/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 16:23:45,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 16:23:45,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 16:23:45,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 16:23:45,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 16:23:45,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 16:23:45,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 16:23:45,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 16:23:45,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 16:23:45,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 16:23:45,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 16:23:45,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 16:23:45,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 16:23:45,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 16:23:45,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 16:23:45,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 16:23:45,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 16:23:45,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 16:23:45,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 16:23:45,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 16:23:45,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 16:23:45,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 16:23:45,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 16:23:45,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 16:23:45,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 16:23:45,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 16:23:45,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 16:23:45,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 16:23:45,771 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-08 16:23:45,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 16:23:45,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 16:23:45,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 16:23:45,785 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 16:23:45,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 16:23:45,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 16:23:45,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 16:23:45,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 16:23:45,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 16:23:45,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 16:23:45,787 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 16:23:45,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 16:23:45,787 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 16:23:45,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 16:23:45,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 16:23:45,788 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-08 16:23:45,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 16:23:45,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 16:23:45,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 16:23:45,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 16:23:45,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-08 16:23:45,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 16:23:45,789 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-08 16:23:46,070 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 16:23:46,083 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 16:23:46,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 16:23:46,088 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 16:23:46,088 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 16:23:46,089 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-07-08 16:23:46,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54e2330a2/09f0249c3e5d42dc8e6f0fd02b8cdb0f/FLAG43e89edc1 [2020-07-08 16:23:46,664 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 16:23:46,664 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-07-08 16:23:46,671 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54e2330a2/09f0249c3e5d42dc8e6f0fd02b8cdb0f/FLAG43e89edc1 [2020-07-08 16:23:47,021 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54e2330a2/09f0249c3e5d42dc8e6f0fd02b8cdb0f [2020-07-08 16:23:47,031 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 16:23:47,033 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 16:23:47,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 16:23:47,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 16:23:47,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 16:23:47,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 04:23:47" (1/1) ... [2020-07-08 16:23:47,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@743e3aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:47, skipping insertion in model container [2020-07-08 16:23:47,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 04:23:47" (1/1) ... [2020-07-08 16:23:47,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 16:23:47,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 16:23:47,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 16:23:47,275 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 16:23:47,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 16:23:47,317 INFO L208 MainTranslator]: Completed translation [2020-07-08 16:23:47,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:47 WrapperNode [2020-07-08 16:23:47,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 16:23:47,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 16:23:47,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 16:23:47,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 16:23:47,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:47" (1/1) ... [2020-07-08 16:23:47,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:47" (1/1) ... [2020-07-08 16:23:47,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:47" (1/1) ... [2020-07-08 16:23:47,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:47" (1/1) ... [2020-07-08 16:23:47,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:47" (1/1) ... [2020-07-08 16:23:47,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:47" (1/1) ... [2020-07-08 16:23:47,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:47" (1/1) ... [2020-07-08 16:23:47,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 16:23:47,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 16:23:47,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 16:23:47,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 16:23:47,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:47" (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 [2020-07-08 16:23:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 16:23:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 16:23:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-08 16:23:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-08 16:23:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-08 16:23:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-07-08 16:23:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-07-08 16:23:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-07-08 16:23:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-07-08 16:23:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-07-08 16:23:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-07-08 16:23:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 16:23:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 16:23:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-08 16:23:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-08 16:23:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-08 16:23:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-08 16:23:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-07-08 16:23:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-07-08 16:23:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-07-08 16:23:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-07-08 16:23:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-07-08 16:23:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-07-08 16:23:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 16:23:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 16:23:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 16:23:48,101 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 16:23:48,101 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-08 16:23:48,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 04:23:48 BoogieIcfgContainer [2020-07-08 16:23:48,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 16:23:48,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 16:23:48,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 16:23:48,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 16:23:48,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 04:23:47" (1/3) ... [2020-07-08 16:23:48,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d251e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 04:23:48, skipping insertion in model container [2020-07-08 16:23:48,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:23:47" (2/3) ... [2020-07-08 16:23:48,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d251e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 04:23:48, skipping insertion in model container [2020-07-08 16:23:48,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 04:23:48" (3/3) ... [2020-07-08 16:23:48,117 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-07-08 16:23:48,128 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-08 16:23:48,137 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 16:23:48,152 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 16:23:48,176 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 16:23:48,176 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 16:23:48,176 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-08 16:23:48,177 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 16:23:48,177 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 16:23:48,177 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 16:23:48,177 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 16:23:48,178 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 16:23:48,199 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-07-08 16:23:48,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-08 16:23:48,212 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 16:23:48,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 16:23:48,213 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 16:23:48,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 16:23:48,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1008214113, now seen corresponding path program 1 times [2020-07-08 16:23:48,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 16:23:48,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506813010] [2020-07-08 16:23:48,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 16:23:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:48,432 INFO L280 TraceCheckUtils]: 0: Hoare triple {118#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1; {108#true} is VALID [2020-07-08 16:23:48,432 INFO L280 TraceCheckUtils]: 1: Hoare triple {108#true} ~open_called~0 := 0; {108#true} is VALID [2020-07-08 16:23:48,433 INFO L280 TraceCheckUtils]: 2: Hoare triple {108#true} assume true; {108#true} is VALID [2020-07-08 16:23:48,434 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {108#true} {108#true} #195#return; {108#true} is VALID [2020-07-08 16:23:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:48,460 INFO L280 TraceCheckUtils]: 0: Hoare triple {119#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0; {108#true} is VALID [2020-07-08 16:23:48,460 INFO L280 TraceCheckUtils]: 1: Hoare triple {108#true} #res := 0; {108#true} is VALID [2020-07-08 16:23:48,461 INFO L280 TraceCheckUtils]: 2: Hoare triple {108#true} assume true; {108#true} is VALID [2020-07-08 16:23:48,461 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {108#true} {108#true} #179#return; {108#true} is VALID [2020-07-08 16:23:48,463 INFO L263 TraceCheckUtils]: 0: Hoare triple {108#true} call ULTIMATE.init(); {118#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} is VALID [2020-07-08 16:23:48,464 INFO L280 TraceCheckUtils]: 1: