... [2020-07-10 15:06:06,551 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-07-10 15:06:06,563 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-10 15:06:06,572 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 15:06:06,587 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 15:06:06,617 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 15:06:06,617 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 15:06:06,617 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-10 15:06:06,617 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 15:06:06,618 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 15:06:06,618 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 15:06:06,618 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 15:06:06,618 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 15:06:06,641 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-07-10 15:06:06,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-10 15:06:06,648 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:06:06,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:06:06,650 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:06:06,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:06:06,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1865767033, now seen corresponding path program 1 times [2020-07-10 15:06:06,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:06:06,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430682138] [2020-07-10 15:06:06,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:06:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:06,859 INFO L280 TraceCheckUtils]: 0: Hoare triple {85#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1;~open_called~0 := 0; {77#true} is VALID [2020-07-10 15:06:06,859 INFO L280 TraceCheckUtils]: 1: Hoare triple {77#true} assume true; {77#true} is VALID [2020-07-10 15:06:06,860 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {77#true} {77#true} #164#return; {77#true} is VALID [2020-07-10 15:06:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:06,883 INFO L280 TraceCheckUtils]: 0: Hoare triple {86#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0;#res := 0; {77#true} is VALID [2020-07-10 15:06:06,883 INFO L280 TraceCheckUtils]: 1: Hoare triple {77#true} assume true; {77#true} is VALID [2020-07-10 15:06:06,884 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {77#true} {77#true} #148#return; {77#true} is VALID [2020-07-10 15:06:06,886 INFO L263 TraceCheckUtils]: 0: Hoare triple {77#true} call ULTIMATE.init(); {85#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} is VALID [2020-07-10 15:06:06,886 INFO L280 TraceCheckUtils]: 1: Hoare triple {85#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1;~open_called~0 := 0; {77#true} is VALID [2020-07-10 15:06:06,887 INFO L280 TraceCheckUtils]: 2: Hoare triple {77#true} assume true; {77#true} is VALID [2020-07-10 15:06:06,887 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {77#true} {77#true} #164#return; {77#true} is VALID [2020-07-10 15:06:06,887 INFO L263 TraceCheckUtils]: 4: Hoare triple {77#true} call #t~ret12 := main(); {77#true} is VALID [2020-07-10 15:06:06,888 INFO L280 TraceCheckUtils]: 5: Hoare triple {77#true} ~ldv_s_misc_fops_file_operations~0 := 0; {77#true} is VALID [2020-07-10 15:06:06,889 INFO L263 TraceCheckUtils]: 6: Hoare triple {77#true} call #t~ret1 := my_init(); {86#(= ~open_called~0 |old(~open_called~0)|)} is VALID [2020-07-10 15:06:06,890 INFO L280 TraceCheckUtils]: 7: Hoare triple {86#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0;#res := 0; {77#true} is VALID [2020-07-10 15:06:06,890 INFO L280 TraceCheckUtils]: 8: Hoare triple {77#true} assume true; {77#true} is VALID [2020-07-10 15:06:06,891 INFO L275 TraceCheckUtils]: 9: Hoare quadruple {77#true} {77#true} #148#return; {77#true} is VALID [2020-07-10 15:06:06,891 INFO L280 TraceCheckUtils]: 10: Hoare triple {77#true} assume -2147483648 <= #t~ret1 && #t~ret1 <= 2147483647;havoc #t~ret1; {77#true} is VALID [2020-07-10 15:06:06,892 INFO L280 TraceCheckUtils]: 11: Hoare triple {77#true} assume !true; {78#false} is VALID [2020-07-10 15:06:06,893 INFO L263 TraceCheckUtils]: 12: Hoare triple {78#false} call check_final_state(); {78#false} is VALID [2020-07-10 15:06:06,893 INFO L280 TraceCheckUtils]: 13: Hoare triple {78#false} assume !(1 == ~ldv_mutex~0); {78#false} is VALID [2020-07-10 15:06:06,894 INFO L263 TraceCheckUtils]: 14: Hoare triple {78#false} call __blast_assert(); {78#false} is VALID [2020-07-10 15:06:06,894 INFO L280 TraceCheckUtils]: 15: Hoare triple {78#false} assume !false; {78#false} is VALID [2020-07-10 15:06:06,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 15:06:06,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430682138] [2020-07-10 15:06:06,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 15:06:06,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-10 15:06:06,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017184258] [2020-07-10 15:06:06,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-07-10 15:06:06,909 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 15:06:06,914 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-10 15:06:06,948 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:06:06,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-10 15:06:06,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 15:06:06,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-10 15:06:06,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-10 15:06:06,961 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-07-10 15:06:07,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:07,458 INFO L93 Difference]: Finished difference Result 140 states and 185 transitions. [2020-07-10 15:06:07,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-10 15:06:07,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-07-10 15:06:07,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 15:06:07,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-10 15:06:07,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 185 transitions. [2020-07-10 15:06:07,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-10 15:06:07,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 185 transitions. [2020-07-10 15:06:07,520 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 185 transitions. [2020-07-10 15:06:07,770 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 185 edges. 185 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:06:07,786 INFO L225 Difference]: With dead ends: 140 [2020-07-10 15:06:07,786 INFO L226 Difference]: Without dead ends: 70 [2020-07-10 15:06:07,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-10 15:06:07,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-10 15:06:07,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2020-07-10 15:06:07,882 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 15:06:07,883 INFO L82 GeneralOperation]: Start isEquivalent. First operand 70 states. Second operand 65 states. [2020-07-10 15:06:07,884 INFO L74 IsIncluded]: Start isIncluded. First operand 70 states. Second operand 65 states. [2020-07-10 15:06:07,884 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 65 states. [2020-07-10 15:06:07,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:07,893 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2020-07-10 15:06:07,893 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2020-07-10 15:06:07,895 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:06:07,895 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:06:07,895 INFO L74 IsIncluded]: Start isIncluded. First operand 65 states. Second operand 70 states. [2020-07-10 15:06:07,896 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 70 states. [2020-07-10 15:06:07,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:07,903 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2020-07-10 15:06:07,903 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2020-07-10 15:06:07,904 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:06:07,905 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:06:07,905 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 15:06:07,905 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 15:06:07,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-10 15:06:07,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-07-10 15:06:07,913 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 16 [2020-07-10 15:06:07,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 15:06:07,913 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-07-10 15:06:07,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-10 15:06:07,914 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-07-10 15:06:07,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-10 15:06:07,915 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:06:07,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:06:07,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 15:06:07,915 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:06:07,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:06:07,916 INFO L82 PathProgramCache]: Analyzing trace with hash 6927045, now seen corresponding path program 1 times [2020-07-10 15:06:07,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:06:07,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287088740] [2020-07-10 15:06:07,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:06:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:08,016 INFO L280 TraceCheckUtils]: 0: Hoare triple {521#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1;~open_called~0 := 0; {517#(= 1 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:08,017 INFO L280 TraceCheckUtils]: 1: Hoare triple {517#(= 1 ~ldv_mutex~0)} assume true; {517#(= 1 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:08,018 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {517#(= 1 ~ldv_mutex~0)} {512#true} #164#return; {517#(= 1 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:08,035 INFO L280 TraceCheckUtils]: 0: Hoare triple {522#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0;#res := 0; {512#true} is VALID [2020-07-10 15:06:08,035 INFO L280 TraceCheckUtils]: 1: Hoare triple {512#true} assume true; {512#true} is VALID [2020-07-10 15:06:08,036 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {512#true} {517#(= 1 ~ldv_mutex~0)} #148#return; {517#(= 1 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:08,038 INFO L263 TraceCheckUtils]: 0: Hoare triple {512#true} call ULTIMATE.init(); {521#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} is VALID [2020-07-10 15:06:08,039 INFO L280 TraceCheckUtils]: 1: Hoare triple {521#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1;~open_called~0 := 0; {517#(= 1 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:08,040 INFO L280 TraceCheckUtils]: 2: Hoare triple {517#(= 1 ~ldv_mutex~0)} assume true; {517#(= 1 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:08,041 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {517#(= 1 ~ldv_mutex~0)} {512#true} #164#return; {517#(= 1 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:08,043 INFO L263 TraceCheckUtils]: 4: Hoare triple {517#(= 1 ~ldv_mutex~0)} call #t~ret12 := main(); {517#(= 1 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:08,045 INFO L280 TraceCheckUtils]: 5: Hoare triple {517#(= 1 ~ldv_mutex~0)} ~ldv_s_misc_fops_file_operations~0 := 0; {517#(= 1 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:08,047 INFO L263 TraceCheckUtils]: 6: Hoare triple {517#(= 1 ~ldv_mutex~0)} call #t~ret1 := my_init(); {522#(= ~open_called~0 |old(~open_called~0)|)} is VALID [2020-07-10 15:06:08,047 INFO L280 TraceCheckUtils]: 7: Hoare triple {522#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0;#res := 0; {512#true} is VALID [2020-07-10 15:06:08,047 INFO L280 TraceCheckUtils]: 8: Hoare triple {512#true} assume true; {512#true} is VALID [2020-07-10 15:06:08,049 INFO L275 TraceCheckUtils]: 9: Hoare quadruple {512#true} {517#(= 1 ~ldv_mutex~0)} #148#return; {517#(= 1 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:08,049 INFO L280 TraceCheckUtils]: 10: Hoare triple {517#(= 1 ~ldv_mutex~0)} assume -2147483648 <= #t~ret1 && #t~ret1 <= 2147483647;havoc #t~ret1; {517#(= 1 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:08,050 INFO L280 TraceCheckUtils]: 11: Hoare triple {517#(= 1 ~ldv_mutex~0)} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {517#(= 1 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:08,051 INFO L280 TraceCheckUtils]: 12: Hoare triple {517#(= 1 ~ldv_mutex~0)} assume !(0 != #t~nondet2);havoc #t~nondet2; {517#(= 1 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:08,052 INFO L263 TraceCheckUtils]: 13: Hoare triple {517#(= 1 ~ldv_mutex~0)} call check_final_state(); {517#(= 1 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:08,053 INFO L280 TraceCheckUtils]: 14: Hoare triple {517#(= 1 ~ldv_mutex~0)} assume !