Hoare triple {118#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1; {108#true} is VALID [2020-07-08 16:23:48,464 INFO L280 TraceCheckUtils]: 2: Hoare triple {108#true} ~open_called~0 := 0; {108#true} is VALID [2020-07-08 16:23:48,464 INFO L280 TraceCheckUtils]: 3: Hoare triple {108#true} assume true; {108#true} is VALID [2020-07-08 16:23:48,465 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {108#true} {108#true} #195#return; {108#true} is VALID [2020-07-08 16:23:48,465 INFO L263 TraceCheckUtils]: 5: Hoare triple {108#true} call #t~ret12 := main(); {108#true} is VALID [2020-07-08 16:23:48,466 INFO L280 TraceCheckUtils]: 6: Hoare triple {108#true} ~ldv_s_misc_fops_file_operations~0 := 0; {108#true} is VALID [2020-07-08 16:23:48,467 INFO L263 TraceCheckUtils]: 7: Hoare triple {108#true} call #t~ret1 := my_init(); {119#(= ~open_called~0 |old(~open_called~0)|)} is VALID [2020-07-08 16:23:48,467 INFO L280 TraceCheckUtils]: 8: Hoare triple {119#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0; {108#true} is VALID [2020-07-08 16:23:48,468 INFO L280 TraceCheckUtils]: 9: Hoare triple {108#true} #res := 0; {108#true} is VALID [2020-07-08 16:23:48,468 INFO L280 TraceCheckUtils]: 10: Hoare triple {108#true} assume true; {108#true} is VALID [2020-07-08 16:23:48,469 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {108#true} {108#true} #179#return; {108#true} is VALID [2020-07-08 16:23:48,469 INFO L280 TraceCheckUtils]: 12: Hoare triple {108#true} assume -2147483648 <= #t~ret1 && #t~ret1 <= 2147483647; {108#true} is VALID [2020-07-08 16:23:48,470 INFO L280 TraceCheckUtils]: 13: Hoare triple {108#true} havoc #t~ret1; {108#true} is VALID [2020-07-08 16:23:48,471 INFO L280 TraceCheckUtils]: 14: Hoare triple {108#true} assume !true; {109#false} is VALID [2020-07-08 16:23:48,471 INFO L263 TraceCheckUtils]: 15: Hoare triple {109#false} call check_final_state(); {109#false} is VALID [2020-07-08 16:23:48,472 INFO L280 TraceCheckUtils]: 16: Hoare triple {109#false} assume !(1 == ~ldv_mutex~0); {109#false} is VALID [2020-07-08 16:23:48,472 INFO L263 TraceCheckUtils]: 17: Hoare triple {109#false} call __blast_assert(); {109#false} is VALID [2020-07-08 16:23:48,472 INFO L280 TraceCheckUtils]: 18: Hoare triple {109#false} assume !false; {109#false} is VALID [2020-07-08 16:23:48,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 16:23:48,475 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 16:23:48,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506813010] [2020-07-08 16:23:48,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 16:23:48,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-08 16:23:48,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337948131] [2020-07-08 16:23:48,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-07-08 16:23:48,491 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 16:23:48,495 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-08 16:23:48,528 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:23:48,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-08 16:23:48,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 16:23:48,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-08 16:23:48,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-08 16:23:48,541 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 4 states. [2020-07-08 16:23:49,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:23:49,224 INFO L93 Difference]: Finished difference Result 199 states and 244 transitions. [2020-07-08 16:23:49,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-08 16:23:49,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-07-08 16:23:49,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 16:23:49,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-08 16:23:49,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2020-07-08 16:23:49,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-08 16:23:49,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2020-07-08 16:23:49,277 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 244 transitions. [2020-07-08 16:23:49,569 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 244 edges. 244 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:23:49,588 INFO L225 Difference]: With dead ends: 199 [2020-07-08 16:23:49,588 INFO L226 Difference]: Without dead ends: 101 [2020-07-08 16:23:49,594 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 [2020-07-08 16:23:49,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-07-08 16:23:49,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2020-07-08 16:23:49,758 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 16:23:49,759 INFO L82 GeneralOperation]: Start isEquivalent. First operand 101 states. Second operand 96 states. [2020-07-08 16:23:49,759 INFO L74 IsIncluded]: Start isIncluded. First operand 101 states. Second operand 96 states. [2020-07-08 16:23:49,760 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 96 states. [2020-07-08 16:23:49,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:23:49,770 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2020-07-08 16:23:49,770 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2020-07-08 16:23:49,772 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 16:23:49,773 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 16:23:49,773 INFO L74 IsIncluded]: Start isIncluded. First operand 96 states. Second operand 101 states. [2020-07-08 16:23:49,773 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 101 states. [2020-07-08 16:23:49,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:23:49,783 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2020-07-08 16:23:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2020-07-08 16:23:49,785 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 16:23:49,785 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 16:23:49,785 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 16:23:49,785 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 16:23:49,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-07-08 16:23:49,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-07-08 16:23:49,794 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 19 [2020-07-08 16:23:49,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 16:23:49,794 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-07-08 16:23:49,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-08 16:23:49,795 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 96 states and 111 transitions. [2020-07-08 16:23:49,932 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 111 edges. 111 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:23:49,932 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-07-08 16:23:49,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-08 16:23:49,933 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 16:23:49,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 16:23:49,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 16:23:49,934 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 16:23:49,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 16:23:49,934 INFO L82 PathProgramCache]: Analyzing trace with hash 837576233, now seen corresponding path program 1 times [2020-07-08 16:23:49,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 16:23:49,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239645430] [2020-07-08 16:23:49,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 16:23:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:50,047 INFO L280 TraceCheckUtils]: 0: Hoare triple {925#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1; {920#(= 1 ~ldv_mutex~0)} is VALID [2020-07-08 16:23:50,047 INFO L280 TraceCheckUtils]: 1: Hoare triple {920#(= 1 ~ldv_mutex~0)} ~open_called~0 := 0; {920#(= 1 ~ldv_mutex~0)} is VALID [2020-07-08 16:23:50,048 INFO L280 TraceCheckUtils]: 2: Hoare triple {920#(= 1 ~ldv_mutex~0)} assume true; {920#(= 1 ~ldv_mutex~0)} is VALID [2020-07-08 16:23:50,050 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {920#(= 1 ~ldv_mutex~0)} {914#true} #195#return; {920#(= 1 ~ldv_mutex~0)} is VALID [2020-07-08 16:23:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:50,065 INFO L280 TraceCheckUtils]: 0: Hoare triple {926#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0; {914#true} is VALID [2020-07-08 16:23:50,065 INFO L280 TraceCheckUtils]: 1: Hoare triple {914#true} #res := 0; {914#true} is VALID [2020-07-08 16:23:50,065 INFO L280 TraceCheckUtils]: 2: Hoare triple {914#true} assume true; {914#true} is VALID [2020-07-08 16:23:50,067 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {914#true} {920#(= 1 ~ldv_mutex~0)} #179#return; {920#(= 1 ~ldv_mutex~0)} is VALID [2020-07-08 16:23:50,068 INFO L263 TraceCheckUtils]: 0: Hoare triple {914#true} call ULTIMATE.init(); {925#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} is VALID [2020-07-08 16:23:50,069 INFO L280 TraceCheckUtils]: 1: Hoare triple {925#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1; {920#(= 1 ~ldv_mutex~0)} is VALID [2020-07-08 16:23:50,070 INFO L280 TraceCheckUtils]: 2: Hoare triple {920#(= 1 ~ldv_mutex~0)} ~open_called~0 := 0; {920#(= 1 ~ldv_mutex~0)} is VALID [2020-07-08 16:23:50,071 INFO L280 TraceCheckUtils]: 3: Hoare triple {920#(= 1 ~ldv_mutex~0)} assume true; {920#(= 1 ~ldv_mutex~0)} is VALID [2020-07-08 16:23:50,072 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {920#(= 1 ~ldv_mutex~0)} {914#true} #195#return; {920#(= 1 ~ldv_mutex~0)} is VALID [2020-07-08 16:23:50,073 INFO L263 TraceCheckUtils]: 5: Hoare triple {920#(= 1 ~ldv_mutex~0)} call #t~ret12 := main(); {920#(= 1 ~ldv_mutex~0)} is VALID [2020-07-08 16:23:50,074 INFO L280 TraceCheckUtils]: 6: Hoare triple {920#(= 1 ~ldv_mutex~0)} ~ldv_s_misc_fops_file_operations~0 := 0; {920#(= 1 ~ldv_mutex~0)} is VALID [2020-07-08 16:23:50,075 INFO L263 TraceCheckUtils]: 7: Hoare triple {920#(= 1 ~ldv_mutex~0)} call #t~ret1 := my_init(); {926#(= ~open_called~0 |old(~open_called~0)|)} is VALID [2020-07-08 16:23:50,076 INFO L280 TraceCheckUtils]: 8: Hoare triple {926#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0; {914#true} is VALID [2020-07-08 16:23:50,076 INFO L280 TraceCheckUtils]: 9: Hoare triple {914#true} #res := 0; {914#true} is VALID [2020-07-08 16:23:50,076 INFO L280 TraceCheckUtils]: 10: Hoare triple {914#true} assume true; {914#true} is VALID [2020-07-08 16:23:50,077 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {914#true} {920#(= 1 ~ldv_mutex~0)} #179#return; {920#(= 1 ~ldv_mutex~0)} is VALID [2020-07-08 16:23:50,079 INFO L280 TraceCheckUtils]: 12: Hoare triple {920#(= 1 ~ldv_mutex~0)} assume -2147483648 <= #t~ret1 && #t~ret1 <= 2147483647; {920#(= 1 ~ldv_mutex~0)} is VALID [2020-07-08 16:23:50,080 INFO L280 TraceCheckUtils]: 13: Hoare triple {920#(= 1 ~ldv_mutex~0)} havoc #t~ret1; {920#(= 1 ~ldv_mutex~0)} is VALID [2020-07-08 16:23:50,081 INFO L280 TraceCheckUtils]: 14: Hoare triple {920#(= 1 ~ldv_mutex~0)} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {920#(= 1 ~ldv_mutex~0)} is VALID [2020-07-08 16:23:50,083 INFO L280 TraceCheckUtils]: 15: Hoare triple {920#(= 1 ~ldv_mutex~0)} assume !(0 != #t~nondet2); {920#(= 1 ~ldv_mutex~0)} is VALID [2020-07-08 16:23:50,083 INFO L280 TraceCheckUtils]: 16: Hoare triple {920#(= 1 ~ldv_mutex~0)} havoc #t~nondet2; {920#(= 1 ~ldv_mutex~0)} is VALID [2020-07-08 16:23:50,084 INFO L263 TraceCheckUtils]: 17: Hoare triple {920#(= 1 ~ldv_mutex~0)} call check_final_state(); {920#(= 1 ~ldv_mutex~0)} is VALID [2020-07-08 16:23:50,085 INFO L280 TraceCheckUtils]: 18: Hoare triple {920#(= 1 ~ldv_mutex~0)} assume !(1 == ~ldv_mutex~0); {915#false} is VALID [2020-07-08 16:23:50,085 INFO L263 TraceCheckUtils]: 19: Hoare triple {915#false} call __blast_assert(); {915#false} is VALID [2020-07-08 16:23:50,085 INFO L280 TraceCheckUtils]: 20: Hoare triple {915#false} assume !false; {915#false} is VALID [2020-07-08 16:23:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 16:23:50,087 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 16:23:50,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239645430] [2020-07-08 16:23:50,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 16:23:50,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-08 16:23:50,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674535626] [2020-07-08 16:23:50,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-07-08 16:23:50,089 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 16:23:50,090 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-08 16:23:50,111 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:23:50,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-08 16:23:50,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 16:23:50,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-08 16:23:50,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-08 16:23:50,112 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 5 states. [2020-07-08 16:23:50,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:23:50,927 INFO L93 Difference]: Finished difference Result 171 states and 202 transitions. [2020-07-08 16:23:50,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-08 16:23:50,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-07-08 16:23:50,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 16:23:50,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 16:23:50,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2020-07-08 16:23:50,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 16:23:50,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2020-07-08 16:23:50,943 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 202 transitions. [2020-07-08 16:23:51,152 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 202 edges. 202 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:23:51,162 INFO L225 Difference]: With dead ends: 171 [2020-07-08 16:23:51,162 INFO L226 Difference]: Without dead ends: 164 [2020-07-08 16:23:51,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-08 16:23:51,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-07-08 16:23:51,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2020-07-08 16:23:51,335 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 16:23:51,335 INFO L82 GeneralOperation]: Start isEquivalent. First operand 164 states. Second operand 160 states. [2020-07-08 16:23:51,336 INFO L74 IsIncluded]: Start isIncluded. First operand 164 states. Second operand 160 states. [2020-07-08 16:23:51,336 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 160 states. [2020-07-08 16:23:51,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:23:51,352 INFO L93 Difference]: Finished difference Result 164 states and 194 transitions. [2020-07-08 16:23:51,352 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 194 transitions. [2020-07-08 16:23:51,354 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 16:23:51,355 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 16:23:51,355 INFO L74 IsIncluded]: Start isIncluded. First operand 160 states. Second operand 164 states. [2020-07-08 16:23:51,355 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 164 states. [2020-07-08 16:23:51,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:23:51,370 INFO L93 Difference]: Finished difference Result 164 states and 194 transitions. [2020-07-08 16:23:51,370 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 194 transitions. [2020-07-08 16:23:51,371 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 16:23:51,371 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 16:23:51,371 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 16:23:51,372 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 16:23:51,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-07-08 16:23:51,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2020-07-08 16:23:51,385 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 21 [2020-07-08 16:23:51,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 16:23:51,386 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2020-07-08 16:23:51,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-08 16:23:51,386 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 160 states and 190 transitions. [2020-07-08 16:23:51,587 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 190 edges. 190 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:23:51,587 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2020-07-08 16:23:51,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-08 16:23:51,589 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 16:23:51,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 16:23:51,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 16:23:51,589 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 16:23:51,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 16:23:51,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1006142192, now seen corresponding path program 1 times [2020-07-08 16:23:51,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 16:23:51,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494838858] [2020-07-08 16:23:51,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 16:23:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:51,662 INFO L280 TraceCheckUtils]: 0: Hoare triple {1938#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1; {1923#true} is VALID [2020-07-08 16:23:51,662 INFO L280 TraceCheckUtils]: 1: Hoare triple {1923#true} ~open_called~0 := 0; {1923#true} is VALID [2020-07-08 16:23:51,663 INFO L280 TraceCheckUtils]: 2: Hoare triple {1923#true} assume true; {1923#true} is VALID [2020-07-08 16:23:51,663 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1923#true} {1923#true} #195#return; {1923#true} is VALID [2020-07-08 16:23:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:51,679 INFO L280 TraceCheckUtils]: 0: Hoare triple {1939#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0; {1923#true} is VALID [2020-07-08 16:23:51,680 INFO L280 TraceCheckUtils]: 1: Hoare triple {1923#true} #res := 0; {1923#true} is VALID [2020-07-08 16:23:51,680 INFO L280 TraceCheckUtils]: 2: Hoare triple {1923#true} assume true; {1923#true} is VALID [2020-07-08 16:23:51,681 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1923#true} {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #179#return; {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:51,694 INFO L280 TraceCheckUtils]: 0: Hoare triple {1940#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} assume 1 == ~ldv_mutex~0; {1923#true} is VALID [2020-07-08 16:23:51,694 INFO L280 TraceCheckUtils]: 1: Hoare triple {1923#true} ~ldv_mutex~0 := 2; {1923#true} is VALID [2020-07-08 16:23:51,694 INFO L280 TraceCheckUtils]: 2: Hoare triple {1923#true} assume true; {1923#true} is VALID [2020-07-08 16:23:51,695 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1923#true} {1924#false} #169#return; {1924#false} is VALID [2020-07-08 16:23:51,696 INFO L263 TraceCheckUtils]: 0: Hoare triple {1923#true} call ULTIMATE.init(); {1938#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} is VALID [2020-07-08 16:23:51,696 INFO L280 TraceCheckUtils]: 1: Hoare triple {1938#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1; {1923#true} is VALID [2020-07-08 16:23:51,696 INFO L280 TraceCheckUtils]: 2: Hoare triple {1923#true} ~open_called~0 := 0; {1923#true} is VALID [2020-07-08 16:23:51,696 INFO L280 TraceCheckUtils]: 3: Hoare triple {1923#true} assume true; {1923#true} is VALID [2020-07-08 16:23:51,697 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {1923#true} {1923#true} #195#return; {1923#true} is VALID [2020-07-08 16:23:51,697 INFO L263 TraceCheckUtils]: 5: Hoare triple {1923#true} call #t~ret12 := main(); {1923#true} is VALID [2020-07-08 16:23:51,698 INFO L280 TraceCheckUtils]: 6: Hoare triple {1923#true} ~ldv_s_misc_fops_file_operations~0 := 0; {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:51,699 INFO L263 TraceCheckUtils]: 7: Hoare triple {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} call #t~ret1 := my_init(); {1939#(= ~open_called~0 |old(~open_called~0)|)} is VALID [2020-07-08 16:23:51,699 INFO L280 TraceCheckUtils]: 8: Hoare triple {1939#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0; {1923#true} is VALID [2020-07-08 16:23:51,699 INFO L280 TraceCheckUtils]: 9: Hoare triple {1923#true} #res := 0; {1923#true} is VALID [2020-07-08 16:23:51,700 INFO L280 TraceCheckUtils]: 10: Hoare triple {1923#true} assume true; {1923#true} is VALID [2020-07-08 16:23:51,700 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {1923#true} {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #179#return; {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:51,701 INFO L280 TraceCheckUtils]: 12: Hoare triple {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume -2147483648 <= #t~ret1 && #t~ret1 <= 2147483647; {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:51,702 INFO L280 TraceCheckUtils]: 13: Hoare triple {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} havoc #t~ret1; {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:51,702 INFO L280 TraceCheckUtils]: 14: Hoare triple {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:51,703 INFO L280 TraceCheckUtils]: 15: Hoare triple {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume !!(0 != #t~nondet2); {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:51,704 INFO L280 TraceCheckUtils]: 16: Hoare triple {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} havoc #t~nondet2; {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:51,704 INFO L280 TraceCheckUtils]: 17: Hoare triple {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647; {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:51,705 INFO L280 TraceCheckUtils]: 18: Hoare triple {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #t~switch4 := 0 == #t~nondet3; {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:51,706 INFO L280 TraceCheckUtils]: 19: Hoare triple {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume !#t~switch4; {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:51,706 INFO L280 TraceCheckUtils]: 20: Hoare triple {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #t~switch4 := #t~switch4 || 1 == #t~nondet3; {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:51,707 INFO L280 TraceCheckUtils]: 21: Hoare triple {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume !#t~switch4; {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:51,708 INFO L280 TraceCheckUtils]: 22: Hoare triple {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #t~switch4 := #t~switch4 || 2 == #t~nondet3; {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:51,708 INFO L280 TraceCheckUtils]: 23: Hoare triple {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume !#t~switch4; {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:51,709 INFO L280 TraceCheckUtils]: 24: Hoare triple {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #t~switch4 := #t~switch4 || 3 == #t~nondet3; {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:51,710 INFO L280 TraceCheckUtils]: 25: Hoare triple {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume #t~switch4; {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:51,710 INFO L280 TraceCheckUtils]: 26: Hoare triple {1929#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume 3 == ~ldv_s_misc_fops_file_operations~0; {1924#false} is VALID [2020-07-08 16:23:51,711 INFO L263 TraceCheckUtils]: 27: Hoare triple {1924#false} call #t~ret11 := misc_release(); {1924#false} is VALID [2020-07-08 16:23:51,711 INFO L280 TraceCheckUtils]: 28: Hoare triple {1924#false} assume 0 != ~open_called~0; {1924#false} is VALID [2020-07-08 16:23:51,711 INFO L263 TraceCheckUtils]: 29: Hoare triple {1924#false} call mutex_lock(); {1940#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} is VALID [2020-07-08 16:23:51,712 INFO L280 TraceCheckUtils]: 30: Hoare triple {1940#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} assume 1 == ~ldv_mutex~0; {1923#true} is VALID [2020-07-08 16:23:51,712 INFO L280 TraceCheckUtils]: 31: Hoare triple {1923#true} ~ldv_mutex~0 := 2; {1923#true} is VALID [2020-07-08 16:23:51,712 INFO L280 TraceCheckUtils]: 32: Hoare triple {1923#true} assume true; {1923#true} is VALID [2020-07-08 16:23:51,712 INFO L275 TraceCheckUtils]: 33: Hoare quadruple {1923#true} {1924#false} #169#return; {1924#false} is VALID [2020-07-08 16:23:51,713 INFO L263 TraceCheckUtils]: 34: Hoare triple {1924#false} call mutex_unlock(); {1924#false} is VALID [2020-07-08 16:23:51,713 INFO L280 TraceCheckUtils]: 35: Hoare triple {1924#false} assume !