(1 == ~ldv_mutex~0); {513#false} is VALID [2020-07-10 15:06:08,053 INFO L263 TraceCheckUtils]: 15: Hoare triple {513#false} call __blast_assert(); {513#false} is VALID [2020-07-10 15:06:08,054 INFO L280 TraceCheckUtils]: 16: Hoare triple {513#false} assume !false; {513#false} is VALID [2020-07-10 15:06:08,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 15:06:08,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287088740] [2020-07-10 15:06:08,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 15:06:08,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-10 15:06:08,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327597500] [2020-07-10 15:06:08,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-10 15:06:08,059 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 15:06:08,059 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-10 15:06:08,081 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:06:08,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-10 15:06:08,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 15:06:08,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-10 15:06:08,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-10 15:06:08,082 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 5 states. [2020-07-10 15:06:08,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:08,703 INFO L93 Difference]: Finished difference Result 112 states and 143 transitions. [2020-07-10 15:06:08,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-10 15:06:08,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-10 15:06:08,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 15:06:08,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 15:06:08,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2020-07-10 15:06:08,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-10 15:06:08,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2020-07-10 15:06:08,714 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 143 transitions. [2020-07-10 15:06:08,921 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 143 edges. 143 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:06:08,926 INFO L225 Difference]: With dead ends: 112 [2020-07-10 15:06:08,926 INFO L226 Difference]: Without dead ends: 106 [2020-07-10 15:06:08,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-10 15:06:08,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-10 15:06:08,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2020-07-10 15:06:08,997 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 15:06:08,997 INFO L82 GeneralOperation]: Start isEquivalent. First operand 106 states. Second operand 102 states. [2020-07-10 15:06:08,997 INFO L74 IsIncluded]: Start isIncluded. First operand 106 states. Second operand 102 states. [2020-07-10 15:06:08,997 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 102 states. [2020-07-10 15:06:09,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:09,005 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2020-07-10 15:06:09,005 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 136 transitions. [2020-07-10 15:06:09,007 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:06:09,007 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:06:09,007 INFO L74 IsIncluded]: Start isIncluded. First operand 102 states. Second operand 106 states. [2020-07-10 15:06:09,007 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 106 states. [2020-07-10 15:06:09,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:09,014 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2020-07-10 15:06:09,014 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 136 transitions. [2020-07-10 15:06:09,016 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:06:09,016 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:06:09,016 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 15:06:09,017 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 15:06:09,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-07-10 15:06:09,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 132 transitions. [2020-07-10 15:06:09,023 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 132 transitions. Word has length 17 [2020-07-10 15:06:09,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 15:06:09,023 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 132 transitions. [2020-07-10 15:06:09,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-10 15:06:09,023 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 132 transitions. [2020-07-10 15:06:09,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-10 15:06:09,025 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:06:09,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:06:09,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 15:06:09,025 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:06:09,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:06:09,026 INFO L82 PathProgramCache]: Analyzing trace with hash -695621135, now seen corresponding path program 1 times [2020-07-10 15:06:09,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:06:09,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355890309] [2020-07-10 15:06:09,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:06:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:09,110 INFO L280 TraceCheckUtils]: 0: Hoare triple {1055#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1;~open_called~0 := 0; {1042#true} is VALID [2020-07-10 15:06:09,110 INFO L280 TraceCheckUtils]: 1: Hoare triple {1042#true} assume true; {1042#true} is VALID [2020-07-10 15:06:09,110 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {1042#true} {1042#true} #164#return; {1042#true} is VALID [2020-07-10 15:06:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:09,130 INFO L280 TraceCheckUtils]: 0: Hoare triple {1056#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0;#res := 0; {1042#true} is VALID [2020-07-10 15:06:09,130 INFO L280 TraceCheckUtils]: 1: Hoare triple {1042#true} assume true; {1042#true} is VALID [2020-07-10 15:06:09,132 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {1042#true} {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #148#return; {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:09,150 INFO L280 TraceCheckUtils]: 0: Hoare triple {1057#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} assume 1 == ~ldv_mutex~0; {1042#true} is VALID [2020-07-10 15:06:09,150 INFO L280 TraceCheckUtils]: 1: Hoare triple {1042#true} ~ldv_mutex~0 := 2; {1042#true} is VALID [2020-07-10 15:06:09,151 INFO L280 TraceCheckUtils]: 2: Hoare triple {1042#true} assume true; {1042#true} is VALID [2020-07-10 15:06:09,151 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1042#true} {1043#false} #138#return; {1043#false} is VALID [2020-07-10 15:06:09,152 INFO L263 TraceCheckUtils]: 0: Hoare triple {1042#true} call ULTIMATE.init(); {1055#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} is VALID [2020-07-10 15:06:09,152 INFO L280 TraceCheckUtils]: 1: Hoare triple {1055#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1;~open_called~0 := 0; {1042#true} is VALID [2020-07-10 15:06:09,153 INFO L280 TraceCheckUtils]: 2: Hoare triple {1042#true} assume true; {1042#true} is VALID [2020-07-10 15:06:09,153 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1042#true} {1042#true} #164#return; {1042#true} is VALID [2020-07-10 15:06:09,153 INFO L263 TraceCheckUtils]: 4: Hoare triple {1042#true} call #t~ret12 := main(); {1042#true} is VALID [2020-07-10 15:06:09,154 INFO L280 TraceCheckUtils]: 5: Hoare triple {1042#true} ~ldv_s_misc_fops_file_operations~0 := 0; {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:09,155 INFO L263 TraceCheckUtils]: 6: Hoare triple {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} call #t~ret1 := my_init(); {1056#(= ~open_called~0 |old(~open_called~0)|)} is VALID [2020-07-10 15:06:09,155 INFO L280 TraceCheckUtils]: 7: Hoare triple {1056#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0;#res := 0; {1042#true} is VALID [2020-07-10 15:06:09,156 INFO L280 TraceCheckUtils]: 8: Hoare triple {1042#true} assume true; {1042#true} is VALID [2020-07-10 15:06:09,157 INFO L275 TraceCheckUtils]: 9: Hoare quadruple {1042#true} {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #148#return; {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:09,157 INFO L280 TraceCheckUtils]: 10: Hoare triple {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume -2147483648 <= #t~ret1 && #t~ret1 <= 2147483647;havoc #t~ret1; {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:09,158 INFO L280 TraceCheckUtils]: 11: Hoare triple {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:09,159 INFO L280 TraceCheckUtils]: 12: Hoare triple {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume !!(0 != #t~nondet2);havoc #t~nondet2;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;#t~switch4 := 0 == #t~nondet3; {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:09,160 INFO L280 TraceCheckUtils]: 13: Hoare triple {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume !#t~switch4;#t~switch4 := #t~switch4 || 1 == #t~nondet3; {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:09,160 INFO L280 TraceCheckUtils]: 14: Hoare triple {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume !#t~switch4;#t~switch4 := #t~switch4 || 2 == #t~nondet3; {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:09,161 INFO L280 TraceCheckUtils]: 15: Hoare triple {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume !#t~switch4;#t~switch4 := #t~switch4 || 3 == #t~nondet3; {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:09,162 INFO L280 TraceCheckUtils]: 16: Hoare triple {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume #t~switch4; {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:09,162 INFO L280 TraceCheckUtils]: 17: Hoare triple {1047#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume 3 == ~ldv_s_misc_fops_file_operations~0; {1043#false} is VALID [2020-07-10 15:06:09,163 INFO L263 TraceCheckUtils]: 18: Hoare triple {1043#false} call #t~ret11 := misc_release(); {1043#false} is VALID [2020-07-10 15:06:09,163 INFO L280 TraceCheckUtils]: 19: Hoare triple {1043#false} assume 0 != ~open_called~0; {1043#false} is VALID [2020-07-10 15:06:09,163 INFO L263 TraceCheckUtils]: 20: Hoare triple {1043#false} call mutex_lock(); {1057#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} is VALID [2020-07-10 15:06:09,164 INFO L280 TraceCheckUtils]: 21: Hoare triple {1057#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} assume 1 == ~ldv_mutex~0; {1042#true} is VALID [2020-07-10 15:06:09,164 INFO L280 TraceCheckUtils]: 22: Hoare triple {1042#true} ~ldv_mutex~0 := 2; {1042#true} is VALID [2020-07-10 15:06:09,164 INFO L280 TraceCheckUtils]: 23: Hoare triple {1042#true} assume true; {1042#true} is VALID [2020-07-10 15:06:09,164 INFO L275 TraceCheckUtils]: 24: Hoare quadruple {1042#true} {1043#false} #138#return; {1043#false} is VALID [2020-07-10 15:06:09,165 INFO L263 TraceCheckUtils]: 25: Hoare triple {1043#false} call mutex_unlock(); {1043#false} is VALID [2020-07-10 15:06:09,165 INFO L280 TraceCheckUtils]: 26: Hoare triple {1043#false} assume !(2 == ~ldv_mutex~0); {1043#false} is VALID [2020-07-10 15:06:09,165 INFO L263 TraceCheckUtils]: 27: Hoare triple {1043#false} call __blast_assert(); {1043#false} is VALID [2020-07-10 15:06:09,166 INFO L280 TraceCheckUtils]: 28: Hoare triple {1043#false} assume !false; {1043#false} is VALID [2020-07-10 15:06:09,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 15:06:09,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355890309] [2020-07-10 15:06:09,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 15:06:09,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-10 15:06:09,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855920155] [2020-07-10 15:06:09,169 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-07-10 15:06:09,169 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 15:06:09,170 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-10 15:06:09,200 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:06:09,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-10 15:06:09,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 15:06:09,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-10 15:06:09,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-10 15:06:09,201 INFO L87 Difference]: Start difference. First operand 102 states and 132 transitions. Second operand 6 states. [2020-07-10 15:06:09,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:09,924 INFO L93 Difference]: Finished difference Result 253 states and 356 transitions. [2020-07-10 15:06:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-10 15:06:09,925 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-07-10 15:06:09,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 15:06:09,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-10 15:06:09,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 232 transitions. [2020-07-10 15:06:09,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-10 15:06:09,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 232 transitions. [2020-07-10 15:06:09,939 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 232 transitions. [2020-07-10 15:06:10,196 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 232 edges. 