(2 == ~ldv_mutex~0); {1924#false} is VALID [2020-07-08 16:23:51,713 INFO L263 TraceCheckUtils]: 36: Hoare triple {1924#false} call __blast_assert(); {1924#false} is VALID [2020-07-08 16:23:51,714 INFO L280 TraceCheckUtils]: 37: Hoare triple {1924#false} assume !false; {1924#false} is VALID [2020-07-08 16:23:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 16:23:51,716 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 16:23:51,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494838858] [2020-07-08 16:23:51,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 16:23:51,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-08 16:23:51,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636888487] [2020-07-08 16:23:51,717 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-07-08 16:23:51,718 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 16:23:51,718 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-08 16:23:51,757 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:23:51,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-08 16:23:51,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 16:23:51,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-08 16:23:51,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-08 16:23:51,759 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand 6 states. [2020-07-08 16:23:52,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:23:52,820 INFO L93 Difference]: Finished difference Result 411 states and 514 transitions. [2020-07-08 16:23:52,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-08 16:23:52,820 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-07-08 16:23:52,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 16:23:52,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 16:23:52,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 328 transitions. [2020-07-08 16:23:52,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 16:23:52,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 328 transitions. [2020-07-08 16:23:52,834 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 328 transitions. [2020-07-08 16:23:53,172 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 328 edges. 328 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:23:53,181 INFO L225 Difference]: With dead ends: 411 [2020-07-08 16:23:53,182 INFO L226 Difference]: Without dead ends: 265 [2020-07-08 16:23:53,184 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 [2020-07-08 16:23:53,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-07-08 16:23:53,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 200. [2020-07-08 16:23:53,444 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 16:23:53,444 INFO L82 GeneralOperation]: Start isEquivalent. First operand 265 states. Second operand 200 states. [2020-07-08 16:23:53,445 INFO L74 IsIncluded]: Start isIncluded. First operand 265 states. Second operand 200 states. [2020-07-08 16:23:53,445 INFO L87 Difference]: Start difference. First operand 265 states. Second operand 200 states. [2020-07-08 16:23:53,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:23:53,458 INFO L93 Difference]: Finished difference Result 265 states and 329 transitions. [2020-07-08 16:23:53,458 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 329 transitions. [2020-07-08 16:23:53,459 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 16:23:53,459 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 16:23:53,459 INFO L74 IsIncluded]: Start isIncluded. First operand 200 states. Second operand 265 states. [2020-07-08 16:23:53,460 INFO L87 Difference]: Start difference. First operand 200 states. Second operand 265 states. [2020-07-08 16:23:53,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:23:53,472 INFO L93 Difference]: Finished difference Result 265 states and 329 transitions. [2020-07-08 16:23:53,472 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 329 transitions. [2020-07-08 16:23:53,474 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 16:23:53,474 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 16:23:53,474 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 16:23:53,474 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 16:23:53,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-07-08 16:23:53,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 243 transitions. [2020-07-08 16:23:53,483 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 243 transitions. Word has length 38 [2020-07-08 16:23:53,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 16:23:53,483 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 243 transitions. [2020-07-08 16:23:53,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-08 16:23:53,484 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 200 states and 243 transitions. [2020-07-08 16:23:53,772 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 243 edges. 243 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:23:53,772 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 243 transitions. [2020-07-08 16:23:53,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-07-08 16:23:53,774 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 16:23:53,774 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 16:23:53,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-08 16:23:53,775 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 16:23:53,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 16:23:53,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1762986505, now seen corresponding path program 1 times [2020-07-08 16:23:53,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 16:23:53,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178332864] [2020-07-08 16:23:53,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 16:23:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:53,940 INFO L280 TraceCheckUtils]: 0: Hoare triple {3723#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1; {3699#true} is VALID [2020-07-08 16:23:53,940 INFO L280 TraceCheckUtils]: 1: Hoare triple {3699#true} ~open_called~0 := 0; {3699#true} is VALID [2020-07-08 16:23:53,941 INFO L280 TraceCheckUtils]: 2: Hoare triple {3699#true} assume true; {3699#true} is VALID [2020-07-08 16:23:53,941 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3699#true} {3699#true} #195#return; {3699#true} is VALID [2020-07-08 16:23:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:53,957 INFO L280 TraceCheckUtils]: 0: Hoare triple {3724#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0; {3699#true} is VALID [2020-07-08 16:23:53,957 INFO L280 TraceCheckUtils]: 1: Hoare triple {3699#true} #res := 0; {3699#true} is VALID [2020-07-08 16:23:53,958 INFO L280 TraceCheckUtils]: 2: Hoare triple {3699#true} assume true; {3699#true} is VALID [2020-07-08 16:23:53,959 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3699#true} {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} #179#return; {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} is VALID [2020-07-08 16:23:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:53,970 INFO L280 TraceCheckUtils]: 0: Hoare triple {3724#(= ~open_called~0 |old(~open_called~0)|)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {3699#true} is VALID [2020-07-08 16:23:53,971 INFO L280 TraceCheckUtils]: 1: Hoare triple {3699#true} assume 0 != #t~nondet0; {3699#true} is VALID [2020-07-08 16:23:53,971 INFO L280 TraceCheckUtils]: 2: Hoare triple {3699#true} havoc #t~nondet0; {3699#true} is VALID [2020-07-08 16:23:53,971 INFO L280 TraceCheckUtils]: 3: Hoare triple {3699#true} #res := 1; {3699#true} is VALID [2020-07-08 16:23:53,971 INFO L280 TraceCheckUtils]: 4: Hoare triple {3699#true} assume true; {3699#true} is VALID [2020-07-08 16:23:53,972 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {3699#true} {3710#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #181#return; {3710#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:53,988 INFO L280 TraceCheckUtils]: 0: Hoare triple {3725#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} assume 1 == ~ldv_mutex~0; {3699#true} is VALID [2020-07-08 16:23:53,989 INFO L280 TraceCheckUtils]: 1: Hoare triple {3699#true} ~ldv_mutex~0 := 2; {3699#true} is VALID [2020-07-08 16:23:53,989 INFO L280 TraceCheckUtils]: 2: Hoare triple {3699#true} assume true; {3699#true} is VALID [2020-07-08 16:23:53,989 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {3699#true} {3700#false} #169#return; {3700#false} is VALID [2020-07-08 16:23:53,997 INFO L263 TraceCheckUtils]: 0: Hoare triple {3699#true} call ULTIMATE.init(); {3723#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} is VALID [2020-07-08 16:23:53,997 INFO L280 TraceCheckUtils]: 1: Hoare triple {3723#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1; {3699#true} is VALID [2020-07-08 16:23:53,998 INFO L280 TraceCheckUtils]: 2: Hoare triple {3699#true} ~open_called~0 := 0; {3699#true} is VALID [2020-07-08 16:23:53,998 INFO L280 TraceCheckUtils]: 3: Hoare triple {3699#true} assume true; {3699#true} is VALID [2020-07-08 16:23:53,998 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {3699#true} {3699#true} #195#return; {3699#true} is VALID [2020-07-08 16:23:53,999 INFO L263 TraceCheckUtils]: 5: Hoare triple {3699#true} call #t~ret12 := main(); {3699#true} is VALID [2020-07-08 16:23:53,999 INFO L280 TraceCheckUtils]: 6: Hoare triple {3699#true} ~ldv_s_misc_fops_file_operations~0 := 0; {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} is VALID [2020-07-08 16:23:54,000 INFO L263 TraceCheckUtils]: 7: Hoare triple {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} call #t~ret1 := my_init(); {3724#(= ~open_called~0 |old(~open_called~0)|)} is VALID [2020-07-08 16:23:54,001 INFO L280 TraceCheckUtils]: 8: Hoare triple {3724#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0; {3699#true} is VALID [2020-07-08 16:23:54,001 INFO L280 TraceCheckUtils]: 9: Hoare triple {3699#true} #res := 0; {3699#true} is VALID [2020-07-08 16:23:54,001 INFO L280 TraceCheckUtils]: 10: Hoare triple {3699#true} assume true; {3699#true} is VALID [2020-07-08 16:23:54,002 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {3699#true} {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} #179#return; {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} is VALID [2020-07-08 16:23:54,003 INFO L280 TraceCheckUtils]: 12: Hoare triple {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} assume -2147483648 <= #t~ret1 && #t~ret1 <= 2147483647; {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} is VALID [2020-07-08 16:23:54,003 INFO L280 TraceCheckUtils]: 13: Hoare triple {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} havoc #t~ret1; {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} is VALID [2020-07-08 16:23:54,004 INFO L280 TraceCheckUtils]: 14: Hoare triple {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} is VALID [2020-07-08 16:23:54,004 INFO L280 TraceCheckUtils]: 15: Hoare triple {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} assume !!(0 != #t~nondet2); {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} is VALID [2020-07-08 16:23:54,005 INFO L280 TraceCheckUtils]: 16: Hoare triple {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} havoc #t~nondet2; {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} is VALID [2020-07-08 16:23:54,006 INFO L280 TraceCheckUtils]: 17: Hoare triple {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647; {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} is VALID [2020-07-08 16:23:54,006 INFO L280 TraceCheckUtils]: 18: Hoare triple {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} #t~switch4 := 0 == #t~nondet3; {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} is VALID [2020-07-08 16:23:54,007 INFO L280 TraceCheckUtils]: 19: Hoare triple {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} assume #t~switch4; {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} is VALID [2020-07-08 16:23:54,007 INFO L280 TraceCheckUtils]: 20: Hoare triple {3705#(= 0 main_~ldv_s_misc_fops_file_operations~0)} assume 0 == ~ldv_s_misc_fops_file_operations~0; {3710#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:54,008 INFO L263 TraceCheckUtils]: 21: Hoare triple {3710#(<= main_~ldv_s_misc_fops_file_operations~0 0)} call #t~ret5 := misc_open(); {3724#(= ~open_called~0 |old(~open_called~0)|)} is VALID [2020-07-08 16:23:54,008 INFO L280 TraceCheckUtils]: 22: Hoare triple {3724#(= ~open_called~0 |old(~open_called~0)|)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {3699#true} is VALID [2020-07-08 16:23:54,009 INFO L280 TraceCheckUtils]: 23: Hoare triple {3699#true} assume 0 != #t~nondet0; {3699#true} is VALID [2020-07-08 16:23:54,009 INFO L280 TraceCheckUtils]: 24: Hoare triple {3699#true} havoc #t~nondet0; {3699#true} is VALID [2020-07-08 16:23:54,009 INFO L280 TraceCheckUtils]: 25: Hoare triple {3699#true} #res := 1; {3699#true} is VALID [2020-07-08 16:23:54,009 INFO L280 TraceCheckUtils]: 26: Hoare triple {3699#true} assume true; {3699#true} is VALID [2020-07-08 16:23:54,010 INFO L275 TraceCheckUtils]: 27: Hoare quadruple {3699#true} {3710#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #181#return; {3710#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:54,011 INFO L280 TraceCheckUtils]: 28: Hoare triple {3710#(<= main_~ldv_s_misc_fops_file_operations~0 0)} assume -2147483648 <= #t~ret5 && #t~ret5 <= 2147483647; {3710#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:54,011 INFO L280 TraceCheckUtils]: 29: Hoare triple {3710#(<= main_~ldv_s_misc_fops_file_operations~0 0)} havoc #t~ret5; {3710#(<= main_~ldv_s_misc_fops_file_operations~0 0)} is VALID [2020-07-08 16:23:54,012 INFO L280 TraceCheckUtils]: 30: Hoare triple {3710#(<= main_~ldv_s_misc_fops_file_operations~0 0)} #t~post6 := ~ldv_s_misc_fops_file_operations~0; {3717#(<= |main_#t~post6| 0)} is VALID [2020-07-08 16:23:54,013 INFO L280 TraceCheckUtils]: 31: Hoare triple {3717#(<= |main_#t~post6| 0)} ~ldv_s_misc_fops_file_operations~0 := 1 + #t~post6; {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:54,014 INFO L280 TraceCheckUtils]: 32: Hoare triple {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} havoc #t~post6; {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:54,014 INFO L280 TraceCheckUtils]: 33: Hoare triple {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} havoc #t~switch4; {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:54,014 INFO L280 TraceCheckUtils]: 34: Hoare triple {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} havoc #t~nondet3; {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:54,015 INFO L280 TraceCheckUtils]: 35: Hoare triple {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:54,015 INFO L280 TraceCheckUtils]: 36: Hoare triple {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume !!(0 != #t~nondet2); {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:54,016 INFO L280 TraceCheckUtils]: 37: Hoare triple {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} havoc #t~nondet2; {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:54,016 INFO L280 TraceCheckUtils]: 38: Hoare triple {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647; {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:54,017 INFO L280 TraceCheckUtils]: 39: Hoare triple {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} #t~switch4 := 0 == #t~nondet3; {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:54,017 INFO L280 TraceCheckUtils]: 40: Hoare triple {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume !#t~switch4; {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:54,018 INFO L280 TraceCheckUtils]: 41: Hoare triple {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} #t~switch4 := #t~switch4 || 1 == #t~nondet3; {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:54,018 INFO L280 TraceCheckUtils]: 42: Hoare triple {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume !#t~switch4; {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:54,019 INFO L280 TraceCheckUtils]: 43: Hoare triple {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} #t~switch4 := #t~switch4 || 2 == #t~nondet3; {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:54,019 INFO L280 TraceCheckUtils]: 44: Hoare triple {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume !#t~switch4; {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:54,020 INFO L280 TraceCheckUtils]: 45: Hoare triple {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} #t~switch4 := #t~switch4 || 3 == #t~nondet3; {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:54,020 INFO L280 TraceCheckUtils]: 46: Hoare triple {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume #t~switch4; {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:54,021 INFO L280 TraceCheckUtils]: 47: Hoare triple {3718#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume 3 == ~ldv_s_misc_fops_file_operations~0; {3700#false} is VALID [2020-07-08 16:23:54,021 INFO L263 TraceCheckUtils]: 48: Hoare triple {3700#false} call #t~ret11 := misc_release(); {3700#false} is VALID [2020-07-08 16:23:54,021 INFO L280 TraceCheckUtils]: 49: Hoare triple {3700#false} assume 0 != ~open_called~0; {3700#false} is VALID [2020-07-08 16:23:54,022 INFO L263 TraceCheckUtils]: 50: Hoare triple {3700#false} call mutex_lock(); {3725#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} is VALID [2020-07-08 16:23:54,022 INFO L280 TraceCheckUtils]: 51: Hoare triple {3725#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} assume 1 == ~ldv_mutex~0; {3699#true} is VALID [2020-07-08 16:23:54,022 INFO L280 TraceCheckUtils]: 52: Hoare triple {3699#true} ~ldv_mutex~0 := 2; {3699#true} is VALID [2020-07-08 16:23:54,022 INFO L280 TraceCheckUtils]: 53: Hoare triple {3699#true} assume true; {3699#true} is VALID [2020-07-08 16:23:54,022 INFO L275 TraceCheckUtils]: 54: Hoare quadruple {3699#true} {3700#false} #169#return; {3700#false} is VALID [2020-07-08 16:23:54,023 INFO L263 TraceCheckUtils]: 55: Hoare triple {3700#false} call mutex_unlock(); {3700#false} is VALID [2020-07-08 16:23:54,023 INFO L280 TraceCheckUtils]: 56: Hoare triple {3700#false} assume !(2 == ~ldv_mutex~0); {3700#false} is VALID [2020-07-08 16:23:54,023 INFO L263 TraceCheckUtils]: 57: Hoare triple {3700#false} call __blast_assert(); {3700#false} is VALID [2020-07-08 16:23:54,023 INFO L280 TraceCheckUtils]: 58: Hoare triple {3700#false} assume !false; {3700#false} is VALID [2020-07-08 16:23:54,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 16:23:54,028 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 16:23:54,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178332864] [2020-07-08 16:23:54,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 16:23:54,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-08 16:23:54,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161064316] [2020-07-08 16:23:54,030 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-07-08 16:23:54,030 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 16:23:54,030 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states. [2020-07-08 16:23:54,097 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 59 edges. 59 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:23:54,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-08 16:23:54,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 16:23:54,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-08 16:23:54,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-08 16:23:54,099 INFO L87 Difference]: Start difference. First operand 200 states and 243 transitions. Second operand 9 states. [2020-07-08 16:23:55,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:23:55,830 INFO L93 Difference]: Finished difference Result 575 states and 738 transitions. [2020-07-08 16:23:55,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-08 16:23:55,830 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-07-08 16:23:55,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 16:23:55,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-08 16:23:55,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 444 transitions. [2020-07-08 16:23:55,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-08 16:23:55,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 444 transitions. [2020-07-08 16:23:55,850 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 16 states and 444 transitions. [2020-07-08 16:23:56,297 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 444 edges. 444 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:23:56,312 INFO L225 Difference]: With dead ends: 575 [2020-07-08 16:23:56,312 INFO L226 Difference]: Without dead ends: 389 [2020-07-08 16:23:56,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-07-08 16:23:56,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-07-08 16:23:56,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 280. [2020-07-08 16:23:56,708 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 16:23:56,709 INFO L82 GeneralOperation]: Start isEquivalent. First operand 389 states. Second operand 280 states. [2020-07-08 16:23:56,709 INFO L74 IsIncluded]: Start isIncluded. First operand 389 states. Second operand 280 states. [2020-07-08 16:23:56,709 INFO L87 Difference]: Start difference. First operand 389 states. Second operand 280 states. [2020-07-08 16:23:56,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:23:56,734 INFO L93 Difference]: Finished difference Result 389 states and 491 transitions. [2020-07-08 16:23:56,735 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 491 transitions. [2020-07-08 16:23:56,737 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 16:23:56,737 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 16:23:56,737 INFO L74 IsIncluded]: Start isIncluded. First operand 280 states. Second operand 389 states. [2020-07-08 16:23:56,738 INFO L87 Difference]: Start difference. First operand 280 states. Second operand 389 states. [2020-07-08 16:23:56,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:23:56,767 INFO L93 Difference]: Finished difference Result 389 states and 491 transitions. [2020-07-08 16:23:56,767 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 491 transitions. [2020-07-08 16:23:56,769 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 16:23:56,769 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 16:23:56,769 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 16:23:56,769 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 16:23:56,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-07-08 16:23:56,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 349 transitions. [2020-07-08 16:23:56,781 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 349 transitions. Word has length 59 [2020-07-08 16:23:56,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 16:23:56,781 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 349 transitions. [2020-07-08 16:23:56,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-08 16:23:56,781 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 280 states and 349 transitions. [2020-07-08 16:23:57,201 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 349 edges. 