232 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:06:10,205 INFO L225 Difference]: With dead ends: 253 [2020-07-10 15:06:10,205 INFO L226 Difference]: Without dead ends: 162 [2020-07-10 15:06:10,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-10 15:06:10,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-07-10 15:06:10,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 126. [2020-07-10 15:06:10,304 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 15:06:10,304 INFO L82 GeneralOperation]: Start isEquivalent. First operand 162 states. Second operand 126 states. [2020-07-10 15:06:10,304 INFO L74 IsIncluded]: Start isIncluded. First operand 162 states. Second operand 126 states. [2020-07-10 15:06:10,304 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 126 states. [2020-07-10 15:06:10,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:10,315 INFO L93 Difference]: Finished difference Result 162 states and 226 transitions. [2020-07-10 15:06:10,316 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 226 transitions. [2020-07-10 15:06:10,317 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:06:10,317 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:06:10,317 INFO L74 IsIncluded]: Start isIncluded. First operand 126 states. Second operand 162 states. [2020-07-10 15:06:10,318 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 162 states. [2020-07-10 15:06:10,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:10,327 INFO L93 Difference]: Finished difference Result 162 states and 226 transitions. [2020-07-10 15:06:10,327 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 226 transitions. [2020-07-10 15:06:10,328 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:06:10,328 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:06:10,329 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 15:06:10,329 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 15:06:10,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-10 15:06:10,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 169 transitions. [2020-07-10 15:06:10,335 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 169 transitions. Word has length 29 [2020-07-10 15:06:10,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 15:06:10,336 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 169 transitions. [2020-07-10 15:06:10,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-10 15:06:10,336 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 169 transitions. [2020-07-10 15:06:10,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-10 15:06:10,337 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:06:10,337 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:06:10,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-10 15:06:10,338 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:06:10,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:06:10,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1328709660, now seen corresponding path program 1 times [2020-07-10 15:06:10,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:06:10,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457004849] [2020-07-10 15:06:10,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:06:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:10,403 INFO L280 TraceCheckUtils]: 0: Hoare triple {1919#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1;~open_called~0 := 0; {1901#true} is VALID [2020-07-10 15:06:10,404 INFO L280 TraceCheckUtils]: 1: Hoare triple {1901#true} assume true; {1901#true} is VALID [2020-07-10 15:06:10,404 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {1901#true} {1901#true} #164#return; {1901#true} is VALID [2020-07-10 15:06:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:10,417 INFO L280 TraceCheckUtils]: 0: Hoare triple {1920#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0;#res := 0; {1901#true} is VALID [2020-07-10 15:06:10,417 INFO L280 TraceCheckUtils]: 1: Hoare triple {1901#true} assume true; {1901#true} is VALID [2020-07-10 15:06:10,418 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {1901#true} {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #148#return; {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:10,436 INFO L280 TraceCheckUtils]: 0: Hoare triple {1920#(= ~open_called~0 |old(~open_called~0)|)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {1901#true} is VALID [2020-07-10 15:06:10,436 INFO L280 TraceCheckUtils]: 1: Hoare triple {1901#true} assume 0 != #t~nondet0;havoc #t~nondet0;#res := 1; {1901#true} is VALID [2020-07-10 15:06:10,437 INFO L280 TraceCheckUtils]: 2: Hoare triple {1901#true} assume true; {1901#true} is VALID [2020-07-10 15:06:10,438 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1901#true} {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #150#return; {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:10,472 INFO L280 TraceCheckUtils]: 0: Hoare triple {1921#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} assume 1 == ~ldv_mutex~0; {1901#true} is VALID [2020-07-10 15:06:10,473 INFO L280 TraceCheckUtils]: 1: Hoare triple {1901#true} ~ldv_mutex~0 := 2; {1901#true} is VALID [2020-07-10 15:06:10,474 INFO L280 TraceCheckUtils]: 2: Hoare triple {1901#true} assume true; {1901#true} is VALID [2020-07-10 15:06:10,474 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1901#true} {1902#false} #138#return; {1902#false} is VALID [2020-07-10 15:06:10,477 INFO L263 TraceCheckUtils]: 0: Hoare triple {1901#true} call ULTIMATE.init(); {1919#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} is VALID [2020-07-10 15:06:10,477 INFO L280 TraceCheckUtils]: 1: Hoare triple {1919#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1;~open_called~0 := 0; {1901#true} is VALID [2020-07-10 15:06:10,478 INFO L280 TraceCheckUtils]: 2: Hoare triple {1901#true} assume true; {1901#true} is VALID [2020-07-10 15:06:10,478 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1901#true} {1901#true} #164#return; {1901#true} is VALID [2020-07-10 15:06:10,478 INFO L263 TraceCheckUtils]: 4: Hoare triple {1901#true} call #t~ret12 := main(); {1901#true} is VALID [2020-07-10 15:06:10,479 INFO L280 TraceCheckUtils]: 5: Hoare triple {1901#true} ~ldv_s_misc_fops_file_operations~0 := 0; {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:10,480 INFO L263 TraceCheckUtils]: 6: Hoare triple {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} call #t~ret1 := my_init(); {1920#(= ~open_called~0 |old(~open_called~0)|)} is VALID [2020-07-10 15:06:10,481 INFO L280 TraceCheckUtils]: 7: Hoare triple {1920#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0;#res := 0; {1901#true} is VALID [2020-07-10 15:06:10,481 INFO L280 TraceCheckUtils]: 8: Hoare triple {1901#true} assume true; {1901#true} is VALID [2020-07-10 15:06:10,482 INFO L275 TraceCheckUtils]: 9: Hoare quadruple {1901#true} {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #148#return; {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:10,482 INFO L280 TraceCheckUtils]: 10: Hoare triple {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume -2147483648 <= #t~ret1 && #t~ret1 <= 2147483647;havoc #t~ret1; {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:10,483 INFO L280 TraceCheckUtils]: 11: Hoare triple {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:10,483 INFO L280 TraceCheckUtils]: 12: Hoare triple {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume !!(0 != #t~nondet2);havoc #t~nondet2;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;#t~switch4 := 0 == #t~nondet3; {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:10,484 INFO L280 TraceCheckUtils]: 13: Hoare triple {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume #t~switch4; {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:10,485 INFO L280 TraceCheckUtils]: 14: Hoare triple {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume 0 == ~ldv_s_misc_fops_file_operations~0; {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:10,485 INFO L263 TraceCheckUtils]: 15: Hoare triple {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} call #t~ret5 := misc_open(); {1920#(= ~open_called~0 |old(~open_called~0)|)} is VALID [2020-07-10 15:06:10,486 INFO L280 TraceCheckUtils]: 16: Hoare triple {1920#(= ~open_called~0 |old(~open_called~0)|)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {1901#true} is VALID [2020-07-10 15:06:10,486 INFO L280 TraceCheckUtils]: 17: Hoare triple {1901#true} assume 0 != #t~nondet0;havoc #t~nondet0;#res := 1; {1901#true} is VALID [2020-07-10 15:06:10,486 INFO L280 TraceCheckUtils]: 18: Hoare triple {1901#true} assume true; {1901#true} is VALID [2020-07-10 15:06:10,487 INFO L275 TraceCheckUtils]: 19: Hoare quadruple {1901#true} {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #150#return; {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:10,489 INFO L280 TraceCheckUtils]: 20: Hoare triple {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume -2147483648 <= #t~ret5 && #t~ret5 <= 2147483647;havoc #t~ret5;#t~post6 := ~ldv_s_misc_fops_file_operations~0;~ldv_s_misc_fops_file_operations~0 := 1 + #t~post6;havoc #t~post6; {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:10,489 INFO L280 TraceCheckUtils]: 21: Hoare triple {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} havoc #t~switch4;havoc #t~nondet3; {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:10,490 INFO L280 TraceCheckUtils]: 22: Hoare triple {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:10,492 INFO L280 TraceCheckUtils]: 23: Hoare triple {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume !!(0 != #t~nondet2);havoc #t~nondet2;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;#t~switch4 := 0 == #t~nondet3; {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:10,495 INFO L280 TraceCheckUtils]: 24: Hoare triple {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume !#t~switch4;#t~switch4 := #t~switch4 || 1 == #t~nondet3; {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:10,496 INFO L280 TraceCheckUtils]: 25: Hoare triple {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume !#t~switch4;#t~switch4 := #t~switch4 || 2 == #t~nondet3; {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:10,497 INFO L280 TraceCheckUtils]: 26: Hoare triple {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume !#t~switch4;#t~switch4 := #t~switch4 || 3 == #t~nondet3; {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:10,498 INFO L280 TraceCheckUtils]: 27: Hoare triple {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume #t~switch4; {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:10,498 INFO L280 TraceCheckUtils]: 28: Hoare triple {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume 3 == ~ldv_s_misc_fops_file_operations~0; {1902#false} is VALID [2020-07-10 15:06:10,499 INFO L263 TraceCheckUtils]: 29: Hoare triple {1902#false} call #t~ret11 := misc_release(); {1902#false} is VALID [2020-07-10 15:06:10,499 INFO L280 TraceCheckUtils]: 30: Hoare triple {1902#false} assume 0 != ~open_called~0; {1902#false} is VALID [2020-07-10 15:06:10,499 INFO L263 TraceCheckUtils]: 31: Hoare triple {1902#false} call mutex_lock(); {1921#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} is VALID [2020-07-10 15:06:10,500 INFO L280 TraceCheckUtils]: 32: Hoare triple {1921#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} assume 1 == ~ldv_mutex~0; {1901#true} is VALID [2020-07-10 15:06:10,500 INFO L280 TraceCheckUtils]: 33: Hoare triple {1901#true} ~ldv_mutex~0 := 2; {1901#true} is VALID [2020-07-10 15:06:10,500 INFO L280 TraceCheckUtils]: 34: Hoare triple {1901#true} assume true; {1901#true} is VALID [2020-07-10 15:06:10,500 INFO L275 TraceCheckUtils]: 35: Hoare quadruple {1901#true} {1902#false} #138#return; {1902#false} is VALID [2020-07-10 15:06:10,501 INFO L263 TraceCheckUtils]: 36: Hoare triple {1902#false} call mutex_unlock(); {1902#false} is VALID [2020-07-10 15:06:10,501 INFO L280 TraceCheckUtils]: 37: Hoare triple {1902#false} assume !(2 == ~ldv_mutex~0); {1902#false} is VALID [2020-07-10 15:06:10,501 INFO L263 TraceCheckUtils]: 38: Hoare triple {1902#false} call __blast_assert(); {1902#false} is VALID [2020-07-10 15:06:10,501 INFO L280 TraceCheckUtils]: 39: Hoare triple {1902#false} assume !false; {1902#false} is VALID [2020-07-10 15:06:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 15:06:10,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457004849] [2020-07-10 15:06:10,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79191236] [2020-07-10 15:06:10,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-10 15:06:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:10,551 INFO L264 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-10 15:06:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:10,571 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-10 15:06:10,678 INFO L263 TraceCheckUtils]: 0: Hoare triple {1901#true} call ULTIMATE.init(); {1901#true} is VALID [2020-07-10 15:06:10,679 INFO L280 TraceCheckUtils]: 1: Hoare triple {1901#true} ~ldv_mutex~0 := 1;~open_called~0 := 0; {1901#true} is VALID [2020-07-10 15:06:10,679 INFO L280 TraceCheckUtils]: 2: Hoare triple {1901#true} assume true; {1901#true} is VALID [2020-07-10 15:06:10,679 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1901#true} {1901#true} #164#return; {1901#true} is VALID [2020-07-10 15:06:10,680 INFO L263 TraceCheckUtils]: 4: Hoare triple {1901#true} call #t~ret12 := main(); {1901#true} is VALID [2020-07-10 15:06:10,680 INFO L280 TraceCheckUtils]: 5: Hoare triple {1901#true} ~ldv_s_misc_fops_file_operations~0 := 0; {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:10,681 INFO L263 TraceCheckUtils]: 6: Hoare triple {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} call #t~ret1 := my_init(); {1901#true} is VALID [2020-07-10 15:06:10,681 INFO L280 TraceCheckUtils]: 7: Hoare triple {1901#true} ~open_called~0 := 0;#res := 0; {1901#true} is VALID [2020-07-10 15:06:10,681 INFO L280 TraceCheckUtils]: 8: Hoare triple {1901#true} assume true; {1901#true} is VALID [2020-07-10 15:06:10,682 INFO L275 TraceCheckUtils]: 9: Hoare quadruple {1901#true} {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #148#return; {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:10,683 INFO L280 TraceCheckUtils]: 10: Hoare triple {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume -2147483648 <= #t~ret1 && #t~ret1 <= 2147483647;havoc #t~ret1; {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:10,684 INFO L280 TraceCheckUtils]: 11: Hoare triple {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:10,685 INFO L280 TraceCheckUtils]: 12: Hoare triple {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume !!(0 != #t~nondet2);havoc #t~nondet2;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;#t~switch4 := 0 == #t~nondet3; {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:10,685 INFO L280 TraceCheckUtils]: 13: Hoare triple {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume #t~switch4; {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:10,686 INFO L280 TraceCheckUtils]: 14: Hoare triple {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume 0 == ~ldv_s_misc_fops_file_operations~0; {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:10,686 INFO L263 TraceCheckUtils]: 15: Hoare triple {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} call #t~ret5 := misc_open(); {1901#true} is VALID [2020-07-10 15:06:10,687 INFO L280 TraceCheckUtils]: 16: Hoare triple {1901#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {1901#true} is VALID [2020-07-10 15:06:10,687 INFO L280 TraceCheckUtils]: 17: Hoare triple {1901#true} assume 0 != #t~nondet0;havoc #t~nondet0;#res := 1; {1901#true} is VALID [2020-07-10 15:06:10,687 INFO L280 TraceCheckUtils]: 18: Hoare triple {1901#true} assume true; {1901#true} is VALID [2020-07-10 15:06:10,689 INFO L275 TraceCheckUtils]: 19: Hoare quadruple {1901#true} {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #150#return; {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:10,690 INFO L280 TraceCheckUtils]: 20: Hoare triple {1906#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume -2147483648 <= #t~ret5 && #t~ret5 <= 2147483647;havoc #t~ret5;#t~post6 := ~ldv_s_misc_fops_file_operations~0;~ldv_s_misc_fops_file_operations~0 := 1 + #t~post6;havoc #t~post6; {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:10,691 INFO L280 TraceCheckUtils]: 21: Hoare triple {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} havoc #t~switch4;havoc #t~nondet3; {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:10,692 INFO L280 TraceCheckUtils]: 22: Hoare triple {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:10,693 INFO L280 TraceCheckUtils]: 23: Hoare triple {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume !!(0 != #t~nondet2);havoc #t~nondet2;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;#t~switch4 := 0 == #t~nondet3; {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:10,693 INFO L280 TraceCheckUtils]: 24: Hoare triple {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume !#t~switch4;#t~switch4 := #t~switch4 || 1 == #t~nondet3; {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:10,694 INFO L280 TraceCheckUtils]: 25: Hoare triple {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume !#t~switch4;#t~switch4 := #t~switch4 || 2 == #t~nondet3; {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:10,695 INFO L280 TraceCheckUtils]: 26: Hoare triple {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume !#t~switch4;#t~switch4 := #t~switch4 || 3 == #t~nondet3; {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:10,696 INFO L280 TraceCheckUtils]: 27: Hoare triple {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume #t~switch4; {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:10,697 INFO L280 TraceCheckUtils]: 28: Hoare triple {1914#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume 3 == ~ldv_s_misc_fops_file_operations~0; {1902#false} is VALID [2020-07-10 15:06:10,697 INFO L263 TraceCheckUtils]: 29: Hoare triple {1902#false} call #t~ret11 := misc_release(); {1902#false} is VALID [2020-07-10 15:06:10,697 INFO L280 TraceCheckUtils]: 30: Hoare triple {1902#false} assume 0 != ~open_called~0; {1902#false} is VALID [2020-07-10 15:06:10,698 INFO L263 TraceCheckUtils]: 31: Hoare triple {1902#false} call mutex_lock(); {1902#false} is VALID [2020-07-10 15:06:10,698 INFO L280 TraceCheckUtils]: 32: Hoare triple {1902#false} assume 1 == ~ldv_mutex~0; {1902#false} is VALID [2020-07-10 15:06:10,698 INFO L280 TraceCheckUtils]: 33: Hoare triple {1902#false} ~ldv_mutex~0 := 2; {1902#false} is VALID [2020-07-10 15:06:10,699 INFO L280 TraceCheckUtils]: 34: Hoare triple {1902#false} assume true; {1902#false} is VALID [2020-07-10 15:06:10,699 INFO L275 TraceCheckUtils]: 35: Hoare quadruple {1902#false} {1902#false} #138#return; {1902#false} is VALID [2020-07-10 15:06:10,699 INFO L263 TraceCheckUtils]: 36: Hoare triple {1902#false} call mutex_unlock(); {1902#false} is VALID [2020-07-10 15:06:10,699 INFO L280 TraceCheckUtils]: 37: Hoare triple {1902#false} assume !(2 == ~ldv_mutex~0); {1902#false} is VALID [2020-07-10 15:06:10,700 INFO L263 TraceCheckUtils]: 38: Hoare triple {1902#false} call __blast_assert(); {1902#false} is VALID [2020-07-10 15:06:10,700 INFO L280 TraceCheckUtils]: 39: Hoare triple {1902#false} assume !false; {1902#false} is VALID [2020-07-10 15:06:10,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 15:06:10,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-10 15:06:10,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 7 [2020-07-10 15:06:10,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506597006] [2020-07-10 15:06:10,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-07-10 15:06:10,706 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 15:06:10,706 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-10 15:06:10,758 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 51 edges. 51 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:06:10,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-10 15:06:10,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 15:06:10,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-10 15:06:10,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-10 15:06:10,760 INFO L87 Difference]: Start difference. First operand 126 states and 169 transitions. Second operand 7 states. [2020-07-10 15:06:11,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:11,607 INFO L93 Difference]: Finished difference Result 350 states and 513 transitions. [2020-07-10 15:06:11,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-10 15:06:11,607 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-07-10 15:06:11,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 15:06:11,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-10 15:06:11,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 276 transitions. [2020-07-10 15:06:11,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-10 15:06:11,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 276 transitions. [2020-07-10 15:06:11,618 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states and 276 transitions. [2020-07-10 15:06:11,939 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 276 edges. 276 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:06:11,947 INFO L225 Difference]: With dead ends: 350 [2020-07-10 15:06:11,947 INFO L226 Difference]: Without dead ends: 235 [2020-07-10 15:06:11,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-10 15:06:11,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-07-10 15:06:12,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 150. [2020-07-10 15:06:12,050 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 15:06:12,050 INFO L82 GeneralOperation]: Start isEquivalent. First operand 235 states. Second operand 150 states. [2020-07-10 15:06:12,050 INFO L74 IsIncluded]: Start isIncluded. First operand 235 states. Second operand 150 states. [2020-07-10 15:06:12,050 INFO L87 Difference]: Start difference. First operand 235 states. Second operand 150 states. [2020-07-10 15:06:12,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:12,071 INFO L93 Difference]: Finished difference Result 235 states and 340 transitions. [2020-07-10 15:06:12,071 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 340 transitions. [2020-07-10 15:06:12,072 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:06:12,072 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:06:12,072 INFO L74 IsIncluded]: Start isIncluded. First operand 150 states. Second operand 235 states. [2020-07-10 15:06:12,072 INFO L87 Difference]: Start difference. First operand 150 states. Second operand 235 states. [2020-07-10 15:06:12,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:12,084 INFO L93 Difference]: Finished difference Result 235 states and 340 transitions. [2020-07-10 15:06:12,085 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 340 transitions. [2020-07-10 15:06:12,087 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:06:12,087 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:06:12,087 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 15:06:12,087 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 15:06:12,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-07-10 15:06:12,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 208 transitions. [2020-07-10 15:06:12,096 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 208 transitions. Word has length 40 [2020-07-10 15:06:12,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 15:06:12,098 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 208 transitions. [2020-07-10 15:06:12,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-10 15:06:12,098 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 208 transitions. [2020-07-10 15:06:12,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-10 15:06:12,101 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:06:12,102 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:06:12,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-10 15:06:12,316 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:06:12,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:06:12,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1520942249, now seen corresponding path program 1 times [2020-07-10 15:06:12,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:06:12,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026428984] [2020-07-10 15:06:12,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:06:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:12,444 INFO L280 TraceCheckUtils]: 0: Hoare triple {3194#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1;~open_called~0 := 0; {3172#true} is VALID [2020-07-10 15:06:12,444 INFO L280 TraceCheckUtils]: 1: Hoare triple {3172#true} assume true; {3172#true} is VALID [2020-07-10 15:06:12,444 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {3172#true} {3172#true} #164#return; {3172#true} is VALID [2020-07-10 15:06:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:12,471 INFO L280 TraceCheckUtils]: 0: Hoare triple {3195#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0;#res := 0; {3172#true} is VALID [2020-07-10 15:06:12,471 INFO L280 TraceCheckUtils]: 1: Hoare triple {3172#true} assume true; {3172#true} is VALID [2020-07-10 15:06:12,475 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {3172#true} {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #148#return; {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:12,487 INFO L280 TraceCheckUtils]: 0: Hoare triple {3195#(= ~open_called~0 |old(~open_called~0)|)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {3172#true} is VALID [2020-07-10 15:06:12,488 INFO L280 TraceCheckUtils]: 1: Hoare triple {3172#true} assume 0 != #t~nondet0;havoc #t~nondet0;#res := 1; {3172#true} is VALID [2020-07-10 15:06:12,488 INFO L280 TraceCheckUtils]: 2: Hoare triple {3172#true} assume true; {3172#true} is VALID [2020-07-10 15:06:12,492 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3172#true} {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #150#return; {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:12,502 INFO L280 TraceCheckUtils]: 0: Hoare triple {3172#true} #res := 0; {3172#true} is VALID [2020-07-10 15:06:12,502 INFO L280 TraceCheckUtils]: 1: Hoare triple {3172#true} assume true; {3172#true} is VALID [2020-07-10 15:06:12,503 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {3172#true} {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} #152#return; {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:12,517 INFO L280 TraceCheckUtils]: 0: Hoare triple {3196#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} assume 1 == ~ldv_mutex~0; {3172#true} is VALID [2020-07-10 15:06:12,518 INFO L280 TraceCheckUtils]: 1: Hoare triple {3172#true} ~ldv_mutex~0 := 2; {3172#true} is VALID [2020-07-10 15:06:12,518 INFO L280 TraceCheckUtils]: 2: Hoare triple {3172#true} assume true; {3172#true} is VALID [2020-07-10 15:06:12,518 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3172#true} {3173#false} #138#return; {3173#false} is VALID [2020-07-10 15:06:12,519 INFO L263 TraceCheckUtils]: 0: Hoare triple {3172#true} call ULTIMATE.init(); {3194#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} is VALID [2020-07-10 15:06:12,520 INFO L280 TraceCheckUtils]: 1: Hoare triple {3194#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1;~open_called~0 := 0; {3172#true} is VALID [2020-07-10 15:06:12,520 INFO L280 TraceCheckUtils]: 2: Hoare triple {3172#true} assume true; {3172#true} is VALID [2020-07-10 15:06:12,520 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3172#true} {3172#true} #164#return; {3172#true} is VALID [2020-07-10 15:06:12,520 INFO L263 TraceCheckUtils]: 4: Hoare triple {3172#true} call #t~ret12 := main(); {3172#true} is VALID [2020-07-10 15:06:12,521 INFO L280 TraceCheckUtils]: 5: Hoare triple {3172#true} ~ldv_s_misc_fops_file_operations~0 := 0; {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:12,522 INFO L263 TraceCheckUtils]: 6: Hoare triple {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} call #t~ret1 := my_init(); {3195#(= ~open_called~0 |old(~open_called~0)|)} is VALID [2020-07-10 15:06:12,522 INFO L280 TraceCheckUtils]: 7: Hoare triple {3195#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0;#res := 0; {3172#true} is VALID [2020-07-10 15:06:12,523 INFO L280 TraceCheckUtils]: 8: Hoare triple {3172#true} assume true; {3172#true} is VALID [2020-07-10 15:06:12,523 INFO L275 TraceCheckUtils]: 9: Hoare quadruple {3172#true} {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #148#return; {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:12,524 INFO L280 TraceCheckUtils]: 10: Hoare triple {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume -2147483648 <= #t~ret1 && #t~ret1 <= 2147483647;havoc #t~ret1; {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:12,524 INFO L280 TraceCheckUtils]: 11: Hoare triple {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:12,524 INFO L280 TraceCheckUtils]: 12: Hoare triple {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume !!(0 != #t~nondet2);havoc #t~nondet2;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;#t~switch4 := 0 == #t~nondet3; {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:12,525 INFO L280 TraceCheckUtils]: 13: Hoare triple {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume #t~switch4; {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:12,525 INFO L280 TraceCheckUtils]: 14: Hoare triple {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume 0 == ~ldv_s_misc_fops_file_operations~0; {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:12,526 INFO L263 TraceCheckUtils]: 15: Hoare triple {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} call #t~ret5 := misc_open(); {3195#(= ~open_called~0 |old(~open_called~0)|)} is VALID [2020-07-10 15:06:12,526 INFO L280 TraceCheckUtils]: 16: Hoare triple {3195#(= ~open_called~0 |old(~open_called~0)|)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {3172#true} is VALID [2020-07-10 15:06:12,526 INFO L280 TraceCheckUtils]: 17: Hoare triple {3172#true} assume 0 != #t~nondet0;havoc #t~nondet0;#res := 1; {3172#true} is VALID [2020-07-10 15:06:12,526 INFO L280 TraceCheckUtils]: 18: Hoare triple {3172#true} assume true; {3172#true} is VALID [2020-07-10 15:06:12,527 INFO L275 TraceCheckUtils]: 19: Hoare quadruple {3172#true} {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #150#return; {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-10 15:06:12,528 INFO L280 TraceCheckUtils]: 20: Hoare triple {3177#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume -2147483648 <= #t~ret5 && #t~ret5 <= 2147483647;havoc #t~ret5;#t~post6 := ~ldv_s_misc_fops_file_operations~0;~ldv_s_misc_fops_file_operations~0 := 1 + #t~post6;havoc #t~post6; {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:12,528 INFO L280 TraceCheckUtils]: 21: Hoare triple {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} havoc #t~switch4;havoc #t~nondet3; {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:12,529 INFO L280 TraceCheckUtils]: 22: Hoare triple {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:12,529 INFO L280 TraceCheckUtils]: 23: Hoare triple {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume !!(0 != #t~nondet2);havoc #t~nondet2;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;#t~switch4 := 0 == #t~nondet3; {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:12,529 INFO L280 TraceCheckUtils]: 24: Hoare triple {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume !#t~switch4;#t~switch4 := #t~switch4 || 1 == #t~nondet3; {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:12,530 INFO L280 TraceCheckUtils]: 25: Hoare triple {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume #t~switch4; {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:12,531 INFO L280 TraceCheckUtils]: 26: Hoare triple {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume 1 == ~ldv_s_misc_fops_file_operations~0; {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:12,531 INFO L263 TraceCheckUtils]: 27: Hoare triple {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} call #t~ret7 := misc_read(); {3172#true} is VALID [2020-07-10 15:06:12,531 INFO L280 TraceCheckUtils]: 28: Hoare triple {3172#true} #res := 0; {3172#true} is VALID [2020-07-10 15:06:12,532 INFO L280 TraceCheckUtils]: 29: Hoare triple {3172#true} assume true; {3172#true} is VALID [2020-07-10 15:06:12,532 INFO L275 TraceCheckUtils]: 30: Hoare quadruple {3172#true} {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} #152#return; {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:12,533 INFO L280 TraceCheckUtils]: 31: Hoare triple {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume -2147483648 <= #t~ret7 && #t~ret7 <= 2147483647;havoc #t~ret7;#t~post8 := ~ldv_s_misc_fops_file_operations~0;~ldv_s_misc_fops_file_operations~0 := 1 + #t~post8;havoc #t~post8; {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-10 15:06:12,533 INFO L280 TraceCheckUtils]: 32: Hoare triple {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} havoc #t~switch4;havoc #t~nondet3; {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-10 15:06:12,534 INFO L280 TraceCheckUtils]: 33: Hoare triple {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-10 15:06:12,534 INFO L280 TraceCheckUtils]: 34: Hoare triple {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume !!(0 != #t~nondet2);havoc #t~nondet2;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;#t~switch4 := 0 == #t~nondet3; {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-10 15:06:12,535 INFO L280 TraceCheckUtils]: 35: Hoare triple {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume !#t~switch4;#t~switch4 := #t~switch4 || 1 == #t~nondet3; {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-10 15:06:12,535 INFO L280 TraceCheckUtils]: 36: Hoare triple {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume !#t~switch4;#t~switch4 := #t~switch4 || 2 == #t~nondet3; {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-10 15:06:12,536 INFO L280 TraceCheckUtils]: 37: Hoare triple {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume !#t~switch4;#t~switch4 := #t~switch4 || 3 == #t~nondet3; {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-10 15:06:12,536 INFO L280 TraceCheckUtils]: 38: Hoare triple {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume #t~switch4; {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-10 15:06:12,536 INFO L280 TraceCheckUtils]: 39: Hoare triple {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume 3 == ~ldv_s_misc_fops_file_operations~0; {3173#false} is VALID [2020-07-10 15:06:12,537 INFO L263 TraceCheckUtils]: 40: Hoare triple {3173#false} call #t~ret11 := misc_release(); {3173#false} is VALID [2020-07-10 15:06:12,537 INFO L280 TraceCheckUtils]: 41: Hoare triple {3173#false} assume 0 != ~open_called~0; {3173#false} is VALID [2020-07-10 15:06:12,537 INFO L263 TraceCheckUtils]: 42: Hoare triple {3173#false} call mutex_lock(); {3196#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} is VALID [2020-07-10 15:06:12,537 INFO L280 TraceCheckUtils]: 43: Hoare triple {3196#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} assume 1 == ~ldv_mutex~0; {3172#true} is VALID [2020-07-10 15:06:12,537 INFO L280 TraceCheckUtils]: 44: Hoare triple {3172#true} ~ldv_mutex~0 := 2; {3172#true} is VALID [2020-07-10 15:06:12,538 INFO L280 TraceCheckUtils]: 45: Hoare triple {3172#true} assume true; {3172#true} is VALID [2020-07-10 15:06:12,538 INFO L275 TraceCheckUtils]: 46: Hoare quadruple {3172#true} {3173#false} #138#return; {3173#false} is VALID [2020-07-10 15:06:12,538 INFO L263 TraceCheckUtils]: 47: Hoare triple {3173#false} call mutex_unlock(); {3173#false} is VALID [2020-07-10 15:06:12,538 INFO L280 TraceCheckUtils]: 48: Hoare triple {3173#false} assume !(2 == ~ldv_mutex~0); {3173#false} is VALID [2020-07-10 15:06:12,538 INFO L263 TraceCheckUtils]: 49: Hoare triple {3173#false} call __blast_assert(); {3173#false} is VALID [2020-07-10 15:06:12,538 INFO L280 TraceCheckUtils]: 50: Hoare triple {3173#false} assume !false; {3173#false} is VALID [2020-07-10 15:06:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 15:06:12,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026428984] [2020-07-10 15:06:12,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642863896] [2020-07-10 15:06:12,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-10 15:06:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:12,590 INFO L264 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-10 15:06:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:12,607 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-10 15:06:12,692 INFO L263 TraceCheckUtils]: 0: Hoare triple {3172#true} call ULTIMATE.init(); {3172#true} is VALID [2020-07-10 15:06:12,692 INFO L280 TraceCheckUtils]: 1: Hoare triple {3172#true} ~ldv_mutex~0 := 1;~open_called~0 := 0; {3172#true} is VALID [2020-07-10 15:06:12,693 INFO L280 TraceCheckUtils]: 2: Hoare triple {3172#true} assume true; {3172#true} is VALID [2020-07-10 15:06:12,693 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3172#true} {3172#true} #164#return; {3172#true} is VALID [2020-07-10 15:06:12,694 INFO L263 TraceCheckUtils]: 4: Hoare triple {3172#true} call #t~ret12 := main(); {3172#true} is VALID [2020-07-10 15:06:12,694 INFO L280 TraceCheckUtils]: 5: Hoare triple {3172#true} ~ldv_s_misc_fops_file_operations~0 := 0; {3172#true} is VALID [2020-07-10 15:06:12,694 INFO L263 TraceCheckUtils]: 6: Hoare triple {3172#true} call #t~ret1 := my_init(); {3172#true} is VALID [2020-07-10 15:06:12,694 INFO L280 TraceCheckUtils]: 7: Hoare triple {3172#true} ~open_called~0 := 0;#res := 0; {3172#true} is VALID [2020-07-10 15:06:12,695 INFO L280 TraceCheckUtils]: 8: Hoare triple {3172#true} assume true; {3172#true} is VALID [2020-07-10 15:06:12,695 INFO L275 TraceCheckUtils]: 9: Hoare quadruple {3172#true} {3172#true} #148#return; {3172#true} is VALID [2020-07-10 15:06:12,695 INFO L280 TraceCheckUtils]: 10: Hoare triple {3172#true} assume -2147483648 <= #t~ret1 && #t~ret1 <= 2147483647;havoc #t~ret1; {3172#true} is VALID [2020-07-10 15:06:12,695 INFO L280 TraceCheckUtils]: 11: Hoare triple {3172#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {3172#true} is VALID [2020-07-10 15:06:12,696 INFO L280 TraceCheckUtils]: 12: Hoare triple {3172#true} assume !!(0 != #t~nondet2);havoc #t~nondet2;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;#t~switch4 := 0 == #t~nondet3; {3172#true} is VALID [2020-07-10 15:06:12,696 INFO L280 TraceCheckUtils]: 13: Hoare triple {3172#true} assume #t~switch4; {3172#true} is VALID [2020-07-10 15:06:12,696 INFO L280 TraceCheckUtils]: 14: Hoare triple {3172#true} assume 0 == ~ldv_s_misc_fops_file_operations~0; {3172#true} is VALID [2020-07-10 15:06:12,696 INFO L263 TraceCheckUtils]: 15: Hoare triple {3172#true} call #t~ret5 := misc_open(); {3172#true} is VALID [2020-07-10 15:06:12,697 INFO L280 TraceCheckUtils]: 16: Hoare triple {3172#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {3172#true} is VALID [2020-07-10 15:06:12,697 INFO L280 TraceCheckUtils]: 17: Hoare triple {3172#true} assume 0 != #t~nondet0;havoc #t~nondet0;#res := 1; {3172#true} is VALID [2020-07-10 15:06:12,697 INFO L280 TraceCheckUtils]: 18: Hoare triple {3172#true} assume true; {3172#true} is VALID [2020-07-10 15:06:12,697 INFO L275 TraceCheckUtils]: 19: Hoare quadruple {3172#true} {3172#true} #150#return; {3172#true} is VALID [2020-07-10 15:06:12,698 INFO L280 TraceCheckUtils]: 20: Hoare triple {3172#true} assume -2147483648 <= #t~ret5 && #t~ret5 <= 2147483647;havoc #t~ret5;#t~post6 := ~ldv_s_misc_fops_file_operations~0;~ldv_s_misc_fops_file_operations~0 := 1 + #t~post6;havoc #t~post6; {3172#true} is VALID [2020-07-10 15:06:12,698 INFO L280 TraceCheckUtils]: 21: Hoare triple {3172#true} havoc #t~switch4;havoc #t~nondet3; {3172#true} is VALID [2020-07-10 15:06:12,698 INFO L280 TraceCheckUtils]: 22: Hoare triple {3172#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {3172#true} is VALID [2020-07-10 15:06:12,698 INFO L280 TraceCheckUtils]: 23: Hoare triple {3172#true} assume !!(0 != #t~nondet2);havoc #t~nondet2;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;#t~switch4 := 0 == #t~nondet3; {3172#true} is VALID [2020-07-10 15:06:12,698 INFO L280 TraceCheckUtils]: 24: Hoare triple {3172#true} assume !#t~switch4;#t~switch4 := #t~switch4 || 1 == #t~nondet3; {3172#true} is VALID [2020-07-10 15:06:12,699 INFO L280 TraceCheckUtils]: 25: Hoare triple {3172#true} assume #t~switch4; {3172#true} is VALID [2020-07-10 15:06:12,699 INFO L280 TraceCheckUtils]: 26: Hoare triple {3172#true} assume 1 == ~ldv_s_misc_fops_file_operations~0; {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:12,700 INFO L263 TraceCheckUtils]: 27: Hoare triple {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} call #t~ret7 := misc_read(); {3172#true} is VALID [2020-07-10 15:06:12,700 INFO L280 TraceCheckUtils]: 28: Hoare triple {3172#true} #res := 0; {3172#true} is VALID [2020-07-10 15:06:12,700 INFO L280 TraceCheckUtils]: 29: Hoare triple {3172#true} assume true; {3172#true} is VALID [2020-07-10 15:06:12,701 INFO L275 TraceCheckUtils]: 30: Hoare quadruple {3172#true} {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} #152#return; {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-10 15:06:12,702 INFO L280 TraceCheckUtils]: 31: Hoare triple {3185#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume -2147483648 <= #t~ret7 && #t~ret7 <= 2147483647;havoc #t~ret7;#t~post8 := ~ldv_s_misc_fops_file_operations~0;~ldv_s_misc_fops_file_operations~0 := 1 + #t~post8;havoc #t~post8; {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-10 15:06:12,703 INFO L280 TraceCheckUtils]: 32: Hoare triple {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} havoc #t~switch4;havoc #t~nondet3; {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-10 15:06:12,703 INFO L280 TraceCheckUtils]: 33: Hoare triple {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-10 15:06:12,704 INFO L280 TraceCheckUtils]: 34: Hoare triple {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume !!(0 != #t~nondet2);havoc #t~nondet2;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;#t~switch4 := 0 == #t~nondet3; {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-10 15:06:12,704 INFO L280 TraceCheckUtils]: 35: Hoare triple {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume !#t~switch4;#t~switch4 := #t~switch4 || 1 == #t~nondet3; {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-10 15:06:12,705 INFO L280 TraceCheckUtils]: 36: Hoare triple {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume !#t~switch4;#t~switch4 := #t~switch4 || 2 == #t~nondet3; {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-10 15:06:12,706 INFO L280 TraceCheckUtils]: 37: Hoare triple {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume !#t~switch4;#t~switch4 := #t~switch4 || 3 == #t~nondet3; {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-10 15:06:12,706 INFO L280 TraceCheckUtils]: 38: Hoare triple {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume #t~switch4; {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-10 15:06:12,707 INFO L280 TraceCheckUtils]: 39: Hoare triple {3189#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume 3 == ~ldv_s_misc_fops_file_operations~0; {3173#false} is VALID [2020-07-10 15:06:12,707 INFO L263 TraceCheckUtils]: 40: Hoare triple {3173#false} call #t~ret11 := misc_release(); {3173#false} is VALID [2020-07-10 15:06:12,708 INFO L280 TraceCheckUtils]: 41: Hoare triple {3173#false} assume 0 != ~open_called~0; {3173#false} is VALID [2020-07-10 15:06:12,708 INFO L263 TraceCheckUtils]: 42: Hoare triple {3173#false} call mutex_lock(); {3173#false} is VALID [2020-07-10 15:06:12,708 INFO L280 TraceCheckUtils]: 43: Hoare triple {3173#false} assume 1 == ~ldv_mutex~0; {3173#false} is VALID [2020-07-10 15:06:12,708 INFO L280 TraceCheckUtils]: 44: Hoare triple {3173#false} ~ldv_mutex~0 := 2; {3173#false} is VALID [2020-07-10 15:06:12,709 INFO L280 TraceCheckUtils]: 45: Hoare triple {3173#false} assume true; {3173#false} is VALID [2020-07-10 15:06:12,709 INFO L275 TraceCheckUtils]: 46: Hoare quadruple {3173#false} {3173#false} #138#return; {3173#false} is VALID [2020-07-10 15:06:12,709 INFO L263 TraceCheckUtils]: 47: Hoare triple {3173#false} call mutex_unlock(); {3173#false} is VALID [2020-07-10 15:06:12,709 INFO L280 TraceCheckUtils]: 48: Hoare triple {3173#false} assume !(2 == ~ldv_mutex~0); {3173#false} is VALID [2020-07-10 15:06:12,709 INFO L263 TraceCheckUtils]: 49: Hoare triple {3173#false} call __blast_assert(); {3173#false} is VALID [2020-07-10 15:06:12,710 INFO L280 TraceCheckUtils]: 50: Hoare triple {3173#false} assume !false; {3173#false} is VALID [2020-07-10 15:06:12,712 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-10 15:06:12,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-10 15:06:12,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 8 [2020-07-10 15:06:12,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036925351] [2020-07-10 15:06:12,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-07-10 15:06:12,713 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 15:06:12,714 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-10 15:06:12,763 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:06:12,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-10 15:06:12,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 15:06:12,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-10 15:06:12,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-10 15:06:12,765 INFO L87 Difference]: Start difference. First operand 150 states and 208 transitions. Second operand 4 states. [2020-07-10 15:06:13,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:13,096 INFO L93 Difference]: Finished difference Result 387 states and 569 transitions. [2020-07-10 15:06:13,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-10 15:06:13,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-07-10 15:06:13,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 15:06:13,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-10 15:06:13,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2020-07-10 15:06:13,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-10 15:06:13,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2020-07-10 15:06:13,110 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 195 transitions. [2020-07-10 15:06:13,293 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 195 edges. 195 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:06:13,304 INFO L225 Difference]: With dead ends: 387 [2020-07-10 15:06:13,304 INFO L226 Difference]: Without dead ends: 248 [2020-07-10 15:06:13,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-10 15:06:13,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-07-10 15:06:13,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 198. [2020-07-10 15:06:13,411 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 15:06:13,411 INFO L82 GeneralOperation]: Start isEquivalent. First operand 248 states. Second operand 198 states. [2020-07-10 15:06:13,411 INFO L74 IsIncluded]: Start isIncluded. First operand 248 states. Second operand 198 states. [2020-07-10 15:06:13,412 INFO L87 Difference]: Start difference. First operand 248 states. Second operand 198 states. [2020-07-10 15:06:13,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:13,423 INFO L93 Difference]: Finished difference Result 248 states and 366 transitions. [2020-07-10 15:06:13,423 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 366 transitions. [2020-07-10 15:06:13,424 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:06:13,424 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:06:13,425 INFO L74 IsIncluded]: Start isIncluded. First operand 198 states. Second operand 248 states. [2020-07-10 15:06:13,425 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 248 states. [2020-07-10 15:06:13,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:13,436 INFO L93 Difference]: Finished difference Result 248 states and 366 transitions. [2020-07-10 15:06:13,436 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 366 transitions. [2020-07-10 15:06:13,437 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:06:13,437 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:06:13,437 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 15:06:13,438 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 15:06:13,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-07-10 15:06:13,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 288 transitions. [2020-07-10 15:06:13,446 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 288 transitions. Word has length 51 [2020-07-10 15:06:13,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 15:06:13,447 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 288 transitions. [2020-07-10 15:06:13,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-10 15:06:13,447 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 288 transitions. [2020-07-10 15:06:13,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-10 15:06:13,448 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:06:13,448 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:06:13,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-10 15:06:13,662 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:06:13,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:06:13,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1574199465, now seen corresponding path program 1 times [2020-07-10 15:06:13,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:06:13,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169207549] [2020-07-10 15:06:13,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:06:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:13,728 INFO L280 TraceCheckUtils]: 0: Hoare triple {4620#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1;~open_called~0 := 0; {4597#true} is VALID [2020-07-10 15:06:13,728 INFO L280 TraceCheckUtils]: 1: Hoare triple {4597#true} assume true; {4597#true} is VALID [2020-07-10 15:06:13,729 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {4597#true} {4597#true} #164#return; {4597#true} is VALID [2020-07-10 15:06:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:13,744 INFO L280 TraceCheckUtils]: 0: Hoare triple {4621#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0;#res := 0; {4597#true} is VALID [2020-07-10 15:06:13,745 INFO L280 TraceCheckUtils]: 1: Hoare triple {4597#true} assume true; {4597#true} is VALID [2020-07-10 15:06:13,745 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {4597#true} {4597#true} #148#return; {4597#true} is VALID [2020-07-10 15:06:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:13,749 INFO L280 TraceCheckUtils]: 0: Hoare triple {4621#(= ~open_called~0 |old(~open_called~0)|)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {4597#true} is VALID [2020-07-10 15:06:13,750 INFO L280 TraceCheckUtils]: 1: Hoare triple {4597#true} assume 0 != #t~nondet0;havoc #t~nondet0;#res := 1; {4597#true} is VALID [2020-07-10 15:06:13,750 INFO L280 TraceCheckUtils]: 2: Hoare triple {4597#true} assume true; {4597#true} is VALID [2020-07-10 15:06:13,750 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {4597#true} {4597#true} #150#return; {4597#true} is VALID [2020-07-10 15:06:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:13,754 INFO L280 TraceCheckUtils]: 0: Hoare triple {4597#true} #res := 0; {4597#true} is VALID [2020-07-10 15:06:13,754 INFO L280 TraceCheckUtils]: 1: Hoare triple {4597#true} assume true; {4597#true} is VALID [2020-07-10 15:06:13,755 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {4597#true} {4597#true} #152#return; {4597#true} is VALID [2020-07-10 15:06:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:13,764 INFO L280 TraceCheckUtils]: 0: Hoare triple {4597#true} #res := 0; {4597#true} is VALID [2020-07-10 15:06:13,765 INFO L280 TraceCheckUtils]: 1: Hoare triple {4597#true} assume true; {4597#true} is VALID [2020-07-10 15:06:13,765 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {4597#true} {4597#true} #154#return; {4597#true} is VALID [2020-07-10 15:06:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:06:13,781 INFO L280 TraceCheckUtils]: 0: Hoare triple {4622#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} assume 1 == ~ldv_mutex~0; {4597#true} is VALID [2020-07-10 15:06:13,782 INFO L280 TraceCheckUtils]: 1: Hoare triple {4597#true} ~ldv_mutex~0 := 2; {4619#(= 2 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:13,782 INFO L280 TraceCheckUtils]: 2: Hoare triple {4619#(= 2 ~ldv_mutex~0)} assume true; {4619#(= 2 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:13,783 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {4619#(= 2 ~ldv_mutex~0)} {4597#true} #138#return; {4619#(= 2 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:13,784 INFO L263 TraceCheckUtils]: 0: Hoare triple {4597#true} call ULTIMATE.init(); {4620#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} is VALID [2020-07-10 15:06:13,784 INFO L280 TraceCheckUtils]: 1: Hoare triple {4620#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1;~open_called~0 := 0; {4597#true} is VALID [2020-07-10 15:06:13,784 INFO L280 TraceCheckUtils]: 2: Hoare triple {4597#true} assume true; {4597#true} is VALID [2020-07-10 15:06:13,784 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {4597#true} {4597#true} #164#return; {4597#true} is VALID [2020-07-10 15:06:13,784 INFO L263 TraceCheckUtils]: 4: Hoare triple {4597#true} call #t~ret12 := main(); {4597#true} is VALID [2020-07-10 15:06:13,785 INFO L280 TraceCheckUtils]: 5: Hoare triple {4597#true} ~ldv_s_misc_fops_file_operations~0 := 0; {4597#true} is VALID [2020-07-10 15:06:13,785 INFO L263 TraceCheckUtils]: 6: Hoare triple {4597#true} call #t~ret1 := my_init(); {4621#(= ~open_called~0 |old(~open_called~0)|)} is VALID [2020-07-10 15:06:13,785 INFO L280 TraceCheckUtils]: 7: Hoare triple {4621#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0;#res := 0; {4597#true} is VALID [2020-07-10 15:06:13,785 INFO L280 TraceCheckUtils]: 8: Hoare triple {4597#true} assume true; {4597#true} is VALID [2020-07-10 15:06:13,786 INFO L275 TraceCheckUtils]: 9: Hoare quadruple {4597#true} {4597#true} #148#return; {4597#true} is VALID [2020-07-10 15:06:13,786 INFO L280 TraceCheckUtils]: 10: Hoare triple {4597#true} assume -2147483648 <= #t~ret1 && #t~ret1 <= 2147483647;havoc #t~ret1; {4597#true} is VALID [2020-07-10 15:06:13,786 INFO L280 TraceCheckUtils]: 11: Hoare triple {4597#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {4597#true} is VALID [2020-07-10 15:06:13,786 INFO L280 TraceCheckUtils]: 12: Hoare triple {4597#true} assume !!(0 != #t~nondet2);havoc #t~nondet2;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;#t~switch4 := 0 == #t~nondet3; {4597#true} is VALID [2020-07-10 15:06:13,786 INFO L280 TraceCheckUtils]: 13: Hoare triple {4597#true} assume #t~switch4; {4597#true} is VALID [2020-07-10 15:06:13,787 INFO L280 TraceCheckUtils]: 14: Hoare triple {4597#true} assume 0 == ~ldv_s_misc_fops_file_operations~0; {4597#true} is VALID [2020-07-10 15:06:13,787 INFO L263 TraceCheckUtils]: 15: Hoare triple {4597#true} call #t~ret5 := misc_open(); {4621#(= ~open_called~0 |old(~open_called~0)|)} is VALID [2020-07-10 15:06:13,787 INFO L280 TraceCheckUtils]: 16: Hoare triple {4621#(= ~open_called~0 |old(~open_called~0)|)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {4597#true} is VALID [2020-07-10 15:06:13,788 INFO L280 TraceCheckUtils]: 17: Hoare triple {4597#true} assume 0 != #t~nondet0;havoc #t~nondet0;#res := 1; {4597#true} is VALID [2020-07-10 15:06:13,788 INFO L280 TraceCheckUtils]: 18: Hoare triple {4597#true} assume true; {4597#true} is VALID [2020-07-10 15:06:13,788 INFO L275 TraceCheckUtils]: 19: Hoare quadruple {4597#true} {4597#true} #150#return; {4597#true} is VALID [2020-07-10 15:06:13,788 INFO L280 TraceCheckUtils]: 20: Hoare triple {4597#true} assume -2147483648 <= #t~ret5 && #t~ret5 <= 2147483647;havoc #t~ret5;#t~post6 := ~ldv_s_misc_fops_file_operations~0;~ldv_s_misc_fops_file_operations~0 := 1 + #t~post6;havoc #t~post6; {4597#true} is VALID [2020-07-10 15:06:13,788 INFO L280 TraceCheckUtils]: 21: Hoare triple {4597#true} havoc #t~switch4;havoc #t~nondet3; {4597#true} is VALID [2020-07-10 15:06:13,788 INFO L280 TraceCheckUtils]: 22: Hoare triple {4597#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {4597#true} is VALID [2020-07-10 15:06:13,788 INFO L280 TraceCheckUtils]: 23: Hoare triple {4597#true} assume !!(0 != #t~nondet2);havoc #t~nondet2;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;#t~switch4 := 0 == #t~nondet3; {4597#true} is VALID [2020-07-10 15:06:13,789 INFO L280 TraceCheckUtils]: 24: Hoare triple {4597#true} assume !