349 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:23:57,201 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 349 transitions. [2020-07-08 16:23:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-08 16:23:57,203 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 16:23:57,203 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 16:23:57,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-08 16:23:57,204 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 16:23:57,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 16:23:57,205 INFO L82 PathProgramCache]: Analyzing trace with hash -586168855, now seen corresponding path program 1 times [2020-07-08 16:23:57,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 16:23:57,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570512386] [2020-07-08 16:23:57,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 16:23:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:57,365 INFO L280 TraceCheckUtils]: 0: Hoare triple {6258#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1; {6232#true} is VALID [2020-07-08 16:23:57,365 INFO L280 TraceCheckUtils]: 1: Hoare triple {6232#true} ~open_called~0 := 0; {6232#true} is VALID [2020-07-08 16:23:57,365 INFO L280 TraceCheckUtils]: 2: Hoare triple {6232#true} assume true; {6232#true} is VALID [2020-07-08 16:23:57,366 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {6232#true} {6232#true} #195#return; {6232#true} is VALID [2020-07-08 16:23:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:57,381 INFO L280 TraceCheckUtils]: 0: Hoare triple {6259#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0; {6232#true} is VALID [2020-07-08 16:23:57,382 INFO L280 TraceCheckUtils]: 1: Hoare triple {6232#true} #res := 0; {6232#true} is VALID [2020-07-08 16:23:57,382 INFO L280 TraceCheckUtils]: 2: Hoare triple {6232#true} assume true; {6232#true} is VALID [2020-07-08 16:23:57,382 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {6232#true} {6232#true} #179#return; {6232#true} is VALID [2020-07-08 16:23:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:57,387 INFO L280 TraceCheckUtils]: 0: Hoare triple {6259#(= ~open_called~0 |old(~open_called~0)|)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {6232#true} is VALID [2020-07-08 16:23:57,387 INFO L280 TraceCheckUtils]: 1: Hoare triple {6232#true} assume 0 != #t~nondet0; {6232#true} is VALID [2020-07-08 16:23:57,387 INFO L280 TraceCheckUtils]: 2: Hoare triple {6232#true} havoc #t~nondet0; {6232#true} is VALID [2020-07-08 16:23:57,388 INFO L280 TraceCheckUtils]: 3: Hoare triple {6232#true} #res := 1; {6232#true} is VALID [2020-07-08 16:23:57,388 INFO L280 TraceCheckUtils]: 4: Hoare triple {6232#true} assume true; {6232#true} is VALID [2020-07-08 16:23:57,388 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {6232#true} {6232#true} #181#return; {6232#true} is VALID [2020-07-08 16:23:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:57,393 INFO L280 TraceCheckUtils]: 0: Hoare triple {6232#true} #res := 0; {6232#true} is VALID [2020-07-08 16:23:57,393 INFO L280 TraceCheckUtils]: 1: Hoare triple {6232#true} assume true; {6232#true} is VALID [2020-07-08 16:23:57,394 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {6232#true} {6248#(<= main_~ldv_s_misc_fops_file_operations~0 1)} #183#return; {6248#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:23:57,408 INFO L280 TraceCheckUtils]: 0: Hoare triple {6260#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} assume 1 == ~ldv_mutex~0; {6232#true} is VALID [2020-07-08 16:23:57,409 INFO L280 TraceCheckUtils]: 1: Hoare triple {6232#true} ~ldv_mutex~0 := 2; {6232#true} is VALID [2020-07-08 16:23:57,409 INFO L280 TraceCheckUtils]: 2: Hoare triple {6232#true} assume true; {6232#true} is VALID [2020-07-08 16:23:57,409 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {6232#true} {6233#false} #169#return; {6233#false} is VALID [2020-07-08 16:23:57,410 INFO L263 TraceCheckUtils]: 0: Hoare triple {6232#true} call ULTIMATE.init(); {6258#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} is VALID [2020-07-08 16:23:57,410 INFO L280 TraceCheckUtils]: 1: Hoare triple {6258#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1; {6232#true} is VALID [2020-07-08 16:23:57,411 INFO L280 TraceCheckUtils]: 2: Hoare triple {6232#true} ~open_called~0 := 0; {6232#true} is VALID [2020-07-08 16:23:57,411 INFO L280 TraceCheckUtils]: 3: Hoare triple {6232#true} assume true; {6232#true} is VALID [2020-07-08 16:23:57,411 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {6232#true} {6232#true} #195#return; {6232#true} is VALID [2020-07-08 16:23:57,412 INFO L263 TraceCheckUtils]: 5: Hoare triple {6232#true} call #t~ret12 := main(); {6232#true} is VALID [2020-07-08 16:23:57,412 INFO L280 TraceCheckUtils]: 6: Hoare triple {6232#true} ~ldv_s_misc_fops_file_operations~0 := 0; {6232#true} is VALID [2020-07-08 16:23:57,413 INFO L263 TraceCheckUtils]: 7: Hoare triple {6232#true} call #t~ret1 := my_init(); {6259#(= ~open_called~0 |old(~open_called~0)|)} is VALID [2020-07-08 16:23:57,413 INFO L280 TraceCheckUtils]: 8: Hoare triple {6259#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0; {6232#true} is VALID [2020-07-08 16:23:57,413 INFO L280 TraceCheckUtils]: 9: Hoare triple {6232#true} #res := 0; {6232#true} is VALID [2020-07-08 16:23:57,413 INFO L280 TraceCheckUtils]: 10: Hoare triple {6232#true} assume true; {6232#true} is VALID [2020-07-08 16:23:57,414 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {6232#true} {6232#true} #179#return; {6232#true} is VALID [2020-07-08 16:23:57,414 INFO L280 TraceCheckUtils]: 12: Hoare triple {6232#true} assume -2147483648 <= #t~ret1 && #t~ret1 <= 2147483647; {6232#true} is VALID [2020-07-08 16:23:57,414 INFO L280 TraceCheckUtils]: 13: Hoare triple {6232#true} havoc #t~ret1; {6232#true} is VALID [2020-07-08 16:23:57,415 INFO L280 TraceCheckUtils]: 14: Hoare triple {6232#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {6232#true} is VALID [2020-07-08 16:23:57,415 INFO L280 TraceCheckUtils]: 15: Hoare triple {6232#true} assume !!(0 != #t~nondet2); {6232#true} is VALID [2020-07-08 16:23:57,415 INFO L280 TraceCheckUtils]: 16: Hoare triple {6232#true} havoc #t~nondet2; {6232#true} is VALID [2020-07-08 16:23:57,415 INFO L280 TraceCheckUtils]: 17: Hoare triple {6232#true} assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647; {6232#true} is VALID [2020-07-08 16:23:57,416 INFO L280 TraceCheckUtils]: 18: Hoare triple {6232#true} #t~switch4 := 0 == #t~nondet3; {6232#true} is VALID [2020-07-08 16:23:57,416 INFO L280 TraceCheckUtils]: 19: Hoare triple {6232#true} assume #t~switch4; {6232#true} is VALID [2020-07-08 16:23:57,416 INFO L280 TraceCheckUtils]: 20: Hoare triple {6232#true} assume 0 == ~ldv_s_misc_fops_file_operations~0; {6232#true} is VALID [2020-07-08 16:23:57,417 INFO L263 TraceCheckUtils]: 21: Hoare triple {6232#true} call #t~ret5 := misc_open(); {6259#(= ~open_called~0 |old(~open_called~0)|)} is VALID [2020-07-08 16:23:57,417 INFO L280 TraceCheckUtils]: 22: Hoare triple {6259#(= ~open_called~0 |old(~open_called~0)|)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {6232#true} is VALID [2020-07-08 16:23:57,418 INFO L280 TraceCheckUtils]: 23: Hoare triple {6232#true} assume 0 != #t~nondet0; {6232#true} is VALID [2020-07-08 16:23:57,418 INFO L280 TraceCheckUtils]: 24: Hoare triple {6232#true} havoc #t~nondet0; {6232#true} is VALID [2020-07-08 16:23:57,418 INFO L280 TraceCheckUtils]: 25: Hoare triple {6232#true} #res := 1; {6232#true} is VALID [2020-07-08 16:23:57,419 INFO L280 TraceCheckUtils]: 26: Hoare triple {6232#true} assume true; {6232#true} is VALID [2020-07-08 16:23:57,419 INFO L275 TraceCheckUtils]: 27: Hoare quadruple {6232#true} {6232#true} #181#return; {6232#true} is VALID [2020-07-08 16:23:57,419 INFO L280 TraceCheckUtils]: 28: Hoare triple {6232#true} assume -2147483648 <= #t~ret5 && #t~ret5 <= 2147483647; {6232#true} is VALID [2020-07-08 16:23:57,419 INFO L280 TraceCheckUtils]: 29: Hoare triple {6232#true} havoc #t~ret5; {6232#true} is VALID [2020-07-08 16:23:57,420 INFO L280 TraceCheckUtils]: 30: Hoare triple {6232#true} #t~post6 := ~ldv_s_misc_fops_file_operations~0; {6232#true} is VALID [2020-07-08 16:23:57,420 INFO L280 TraceCheckUtils]: 31: Hoare triple {6232#true} ~ldv_s_misc_fops_file_operations~0 := 1 + #t~post6; {6232#true} is VALID [2020-07-08 16:23:57,420 INFO L280 TraceCheckUtils]: 32: Hoare triple {6232#true} havoc #t~post6; {6232#true} is VALID [2020-07-08 16:23:57,421 INFO L280 TraceCheckUtils]: 33: Hoare triple {6232#true} havoc #t~switch4; {6232#true} is VALID [2020-07-08 16:23:57,421 INFO L280 TraceCheckUtils]: 34: Hoare triple {6232#true} havoc #t~nondet3; {6232#true} is VALID [2020-07-08 16:23:57,421 INFO L280 TraceCheckUtils]: 35: Hoare triple {6232#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {6232#true} is VALID [2020-07-08 16:23:57,421 INFO L280 TraceCheckUtils]: 36: Hoare triple {6232#true} assume !!(0 != #t~nondet2); {6232#true} is VALID [2020-07-08 16:23:57,422 INFO L280 TraceCheckUtils]: 37: Hoare triple {6232#true} havoc #t~nondet2; {6232#true} is VALID [2020-07-08 16:23:57,422 INFO L280 TraceCheckUtils]: 38: Hoare triple {6232#true} assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647; {6232#true} is VALID [2020-07-08 16:23:57,422 INFO L280 TraceCheckUtils]: 39: Hoare triple {6232#true} #t~switch4 := 0 == #t~nondet3; {6232#true} is VALID [2020-07-08 16:23:57,423 INFO L280 TraceCheckUtils]: 40: Hoare triple {6232#true} assume !#t~switch4; {6232#true} is VALID [2020-07-08 16:23:57,423 INFO L280 TraceCheckUtils]: 41: Hoare triple {6232#true} #t~switch4 := #t~switch4 || 1 == #t~nondet3; {6232#true} is VALID [2020-07-08 16:23:57,423 INFO L280 TraceCheckUtils]: 42: Hoare triple {6232#true} assume #t~switch4; {6232#true} is VALID [2020-07-08 16:23:57,424 INFO L280 TraceCheckUtils]: 43: Hoare triple {6232#true} assume 1 == ~ldv_s_misc_fops_file_operations~0; {6248#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:57,425 INFO L263 TraceCheckUtils]: 44: Hoare triple {6248#(<= main_~ldv_s_misc_fops_file_operations~0 1)} call #t~ret7 := misc_read(); {6232#true} is VALID [2020-07-08 16:23:57,425 INFO L280 TraceCheckUtils]: 45: Hoare triple {6232#true} #res := 0; {6232#true} is VALID [2020-07-08 16:23:57,425 INFO L280 TraceCheckUtils]: 46: Hoare triple {6232#true} assume true; {6232#true} is VALID [2020-07-08 16:23:57,426 INFO L275 TraceCheckUtils]: 47: Hoare quadruple {6232#true} {6248#(<= main_~ldv_s_misc_fops_file_operations~0 1)} #183#return; {6248#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:57,427 INFO L280 TraceCheckUtils]: 48: Hoare triple {6248#(<= main_~ldv_s_misc_fops_file_operations~0 1)} assume -2147483648 <= #t~ret7 && #t~ret7 <= 2147483647; {6248#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:57,428 INFO L280 TraceCheckUtils]: 49: Hoare triple {6248#(<= main_~ldv_s_misc_fops_file_operations~0 1)} havoc #t~ret7; {6248#(<= main_~ldv_s_misc_fops_file_operations~0 1)} is VALID [2020-07-08 16:23:57,428 INFO L280 TraceCheckUtils]: 50: Hoare triple {6248#(<= main_~ldv_s_misc_fops_file_operations~0 1)} #t~post8 := ~ldv_s_misc_fops_file_operations~0; {6252#(<= |main_#t~post8| 1)} is VALID [2020-07-08 16:23:57,429 INFO L280 TraceCheckUtils]: 51: Hoare triple {6252#(<= |main_#t~post8| 1)} ~ldv_s_misc_fops_file_operations~0 := 1 + #t~post8; {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-08 16:23:57,430 INFO L280 TraceCheckUtils]: 52: Hoare triple {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} havoc #t~post8; {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-08 16:23:57,431 INFO L280 TraceCheckUtils]: 53: Hoare triple {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} havoc #t~switch4; {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-08 16:23:57,431 INFO L280 TraceCheckUtils]: 54: Hoare triple {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} havoc #t~nondet3; {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-08 16:23:57,432 INFO L280 TraceCheckUtils]: 55: Hoare triple {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-08 16:23:57,432 INFO L280 TraceCheckUtils]: 56: Hoare triple {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume !!(0 != #t~nondet2); {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-08 16:23:57,433 INFO L280 TraceCheckUtils]: 57: Hoare triple {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} havoc #t~nondet2; {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-08 16:23:57,434 INFO L280 TraceCheckUtils]: 58: Hoare triple {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647; {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-08 16:23:57,434 INFO L280 TraceCheckUtils]: 59: Hoare triple {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} #t~switch4 := 0 == #t~nondet3; {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-08 16:23:57,435 INFO L280 TraceCheckUtils]: 60: Hoare triple {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume !#t~switch4; {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-08 16:23:57,436 INFO L280 TraceCheckUtils]: 61: Hoare triple {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} #t~switch4 := #t~switch4 || 1 == #t~nondet3; {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-08 16:23:57,436 INFO L280 TraceCheckUtils]: 62: Hoare triple {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume !#t~switch4; {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-08 16:23:57,437 INFO L280 TraceCheckUtils]: 63: Hoare triple {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} #t~switch4 := #t~switch4 || 2 == #t~nondet3; {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-08 16:23:57,437 INFO L280 TraceCheckUtils]: 64: Hoare triple {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume !#t~switch4; {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-08 16:23:57,438 INFO L280 TraceCheckUtils]: 65: Hoare triple {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} #t~switch4 := #t~switch4 || 3 == #t~nondet3; {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-08 16:23:57,439 INFO L280 TraceCheckUtils]: 66: Hoare triple {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume #t~switch4; {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} is VALID [2020-07-08 16:23:57,439 INFO L280 TraceCheckUtils]: 67: Hoare triple {6253#(<= main_~ldv_s_misc_fops_file_operations~0 2)} assume 3 == ~ldv_s_misc_fops_file_operations~0; {6233#false} is VALID [2020-07-08 16:23:57,440 INFO L263 TraceCheckUtils]: 68: Hoare triple {6233#false} call #t~ret11 := misc_release(); {6233#false} is VALID [2020-07-08 16:23:57,440 INFO L280 TraceCheckUtils]: 69: Hoare triple {6233#false} assume 0 != ~open_called~0; {6233#false} is VALID [2020-07-08 16:23:57,440 INFO L263 TraceCheckUtils]: 70: Hoare triple {6233#false} call mutex_lock(); {6260#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} is VALID [2020-07-08 16:23:57,441 INFO L280 TraceCheckUtils]: 71: Hoare triple {6260#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} assume 1 == ~ldv_mutex~0; {6232#true} is VALID [2020-07-08 16:23:57,441 INFO L280 TraceCheckUtils]: 72: Hoare triple {6232#true} ~ldv_mutex~0 := 2; {6232#true} is VALID [2020-07-08 16:23:57,441 INFO L280 TraceCheckUtils]: 73: Hoare triple {6232#true} assume true; {6232#true} is VALID [2020-07-08 16:23:57,441 INFO L275 TraceCheckUtils]: 74: Hoare quadruple {6232#true} {6233#false} #169#return; {6233#false} is VALID [2020-07-08 16:23:57,442 INFO L263 TraceCheckUtils]: 75: Hoare triple {6233#false} call mutex_unlock(); {6233#false} is VALID [2020-07-08 16:23:57,442 INFO L280 TraceCheckUtils]: 76: Hoare triple {6233#false} assume !(2 == ~ldv_mutex~0); {6233#false} is VALID [2020-07-08 16:23:57,442 INFO L263 TraceCheckUtils]: 77: Hoare triple {6233#false} call __blast_assert(); {6233#false} is VALID [2020-07-08 16:23:57,442 INFO L280 TraceCheckUtils]: 78: Hoare triple {6233#false} assume !false; {6233#false} is VALID [2020-07-08 16:23:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 16:23:57,448 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 16:23:57,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570512386] [2020-07-08 16:23:57,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 16:23:57,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-08 16:23:57,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315806657] [2020-07-08 16:23:57,450 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-07-08 16:23:57,450 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 16:23:57,450 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2020-07-08 16:23:57,519 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 74 edges. 74 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:23:57,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-08 16:23:57,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 16:23:57,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-08 16:23:57,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-08 16:23:57,520 INFO L87 Difference]: Start difference. First operand 280 states and 349 transitions. Second operand 8 states. [2020-07-08 16:23:59,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:23:59,426 INFO L93 Difference]: Finished difference Result 773 states and 1000 transitions. [2020-07-08 16:23:59,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-08 16:23:59,426 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-07-08 16:23:59,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 16:23:59,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-08 16:23:59,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 389 transitions. [2020-07-08 16:23:59,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-08 16:23:59,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 389 transitions. [2020-07-08 16:23:59,439 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 14 states and 389 transitions. [2020-07-08 16:23:59,842 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 389 edges. 389 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:23:59,859 INFO L225 Difference]: With dead ends: 773 [2020-07-08 16:23:59,859 INFO L226 Difference]: Without dead ends: 507 [2020-07-08 16:23:59,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-07-08 16:23:59,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-07-08 16:24:00,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 360. [2020-07-08 16:24:00,391 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 16:24:00,391 INFO L82 GeneralOperation]: Start isEquivalent. First operand 507 states. Second operand 360 states. [2020-07-08 16:24:00,391 INFO L74 IsIncluded]: Start isIncluded. First operand 507 states. Second operand 360 states. [2020-07-08 16:24:00,391 INFO L87 Difference]: Start difference. First operand 507 states. Second operand 360 states. [2020-07-08 16:24:00,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:24:00,413 INFO L93 Difference]: Finished difference Result 507 states and 656 transitions. [2020-07-08 16:24:00,413 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 656 transitions. [2020-07-08 16:24:00,417 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 16:24:00,417 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 16:24:00,417 INFO L74 IsIncluded]: Start isIncluded. First operand 360 states. Second operand 507 states. [2020-07-08 16:24:00,417 INFO L87 Difference]: Start difference. First operand 360 states. Second operand 507 states. [2020-07-08 16:24:00,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:24:00,437 INFO L93 Difference]: Finished difference Result 507 states and 656 transitions. [2020-07-08 16:24:00,437 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 656 transitions. [2020-07-08 16:24:00,440 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 16:24:00,441 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 16:24:00,441 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 16:24:00,441 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 16:24:00,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-07-08 16:24:00,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 461 transitions. [2020-07-08 16:24:00,454 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 461 transitions. Word has length 79 [2020-07-08 16:24:00,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 16:24:00,455 INFO L479 AbstractCegarLoop]: Abstraction has 360 states and 461 transitions. [2020-07-08 16:24:00,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-08 16:24:00,455 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 360 states and 461 transitions. [2020-07-08 16:24:01,037 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 461 edges. 461 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:24:01,038 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 461 transitions. [2020-07-08 16:24:01,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-07-08 16:24:01,041 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 16:24:01,041 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 16:24:01,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-08 16:24:01,043 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 16:24:01,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 16:24:01,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1731656998, now seen corresponding path program 1 times [2020-07-08 16:24:01,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 16:24:01,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442976372] [2020-07-08 16:24:01,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 16:24:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:24:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:24:01,206 INFO L280 TraceCheckUtils]: 0: Hoare triple {9586#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1; {9559#true} is VALID [2020-07-08 16:24:01,206 INFO L280 TraceCheckUtils]: 1: Hoare triple {9559#true} ~open_called~0 := 0; {9559#true} is VALID [2020-07-08 16:24:01,207 INFO L280 TraceCheckUtils]: 2: Hoare triple {9559#true} assume true; {9559#true} is VALID [2020-07-08 16:24:01,207 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {9559#true} {9559#true} #195#return; {9559#true} is VALID [2020-07-08 16:24:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:24:01,221 INFO L280 TraceCheckUtils]: 0: Hoare triple {9587#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0; {9559#true} is VALID [2020-07-08 16:24:01,221 INFO L280 TraceCheckUtils]: 1: Hoare triple {9559#true} #res := 0; {9559#true} is VALID [2020-07-08 16:24:01,221 INFO L280 TraceCheckUtils]: 2: Hoare triple {9559#true} assume true; {9559#true} is VALID [2020-07-08 16:24:01,222 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {9559#true} {9559#true} #179#return; {9559#true} is VALID [2020-07-08 16:24:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:24:01,228 INFO L280 TraceCheckUtils]: 0: Hoare triple {9587#(= ~open_called~0 |old(~open_called~0)|)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {9559#true} is VALID [2020-07-08 16:24:01,228 INFO L280 TraceCheckUtils]: 1: Hoare triple {9559#true} assume 0 != #t~nondet0; {9559#true} is VALID [2020-07-08 16:24:01,228 INFO L280 TraceCheckUtils]: 2: Hoare triple {9559#true} havoc #t~nondet0; {9559#true} is VALID [2020-07-08 16:24:01,229 INFO L280 TraceCheckUtils]: 3: Hoare triple {9559#true} #res := 1; {9559#true} is VALID [2020-07-08 16:24:01,229 INFO L280 TraceCheckUtils]: 4: Hoare triple {9559#true} assume true; {9559#true} is VALID [2020-07-08 16:24:01,230 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {9559#true} {9559#true} #181#return; {9559#true} is VALID [2020-07-08 16:24:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:24:01,234 INFO L280 TraceCheckUtils]: 0: Hoare triple {9559#true} #res := 0; {9559#true} is VALID [2020-07-08 16:24:01,234 INFO L280 TraceCheckUtils]: 1: Hoare triple {9559#true} assume true; {9559#true} is VALID [2020-07-08 16:24:01,235 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {9559#true} {9559#true} #183#return; {9559#true} is VALID [2020-07-08 16:24:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:24:01,238 INFO L280 TraceCheckUtils]: 0: Hoare triple {9559#true} #res := 0; {9559#true} is VALID [2020-07-08 16:24:01,239 INFO L280 TraceCheckUtils]: 1: Hoare triple {9559#true} assume true; {9559#true} is VALID [2020-07-08 16:24:01,239 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {9559#true} {9559#true} #185#return; {9559#true} is VALID [2020-07-08 16:24:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:24:01,259 INFO L280 TraceCheckUtils]: 0: Hoare triple {9588#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} assume 1 == ~ldv_mutex~0; {9559#true} is VALID [2020-07-08 16:24:01,260 INFO L280 TraceCheckUtils]: 1: Hoare triple {9559#true} ~ldv_mutex~0 := 2; {9585#(= 2 ~ldv_mutex~0)} is VALID [2020-07-08 16:24:01,260 INFO L280 TraceCheckUtils]: 2: Hoare triple {9585#(= 2 ~ldv_mutex~0)} assume true; {9585#(= 2 ~ldv_mutex~0)} is VALID [2020-07-08 16:24:01,261 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {9585#(= 2 ~ldv_mutex~0)} {9559#true} #169#return; {9585#(= 2 ~ldv_mutex~0)} is VALID [2020-07-08 16:24:01,262 INFO L263 TraceCheckUtils]: 0: Hoare triple {9559#true} call ULTIMATE.init(); {9586#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} is VALID [2020-07-08 16:24:01,262 INFO L280 TraceCheckUtils]: 1: Hoare triple {9586#(and (= ~open_called~0 |old(~open_called~0)|) (= ~ldv_mutex~0 |old(~ldv_mutex~0)|))} ~ldv_mutex~0 := 1; {9559#true} is VALID [2020-07-08 16:24:01,263 INFO L280 TraceCheckUtils]: 2: Hoare triple {9559#true} ~open_called~0 := 0; {9559#true} is VALID [2020-07-08 16:24:01,263 INFO L280 TraceCheckUtils]: 3: Hoare triple {9559#true} assume true; {9559#true} is VALID [2020-07-08 16:24:01,263 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {9559#true} {9559#true} #195#return; {9559#true} is VALID [2020-07-08 16:24:01,264 INFO L263 TraceCheckUtils]: 5: Hoare triple {9559#true} call #t~ret12 := main(); {9559#true} is VALID [2020-07-08 16:24:01,264 INFO L280 TraceCheckUtils]: 6: Hoare triple {9559#true} ~ldv_s_misc_fops_file_operations~0 := 0; {9559#true} is VALID [2020-07-08 16:24:01,265 INFO L263 TraceCheckUtils]: 7: Hoare triple {9559#true} call #t~ret1 := my_init(); {9587#(= ~open_called~0 |old(~open_called~0)|)} is VALID [2020-07-08 16:24:01,265 INFO L280 TraceCheckUtils]: 8: Hoare triple {9587#(= ~open_called~0 |old(~open_called~0)|)} ~open_called~0 := 0; {9559#true} is VALID [2020-07-08 16:24:01,265 INFO L280 TraceCheckUtils]: 9: Hoare triple {9559#true} #res := 0; {9559#true} is VALID [2020-07-08 16:24:01,266 INFO L280 TraceCheckUtils]: 10: Hoare triple {9559#true} assume true; {9559#true} is VALID [2020-07-08 16:24:01,266 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {9559#true} {9559#true} #179#return; {9559#true} is VALID [2020-07-08 16:24:01,266 INFO L280 TraceCheckUtils]: 12: Hoare triple {9559#true} assume -2147483648 <= #t~ret1 && #t~ret1 <= 2147483647; {9559#true} is VALID [2020-07-08 16:24:01,266 INFO L280 TraceCheckUtils]: 13: Hoare triple {9559#true} havoc #t~ret1; {9559#true} is VALID [2020-07-08 16:24:01,267 INFO L280 TraceCheckUtils]: 14: Hoare triple {9559#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {9559#true} is VALID [2020-07-08 16:24:01,267 INFO L280 TraceCheckUtils]: 15: Hoare triple {9559#true} assume !!