#t~switch4;#t~switch4 := #t~switch4 || 1 == #t~nondet3; {4597#true} is VALID [2020-07-10 15:06:13,789 INFO L280 TraceCheckUtils]: 25: Hoare triple {4597#true} assume #t~switch4; {4597#true} is VALID [2020-07-10 15:06:13,789 INFO L280 TraceCheckUtils]: 26: Hoare triple {4597#true} assume 1 == ~ldv_s_misc_fops_file_operations~0; {4597#true} is VALID [2020-07-10 15:06:13,789 INFO L263 TraceCheckUtils]: 27: Hoare triple {4597#true} call #t~ret7 := misc_read(); {4597#true} is VALID [2020-07-10 15:06:13,789 INFO L280 TraceCheckUtils]: 28: Hoare triple {4597#true} #res := 0; {4597#true} is VALID [2020-07-10 15:06:13,789 INFO L280 TraceCheckUtils]: 29: Hoare triple {4597#true} assume true; {4597#true} is VALID [2020-07-10 15:06:13,790 INFO L275 TraceCheckUtils]: 30: Hoare quadruple {4597#true} {4597#true} #152#return; {4597#true} is VALID [2020-07-10 15:06:13,790 INFO L280 TraceCheckUtils]: 31: Hoare triple {4597#true} assume -2147483648 <= #t~ret7 && #t~ret7 <= 2147483647;havoc #t~ret7;#t~post8 := ~ldv_s_misc_fops_file_operations~0;~ldv_s_misc_fops_file_operations~0 := 1 + #t~post8;havoc #t~post8; {4597#true} is VALID [2020-07-10 15:06:13,790 INFO L280 TraceCheckUtils]: 32: Hoare triple {4597#true} havoc #t~switch4;havoc #t~nondet3; {4597#true} is VALID [2020-07-10 15:06:13,790 INFO L280 TraceCheckUtils]: 33: Hoare triple {4597#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {4597#true} is VALID [2020-07-10 15:06:13,790 INFO L280 TraceCheckUtils]: 34: Hoare triple {4597#true} assume !!(0 != #t~nondet2);havoc #t~nondet2;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;#t~switch4 := 0 == #t~nondet3; {4597#true} is VALID [2020-07-10 15:06:13,790 INFO L280 TraceCheckUtils]: 35: Hoare triple {4597#true} assume !#t~switch4;#t~switch4 := #t~switch4 || 1 == #t~nondet3; {4597#true} is VALID [2020-07-10 15:06:13,791 INFO L280 TraceCheckUtils]: 36: Hoare triple {4597#true} assume !#t~switch4;#t~switch4 := #t~switch4 || 2 == #t~nondet3; {4597#true} is VALID [2020-07-10 15:06:13,791 INFO L280 TraceCheckUtils]: 37: Hoare triple {4597#true} assume #t~switch4; {4597#true} is VALID [2020-07-10 15:06:13,791 INFO L280 TraceCheckUtils]: 38: Hoare triple {4597#true} assume 2 == ~ldv_s_misc_fops_file_operations~0; {4597#true} is VALID [2020-07-10 15:06:13,791 INFO L263 TraceCheckUtils]: 39: Hoare triple {4597#true} call #t~ret9 := misc_llseek(); {4597#true} is VALID [2020-07-10 15:06:13,791 INFO L280 TraceCheckUtils]: 40: Hoare triple {4597#true} #res := 0; {4597#true} is VALID [2020-07-10 15:06:13,792 INFO L280 TraceCheckUtils]: 41: Hoare triple {4597#true} assume true; {4597#true} is VALID [2020-07-10 15:06:13,792 INFO L275 TraceCheckUtils]: 42: Hoare quadruple {4597#true} {4597#true} #154#return; {4597#true} is VALID [2020-07-10 15:06:13,792 INFO L280 TraceCheckUtils]: 43: Hoare triple {4597#true} assume -2147483648 <= #t~ret9 && #t~ret9 <= 2147483647;havoc #t~ret9;#t~post10 := ~ldv_s_misc_fops_file_operations~0;~ldv_s_misc_fops_file_operations~0 := 1 + #t~post10;havoc #t~post10; {4597#true} is VALID [2020-07-10 15:06:13,792 INFO L280 TraceCheckUtils]: 44: Hoare triple {4597#true} havoc #t~switch4;havoc #t~nondet3; {4597#true} is VALID [2020-07-10 15:06:13,793 INFO L280 TraceCheckUtils]: 45: Hoare triple {4597#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {4597#true} is VALID [2020-07-10 15:06:13,793 INFO L280 TraceCheckUtils]: 46: Hoare triple {4597#true} assume !!(0 != #t~nondet2);havoc #t~nondet2;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;#t~switch4 := 0 == #t~nondet3; {4597#true} is VALID [2020-07-10 15:06:13,793 INFO L280 TraceCheckUtils]: 47: Hoare triple {4597#true} assume !#t~switch4;#t~switch4 := #t~switch4 || 1 == #t~nondet3; {4597#true} is VALID [2020-07-10 15:06:13,793 INFO L280 TraceCheckUtils]: 48: Hoare triple {4597#true} assume !#t~switch4;#t~switch4 := #t~switch4 || 2 == #t~nondet3; {4597#true} is VALID [2020-07-10 15:06:13,793 INFO L280 TraceCheckUtils]: 49: Hoare triple {4597#true} assume !#t~switch4;#t~switch4 := #t~switch4 || 3 == #t~nondet3; {4597#true} is VALID [2020-07-10 15:06:13,794 INFO L280 TraceCheckUtils]: 50: Hoare triple {4597#true} assume #t~switch4; {4597#true} is VALID [2020-07-10 15:06:13,794 INFO L280 TraceCheckUtils]: 51: Hoare triple {4597#true} assume 3 == ~ldv_s_misc_fops_file_operations~0; {4597#true} is VALID [2020-07-10 15:06:13,794 INFO L263 TraceCheckUtils]: 52: Hoare triple {4597#true} call #t~ret11 := misc_release(); {4597#true} is VALID [2020-07-10 15:06:13,794 INFO L280 TraceCheckUtils]: 53: Hoare triple {4597#true} assume 0 != ~open_called~0; {4597#true} is VALID [2020-07-10 15:06:13,795 INFO L263 TraceCheckUtils]: 54: Hoare triple {4597#true} call mutex_lock(); {4622#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} is VALID [2020-07-10 15:06:13,795 INFO L280 TraceCheckUtils]: 55: Hoare triple {4622#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} assume 1 == ~ldv_mutex~0; {4597#true} is VALID [2020-07-10 15:06:13,796 INFO L280 TraceCheckUtils]: 56: Hoare triple {4597#true} ~ldv_mutex~0 := 2; {4619#(= 2 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:13,798 INFO L280 TraceCheckUtils]: 57: Hoare triple {4619#(= 2 ~ldv_mutex~0)} assume true; {4619#(= 2 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:13,801 INFO L275 TraceCheckUtils]: 58: Hoare quadruple {4619#(= 2 ~ldv_mutex~0)} {4597#true} #138#return; {4619#(= 2 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:13,802 INFO L263 TraceCheckUtils]: 59: Hoare triple {4619#(= 2 ~ldv_mutex~0)} call mutex_unlock(); {4619#(= 2 ~ldv_mutex~0)} is VALID [2020-07-10 15:06:13,803 INFO L280 TraceCheckUtils]: 60: Hoare triple {4619#(= 2 ~ldv_mutex~0)} assume !(2 == ~ldv_mutex~0); {4598#false} is VALID [2020-07-10 15:06:13,803 INFO L263 TraceCheckUtils]: 61: Hoare triple {4598#false} call __blast_assert(); {4598#false} is VALID [2020-07-10 15:06:13,803 INFO L280 TraceCheckUtils]: 62: Hoare triple {4598#false} assume !false; {4598#false} is VALID [2020-07-10 15:06:13,806 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-07-10 15:06:13,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169207549] [2020-07-10 15:06:13,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 15:06:13,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-10 15:06:13,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540985966] [2020-07-10 15:06:13,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-07-10 15:06:13,808 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 15:06:13,808 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-10 15:06:13,866 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 52 edges. 52 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:06:13,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-10 15:06:13,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 15:06:13,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-10 15:06:13,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-10 15:06:13,868 INFO L87 Difference]: Start difference. First operand 198 states and 288 transitions. Second operand 6 states. [2020-07-10 15:06:14,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:14,436 INFO L93 Difference]: Finished difference Result 366 states and 542 transitions. [2020-07-10 15:06:14,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-10 15:06:14,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-07-10 15:06:14,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 15:06:14,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-10 15:06:14,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2020-07-10 15:06:14,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-10 15:06:14,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2020-07-10 15:06:14,446 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 182 transitions. [2020-07-10 15:06:14,649 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 182 edges. 182 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:06:14,654 INFO L225 Difference]: With dead ends: 366 [2020-07-10 15:06:14,654 INFO L226 Difference]: Without dead ends: 179 [2020-07-10 15:06:14,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-10 15:06:14,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-07-10 15:06:14,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 110. [2020-07-10 15:06:14,725 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 15:06:14,725 INFO L82 GeneralOperation]: Start isEquivalent. First operand 179 states. Second operand 110 states. [2020-07-10 15:06:14,725 INFO L74 IsIncluded]: Start isIncluded. First operand 179 states. Second operand 110 states. [2020-07-10 15:06:14,725 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 110 states. [2020-07-10 15:06:14,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:14,744 INFO L93 Difference]: Finished difference Result 179 states and 260 transitions. [2020-07-10 15:06:14,744 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 260 transitions. [2020-07-10 15:06:14,745 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:06:14,745 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:06:14,745 INFO L74 IsIncluded]: Start isIncluded. First operand 110 states. Second operand 179 states. [2020-07-10 15:06:14,745 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 179 states. [2020-07-10 15:06:14,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:06:14,761 INFO L93 Difference]: Finished difference Result 179 states and 260 transitions. [2020-07-10 15:06:14,764 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 260 transitions. [2020-07-10 15:06:14,766 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:06:14,766 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:06:14,766 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 15:06:14,766 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 15:06:14,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-07-10 15:06:14,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 149 transitions. [2020-07-10 15:06:14,777 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 149 transitions. Word has length 63 [2020-07-10 15:06:14,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 15:06:14,777 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 149 transitions. [2020-07-10 15:06:14,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-10 15:06:14,777 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 149 transitions. [2020-07-10 15:06:14,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-10 15:06:14,779 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:06:14,781 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:06:14,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-10 15:06:14,782 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:06:14,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:06:14,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1192820603, now seen corresponding path program 1 times [2020-07-10 15:06:14,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:06:14,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199072595] [2020-07-10 15:06:14,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:06:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 15:06:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 15:06:14,870 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-10 15:06:14,870 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-10 15:06:14,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-10 15:06:14,899 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-10 15:06:14,900 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-10 15:06:14,901 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-10 15:06:14,902 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-10 15:06:14,902 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-10 15:06:14,902 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-10 15:06:14,903 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-10 15:06:14,903 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-10 15:06:14,904 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-10 15:06:14,904 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-10 15:06:14,905 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-10 15:06:14,905 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-10 15:06:14,906 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-10 15:06:14,906 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-10 15:06:14,922 WARN L170 areAnnotationChecker]: mutex_unlockENTRY has no Hoare annotation [2020-07-10 15:06:14,922 WARN L170 areAnnotationChecker]: mutex_unlockENTRY has no Hoare annotation [2020-07-10 15:06:14,922 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-10 15:06:14,922 WARN L170 areAnnotationChecker]: misc_releaseENTRY has no Hoare annotation [2020-07-10 15:06:14,922 WARN L170 areAnnotationChecker]: misc_releaseENTRY has no Hoare annotation [2020-07-10 15:06:14,922 WARN L170 areAnnotationChecker]: misc_readENTRY has no Hoare annotation [2020-07-10 15:06:14,922 WARN L170 areAnnotationChecker]: misc_openENTRY has no Hoare annotation [2020-07-10 15:06:14,922 WARN L170 areAnnotationChecker]: mutex_lockENTRY has no Hoare annotation [2020-07-10 15:06:14,922 WARN L170 areAnnotationChecker]: mutex_lockENTRY has no Hoare annotation [2020-07-10 15:06:14,922 WARN L170 areAnnotationChecker]: check_final_stateENTRY has no Hoare annotation [2020-07-10 15:06:14,922 WARN L170 areAnnotationChecker]: check_final_stateENTRY has no Hoare annotation [2020-07-10 15:06:14,923 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 15:06:14,923 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 15:06:14,923 WARN L170 areAnnotationChecker]: __blast_assertENTRY has no Hoare annotation [2020-07-10 15:06:14,923 WARN L170 areAnnotationChecker]: __blast_assertENTRY has no Hoare annotation [2020-07-10 15:06:14,923 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-10 15:06:14,923 WARN L170 areAnnotationChecker]: my_initENTRY has no Hoare annotation [2020-07-10 15:06:14,923 WARN L170 areAnnotationChecker]: misc_llseekENTRY has no Hoare annotation [2020-07-10 15:06:14,923 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-10 15:06:14,923 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2020-07-10 15:06:14,925 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2020-07-10 15:06:14,925 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-10 15:06:14,925 WARN L170 areAnnotationChecker]: L36 has no Hoare annotation [2020-07-10 15:06:14,925 WARN L170 areAnnotationChecker]: L36 has no Hoare annotation [2020-07-10 15:06:14,925 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2020-07-10 15:06:14,925 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2020-07-10 15:06:14,925 WARN L170 areAnnotationChecker]: misc_readFINAL has no Hoare annotation [2020-07-10 15:06:14,925 WARN L170 areAnnotationChecker]: L57 has no Hoare annotation [2020-07-10 15:06:14,925 WARN L170 areAnnotationChecker]: L57 has no Hoare annotation [2020-07-10 15:06:14,926 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2020-07-10 15:06:14,926 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-10 15:06:14,926 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-10 15:06:14,926 WARN L170 areAnnotationChecker]: L28-2 has no Hoare annotation [2020-07-10 15:06:14,926 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2020-07-10 15:06:14,926 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2020-07-10 15:06:14,926 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 15:06:14,926 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 15:06:14,926 WARN L170 areAnnotationChecker]: __blast_assertFINAL has no Hoare annotation [2020-07-10 15:06:14,926 WARN L170 areAnnotationChecker]: L75 has no Hoare annotation [2020-07-10 15:06:14,927 WARN L170 areAnnotationChecker]: L75 has no Hoare annotation [2020-07-10 15:06:14,927 WARN L170 areAnnotationChecker]: my_initFINAL has no Hoare annotation [2020-07-10 15:06:14,927 WARN L170 areAnnotationChecker]: misc_llseekFINAL has no Hoare annotation [2020-07-10 15:06:14,927 WARN L170 areAnnotationChecker]: mutex_unlockFINAL has no Hoare annotation [2020-07-10 15:06:14,927 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-10 15:06:14,927 WARN L170 areAnnotationChecker]: L36-1 has no Hoare annotation [2020-07-10 15:06:14,927 WARN L170 areAnnotationChecker]: L36-1 has no Hoare annotation [2020-07-10 15:06:14,927 WARN L170 areAnnotationChecker]: L41-1 has no Hoare annotation [2020-07-10 15:06:14,927 WARN L170 areAnnotationChecker]: L41-1 has no Hoare annotation [2020-07-10 15:06:14,931 WARN L170 areAnnotationChecker]: misc_readEXIT has no Hoare annotation [2020-07-10 15:06:14,931 WARN L170 areAnnotationChecker]: misc_openFINAL has no Hoare annotation [2020-07-10 15:06:14,931 WARN L170 areAnnotationChecker]: mutex_lockFINAL has no Hoare annotation [2020-07-10 15:06:14,931 WARN L170 areAnnotationChecker]: check_final_stateEXIT has no Hoare annotation [2020-07-10 15:06:14,932 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-10 15:06:14,932 WARN L170 areAnnotationChecker]: __blast_assertEXIT has no Hoare annotation [2020-07-10 15:06:14,932 WARN L170 areAnnotationChecker]: __blast_assertEXIT has no Hoare annotation [2020-07-10 15:06:14,932 WARN L170 areAnnotationChecker]: __blast_assertEXIT has no Hoare annotation [2020-07-10 15:06:14,932 WARN L170 areAnnotationChecker]: L75-1 has no Hoare annotation [2020-07-10 15:06:14,932 WARN L170 areAnnotationChecker]: my_initEXIT has no Hoare annotation [2020-07-10 15:06:14,932 WARN L170 areAnnotationChecker]: misc_llseekEXIT has no Hoare annotation [2020-07-10 15:06:14,932 WARN L170 areAnnotationChecker]: mutex_unlockEXIT has no Hoare annotation [2020-07-10 15:06:14,932 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2020-07-10 15:06:14,932 WARN L170 areAnnotationChecker]: L42 has no Hoare annotation [2020-07-10 15:06:14,932 WARN L170 areAnnotationChecker]: L90-1 has no Hoare annotation [2020-07-10 15:06:14,932 WARN L170 areAnnotationChecker]: misc_openEXIT has no Hoare annotation [2020-07-10 15:06:14,932 WARN L170 areAnnotationChecker]: mutex_lockEXIT has no Hoare annotation [2020-07-10 15:06:14,932 WARN L170 areAnnotationChecker]: mutex_lockEXIT has no Hoare annotation [2020-07-10 15:06:14,932 WARN L170 areAnnotationChecker]: mutex_lockEXIT has no Hoare annotation [2020-07-10 15:06:14,933 WARN L170 areAnnotationChecker]: L115 has no Hoare annotation [2020-07-10 15:06:14,933 WARN L170 areAnnotationChecker]: L76-3 has no Hoare annotation [2020-07-10 15:06:14,933 WARN L170 areAnnotationChecker]: L76-3 has no Hoare annotation [2020-07-10 15:06:14,933 WARN L170 areAnnotationChecker]: L98-1 has no Hoare annotation [2020-07-10 15:06:14,933 WARN L170 areAnnotationChecker]: misc_releaseFINAL has no Hoare annotation [2020-07-10 15:06:14,933 WARN L170 areAnnotationChecker]: L78 has no Hoare annotation [2020-07-10 15:06:14,933 WARN L170 areAnnotationChecker]: L82-1 has no Hoare annotation [2020-07-10 15:06:14,933 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-10 15:06:14,933 WARN L170 areAnnotationChecker]: L76-4 has no Hoare annotation [2020-07-10 15:06:14,933 WARN L170 areAnnotationChecker]: L76-4 has no Hoare annotation [2020-07-10 15:06:14,933 WARN L170 areAnnotationChecker]: L76-1 has no Hoare annotation [2020-07-10 15:06:14,933 WARN L170 areAnnotationChecker]: L76-1 has no Hoare annotation [2020-07-10 15:06:14,933 WARN L170 areAnnotationChecker]: misc_releaseEXIT has no Hoare annotation [2020-07-10 15:06:14,934 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-10 15:06:14,934 WARN L170 areAnnotationChecker]: L80 has no Hoare annotation [2020-07-10 15:06:14,934 WARN L170 areAnnotationChecker]: L80 has no Hoare annotation [2020-07-10 15:06:14,934 WARN L170 areAnnotationChecker]: L106-1 has no Hoare annotation [2020-07-10 15:06:14,934 WARN L170 areAnnotationChecker]: L81 has no Hoare annotation [2020-07-10 15:06:14,934 WARN L170 areAnnotationChecker]: L81 has no Hoare annotation [2020-07-10 15:06:14,934 WARN L170 areAnnotationChecker]: L88 has no Hoare annotation [2020-07-10 15:06:14,934 WARN L170 areAnnotationChecker]: L88 has no Hoare annotation [2020-07-10 15:06:14,934 WARN L170 areAnnotationChecker]: L82 has no Hoare annotation [2020-07-10 15:06:14,934 WARN L170 areAnnotationChecker]: L82 has no Hoare annotation [2020-07-10 15:06:14,935 WARN L170 areAnnotationChecker]: L89 has no Hoare annotation [2020-07-10 15:06:14,935 WARN L170 areAnnotationChecker]: L89 has no Hoare annotation [2020-07-10 15:06:14,935 WARN L170 areAnnotationChecker]: L96 has no Hoare annotation [2020-07-10 15:06:14,935 WARN L170 areAnnotationChecker]: L96 has no Hoare annotation [2020-07-10 15:06:14,935 WARN L170 areAnnotationChecker]: L90 has no Hoare annotation [2020-07-10 15:06:14,935 WARN L170 areAnnotationChecker]: L90 has no Hoare annotation [2020-07-10 15:06:14,935 WARN L170 areAnnotationChecker]: L97 has no Hoare annotation [2020-07-10 15:06:14,935 WARN L170 areAnnotationChecker]: L97 has no Hoare annotation [2020-07-10 15:06:14,935 WARN L170 areAnnotationChecker]: L104 has no Hoare annotation [2020-07-10 15:06:14,936 WARN L170 areAnnotationChecker]: L104 has no Hoare annotation [2020-07-10 15:06:14,936 WARN L170 areAnnotationChecker]: L98 has no Hoare annotation [2020-07-10 15:06:14,936 WARN L170 areAnnotationChecker]: L98 has no Hoare annotation [2020-07-10 15:06:14,936 WARN L170 areAnnotationChecker]: L105 has no Hoare annotation [2020-07-10 15:06:14,936 WARN L170 areAnnotationChecker]: L105 has no Hoare annotation [2020-07-10 15:06:14,936 WARN L170 areAnnotationChecker]: L112 has no Hoare annotation [2020-07-10 15:06:14,936 WARN L170 areAnnotationChecker]: L112 has no Hoare annotation [2020-07-10 15:06:14,936 WARN L170 areAnnotationChecker]: L106 has no Hoare annotation [2020-07-10 15:06:14,936 WARN L170 areAnnotationChecker]: L106 has no Hoare annotation [2020-07-10 15:06:14,937 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-10 15:06:14,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 03:06:14 BoogieIcfgContainer [2020-07-10 15:06:14,939 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 15:06:14,942 INFO L168 Benchmark]: Toolchain (without parser) took 9351.74 ms. Allocated memory was 136.8 MB in the beginning and 327.7 MB in the end (delta: 190.8 MB). Free memory was 101.0 MB in the beginning and 148.7 MB in the end (delta: -47.7 MB). Peak memory consumption was 143.1 MB. Max. memory is 7.1 GB. [2020-07-10 15:06:14,943 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 136.8 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-10 15:06:14,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.19 ms. Allocated memory is still 136.8 MB. Free memory was 100.6 MB in the beginning and 89.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-10 15:06:14,944 INFO L168 Benchmark]: Boogie Preprocessor took 117.58 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 89.9 MB in the beginning and 178.4 MB in the end (delta: -88.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-10 15:06:14,945 INFO L168 Benchmark]: RCFGBuilder took 558.42 ms. Allocated memory is still 200.3 MB. Free memory was 178.4 MB in the beginning and 146.8 MB in the end (delta: 31.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. [2020-07-10 15:06:14,946 INFO L168 Benchmark]: TraceAbstraction took 8395.49 ms. Allocated memory was 200.3 MB in the beginning and 327.7 MB in the end (delta: 127.4 MB). Free memory was 146.1 MB in the beginning and 148.7 MB in the end (delta: -2.6 MB). Peak memory consumption was 124.8 MB. Max. memory is 7.1 GB. [2020-07-10 15:06:14,949 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 136.8 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.19 ms. Allocated memory is still 136.8 MB. Free memory was 100.6 MB in the beginning and 89.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.58 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 89.9 MB in the beginning and 178.4 MB in the end (delta: -88.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 558.42 ms. Allocated memory is still 200.3 MB. Free memory was 178.4 MB in the beginning and 146.8 MB in the end (delta: 31.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8395.49 ms. Allocated memory was 200.3 MB in the beginning and 327.7 MB in the end (delta: 127.4 MB). Free memory was 146.1 MB in the beginning and 148.7 MB in the end (delta: -2.6 MB). Peak memory consumption was 124.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] int ldv_mutex = 1; [L11] int open_called = 0; VAL [\old(ldv_mutex)=5, \old(open_called)=4, ldv_mutex=1, open_called=0] [L74] int ldv_s_misc_fops_file_operations = 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L75] CALL my_init() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L69] open_called = 0 [L70] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L75] RET my_init() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, my_init()=0, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L81] COND TRUE ldv_s_misc_fops_file_operations==0 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L82] CALL misc_open() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L57] COND TRUE __VERIFIER_nondet_int() [L59] return 1; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=1, ldv_mutex=1, open_called=0] [L82] RET misc_open() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, misc_open()=1, open_called=0] [L83] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L89] COND TRUE ldv_s_misc_fops_file_operations==1 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L90] CALL misc_read() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L52] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L90] RET misc_read() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, misc_read()=0, open_called=0] [L91] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L97] COND TRUE ldv_s_misc_fops_file_operations==2 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L98] CALL misc_llseek() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L48] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L98] RET misc_llseek() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, misc_llseek()=0, open_called=0] [L99] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L104] case 3: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L105] COND TRUE ldv_s_misc_fops_file_operations==3 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L106] CALL misc_release() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L34] COND FALSE !(\read(open_called)) VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L41] CALL mutex_lock() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L16] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L17] ldv_mutex = 2 VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=2, open_called=0] [L41] RET mutex_lock() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=2, open_called=0] [L42] CALL mutex_lock() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L16] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L16] CALL __blast_assert() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L4] __VERIFIER_error() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.2s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 416 SDtfs, 485 SDslu, 663 SDs, 0 SdLazy, 488 SolverSat, 245 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 249 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 370 NumberOfCodeBlocks, 370 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 299 ConstructedInterpolants, 0 QuantifiedInterpolants, 22707 SizeOfPredicates, 2 NumberOfNonLiveVariables, 254 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 36/53 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...