(0 != #t~nondet2); {9559#true} is VALID [2020-07-08 16:24:01,267 INFO L280 TraceCheckUtils]: 16: Hoare triple {9559#true} havoc #t~nondet2; {9559#true} is VALID [2020-07-08 16:24:01,267 INFO L280 TraceCheckUtils]: 17: Hoare triple {9559#true} assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647; {9559#true} is VALID [2020-07-08 16:24:01,268 INFO L280 TraceCheckUtils]: 18: Hoare triple {9559#true} #t~switch4 := 0 == #t~nondet3; {9559#true} is VALID [2020-07-08 16:24:01,268 INFO L280 TraceCheckUtils]: 19: Hoare triple {9559#true} assume #t~switch4; {9559#true} is VALID [2020-07-08 16:24:01,268 INFO L280 TraceCheckUtils]: 20: Hoare triple {9559#true} assume 0 == ~ldv_s_misc_fops_file_operations~0; {9559#true} is VALID [2020-07-08 16:24:01,269 INFO L263 TraceCheckUtils]: 21: Hoare triple {9559#true} call #t~ret5 := misc_open(); {9587#(= ~open_called~0 |old(~open_called~0)|)} is VALID [2020-07-08 16:24:01,269 INFO L280 TraceCheckUtils]: 22: Hoare triple {9587#(= ~open_called~0 |old(~open_called~0)|)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {9559#true} is VALID [2020-07-08 16:24:01,269 INFO L280 TraceCheckUtils]: 23: Hoare triple {9559#true} assume 0 != #t~nondet0; {9559#true} is VALID [2020-07-08 16:24:01,270 INFO L280 TraceCheckUtils]: 24: Hoare triple {9559#true} havoc #t~nondet0; {9559#true} is VALID [2020-07-08 16:24:01,270 INFO L280 TraceCheckUtils]: 25: Hoare triple {9559#true} #res := 1; {9559#true} is VALID [2020-07-08 16:24:01,270 INFO L280 TraceCheckUtils]: 26: Hoare triple {9559#true} assume true; {9559#true} is VALID [2020-07-08 16:24:01,270 INFO L275 TraceCheckUtils]: 27: Hoare quadruple {9559#true} {9559#true} #181#return; {9559#true} is VALID [2020-07-08 16:24:01,271 INFO L280 TraceCheckUtils]: 28: Hoare triple {9559#true} assume -2147483648 <= #t~ret5 && #t~ret5 <= 2147483647; {9559#true} is VALID [2020-07-08 16:24:01,271 INFO L280 TraceCheckUtils]: 29: Hoare triple {9559#true} havoc #t~ret5; {9559#true} is VALID [2020-07-08 16:24:01,271 INFO L280 TraceCheckUtils]: 30: Hoare triple {9559#true} #t~post6 := ~ldv_s_misc_fops_file_operations~0; {9559#true} is VALID [2020-07-08 16:24:01,271 INFO L280 TraceCheckUtils]: 31: Hoare triple {9559#true} ~ldv_s_misc_fops_file_operations~0 := 1 + #t~post6; {9559#true} is VALID [2020-07-08 16:24:01,272 INFO L280 TraceCheckUtils]: 32: Hoare triple {9559#true} havoc #t~post6; {9559#true} is VALID [2020-07-08 16:24:01,272 INFO L280 TraceCheckUtils]: 33: Hoare triple {9559#true} havoc #t~switch4; {9559#true} is VALID [2020-07-08 16:24:01,272 INFO L280 TraceCheckUtils]: 34: Hoare triple {9559#true} havoc #t~nondet3; {9559#true} is VALID [2020-07-08 16:24:01,273 INFO L280 TraceCheckUtils]: 35: Hoare triple {9559#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {9559#true} is VALID [2020-07-08 16:24:01,273 INFO L280 TraceCheckUtils]: 36: Hoare triple {9559#true} assume !!(0 != #t~nondet2); {9559#true} is VALID [2020-07-08 16:24:01,274 INFO L280 TraceCheckUtils]: 37: Hoare triple {9559#true} havoc #t~nondet2; {9559#true} is VALID [2020-07-08 16:24:01,274 INFO L280 TraceCheckUtils]: 38: Hoare triple {9559#true} assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647; {9559#true} is VALID [2020-07-08 16:24:01,274 INFO L280 TraceCheckUtils]: 39: Hoare triple {9559#true} #t~switch4 := 0 == #t~nondet3; {9559#true} is VALID [2020-07-08 16:24:01,275 INFO L280 TraceCheckUtils]: 40: Hoare triple {9559#true} assume !#t~switch4; {9559#true} is VALID [2020-07-08 16:24:01,275 INFO L280 TraceCheckUtils]: 41: Hoare triple {9559#true} #t~switch4 := #t~switch4 || 1 == #t~nondet3; {9559#true} is VALID [2020-07-08 16:24:01,275 INFO L280 TraceCheckUtils]: 42: Hoare triple {9559#true} assume #t~switch4; {9559#true} is VALID [2020-07-08 16:24:01,275 INFO L280 TraceCheckUtils]: 43: Hoare triple {9559#true} assume 1 == ~ldv_s_misc_fops_file_operations~0; {9559#true} is VALID [2020-07-08 16:24:01,276 INFO L263 TraceCheckUtils]: 44: Hoare triple {9559#true} call #t~ret7 := misc_read(); {9559#true} is VALID [2020-07-08 16:24:01,276 INFO L280 TraceCheckUtils]: 45: Hoare triple {9559#true} #res := 0; {9559#true} is VALID [2020-07-08 16:24:01,276 INFO L280 TraceCheckUtils]: 46: Hoare triple {9559#true} assume true; {9559#true} is VALID [2020-07-08 16:24:01,276 INFO L275 TraceCheckUtils]: 47: Hoare quadruple {9559#true} {9559#true} #183#return; {9559#true} is VALID [2020-07-08 16:24:01,276 INFO L280 TraceCheckUtils]: 48: Hoare triple {9559#true} assume -2147483648 <= #t~ret7 && #t~ret7 <= 2147483647; {9559#true} is VALID [2020-07-08 16:24:01,277 INFO L280 TraceCheckUtils]: 49: Hoare triple {9559#true} havoc #t~ret7; {9559#true} is VALID [2020-07-08 16:24:01,277 INFO L280 TraceCheckUtils]: 50: Hoare triple {9559#true} #t~post8 := ~ldv_s_misc_fops_file_operations~0; {9559#true} is VALID [2020-07-08 16:24:01,277 INFO L280 TraceCheckUtils]: 51: Hoare triple {9559#true} ~ldv_s_misc_fops_file_operations~0 := 1 + #t~post8; {9559#true} is VALID [2020-07-08 16:24:01,277 INFO L280 TraceCheckUtils]: 52: Hoare triple {9559#true} havoc #t~post8; {9559#true} is VALID [2020-07-08 16:24:01,278 INFO L280 TraceCheckUtils]: 53: Hoare triple {9559#true} havoc #t~switch4; {9559#true} is VALID [2020-07-08 16:24:01,278 INFO L280 TraceCheckUtils]: 54: Hoare triple {9559#true} havoc #t~nondet3; {9559#true} is VALID [2020-07-08 16:24:01,278 INFO L280 TraceCheckUtils]: 55: Hoare triple {9559#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {9559#true} is VALID [2020-07-08 16:24:01,278 INFO L280 TraceCheckUtils]: 56: Hoare triple {9559#true} assume !!(0 != #t~nondet2); {9559#true} is VALID [2020-07-08 16:24:01,279 INFO L280 TraceCheckUtils]: 57: Hoare triple {9559#true} havoc #t~nondet2; {9559#true} is VALID [2020-07-08 16:24:01,279 INFO L280 TraceCheckUtils]: 58: Hoare triple {9559#true} assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647; {9559#true} is VALID [2020-07-08 16:24:01,279 INFO L280 TraceCheckUtils]: 59: Hoare triple {9559#true} #t~switch4 := 0 == #t~nondet3; {9559#true} is VALID [2020-07-08 16:24:01,279 INFO L280 TraceCheckUtils]: 60: Hoare triple {9559#true} assume !#t~switch4; {9559#true} is VALID [2020-07-08 16:24:01,279 INFO L280 TraceCheckUtils]: 61: Hoare triple {9559#true} #t~switch4 := #t~switch4 || 1 == #t~nondet3; {9559#true} is VALID [2020-07-08 16:24:01,280 INFO L280 TraceCheckUtils]: 62: Hoare triple {9559#true} assume !#t~switch4; {9559#true} is VALID [2020-07-08 16:24:01,280 INFO L280 TraceCheckUtils]: 63: Hoare triple {9559#true} #t~switch4 := #t~switch4 || 2 == #t~nondet3; {9559#true} is VALID [2020-07-08 16:24:01,281 INFO L280 TraceCheckUtils]: 64: Hoare triple {9559#true} assume #t~switch4; {9559#true} is VALID [2020-07-08 16:24:01,281 INFO L280 TraceCheckUtils]: 65: Hoare triple {9559#true} assume 2 == ~ldv_s_misc_fops_file_operations~0; {9559#true} is VALID [2020-07-08 16:24:01,281 INFO L263 TraceCheckUtils]: 66: Hoare triple {9559#true} call #t~ret9 := misc_llseek(); {9559#true} is VALID [2020-07-08 16:24:01,282 INFO L280 TraceCheckUtils]: 67: Hoare triple {9559#true} #res := 0; {9559#true} is VALID [2020-07-08 16:24:01,282 INFO L280 TraceCheckUtils]: 68: Hoare triple {9559#true} assume true; {9559#true} is VALID [2020-07-08 16:24:01,282 INFO L275 TraceCheckUtils]: 69: Hoare quadruple {9559#true} {9559#true} #185#return; {9559#true} is VALID [2020-07-08 16:24:01,283 INFO L280 TraceCheckUtils]: 70: Hoare triple {9559#true} assume -2147483648 <= #t~ret9 && #t~ret9 <= 2147483647; {9559#true} is VALID [2020-07-08 16:24:01,283 INFO L280 TraceCheckUtils]: 71: Hoare triple {9559#true} havoc #t~ret9; {9559#true} is VALID [2020-07-08 16:24:01,284 INFO L280 TraceCheckUtils]: 72: Hoare triple {9559#true} #t~post10 := ~ldv_s_misc_fops_file_operations~0; {9559#true} is VALID [2020-07-08 16:24:01,284 INFO L280 TraceCheckUtils]: 73: Hoare triple {9559#true} ~ldv_s_misc_fops_file_operations~0 := 1 + #t~post10; {9559#true} is VALID [2020-07-08 16:24:01,284 INFO L280 TraceCheckUtils]: 74: Hoare triple {9559#true} havoc #t~post10; {9559#true} is VALID [2020-07-08 16:24:01,284 INFO L280 TraceCheckUtils]: 75: Hoare triple {9559#true} havoc #t~switch4; {9559#true} is VALID [2020-07-08 16:24:01,285 INFO L280 TraceCheckUtils]: 76: Hoare triple {9559#true} havoc #t~nondet3; {9559#true} is VALID [2020-07-08 16:24:01,285 INFO L280 TraceCheckUtils]: 77: Hoare triple {9559#true} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {9559#true} is VALID [2020-07-08 16:24:01,285 INFO L280 TraceCheckUtils]: 78: Hoare triple {9559#true} assume !!(0 != #t~nondet2); {9559#true} is VALID [2020-07-08 16:24:01,285 INFO L280 TraceCheckUtils]: 79: Hoare triple {9559#true} havoc #t~nondet2; {9559#true} is VALID [2020-07-08 16:24:01,286 INFO L280 TraceCheckUtils]: 80: Hoare triple {9559#true} assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647; {9559#true} is VALID [2020-07-08 16:24:01,286 INFO L280 TraceCheckUtils]: 81: Hoare triple {9559#true} #t~switch4 := 0 == #t~nondet3; {9559#true} is VALID [2020-07-08 16:24:01,286 INFO L280 TraceCheckUtils]: 82: Hoare triple {9559#true} assume !#t~switch4; {9559#true} is VALID [2020-07-08 16:24:01,286 INFO L280 TraceCheckUtils]: 83: Hoare triple {9559#true} #t~switch4 := #t~switch4 || 1 == #t~nondet3; {9559#true} is VALID [2020-07-08 16:24:01,287 INFO L280 TraceCheckUtils]: 84: Hoare triple {9559#true} assume !#t~switch4; {9559#true} is VALID [2020-07-08 16:24:01,287 INFO L280 TraceCheckUtils]: 85: Hoare triple {9559#true} #t~switch4 := #t~switch4 || 2 == #t~nondet3; {9559#true} is VALID [2020-07-08 16:24:01,287 INFO L280 TraceCheckUtils]: 86: Hoare triple {9559#true} assume !#t~switch4; {9559#true} is VALID [2020-07-08 16:24:01,287 INFO L280 TraceCheckUtils]: 87: Hoare triple {9559#true} #t~switch4 := #t~switch4 || 3 == #t~nondet3; {9559#true} is VALID [2020-07-08 16:24:01,287 INFO L280 TraceCheckUtils]: 88: Hoare triple {9559#true} assume #t~switch4; {9559#true} is VALID [2020-07-08 16:24:01,288 INFO L280 TraceCheckUtils]: 89: Hoare triple {9559#true} assume 3 == ~ldv_s_misc_fops_file_operations~0; {9559#true} is VALID [2020-07-08 16:24:01,288 INFO L263 TraceCheckUtils]: 90: Hoare triple {9559#true} call #t~ret11 := misc_release(); {9559#true} is VALID [2020-07-08 16:24:01,288 INFO L280 TraceCheckUtils]: 91: Hoare triple {9559#true} assume 0 != ~open_called~0; {9559#true} is VALID [2020-07-08 16:24:01,289 INFO L263 TraceCheckUtils]: 92: Hoare triple {9559#true} call mutex_lock(); {9588#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} is VALID [2020-07-08 16:24:01,289 INFO L280 TraceCheckUtils]: 93: Hoare triple {9588#(= ~ldv_mutex~0 |old(~ldv_mutex~0)|)} assume 1 == ~ldv_mutex~0; {9559#true} is VALID [2020-07-08 16:24:01,290 INFO L280 TraceCheckUtils]: 94: Hoare triple {9559#true} ~ldv_mutex~0 := 2; {9585#(= 2 ~ldv_mutex~0)} is VALID [2020-07-08 16:24:01,290 INFO L280 TraceCheckUtils]: 95: Hoare triple {9585#(= 2 ~ldv_mutex~0)} assume true; {9585#(= 2 ~ldv_mutex~0)} is VALID [2020-07-08 16:24:01,291 INFO L275 TraceCheckUtils]: 96: Hoare quadruple {9585#(= 2 ~ldv_mutex~0)} {9559#true} #169#return; {9585#(= 2 ~ldv_mutex~0)} is VALID [2020-07-08 16:24:01,292 INFO L263 TraceCheckUtils]: 97: Hoare triple {9585#(= 2 ~ldv_mutex~0)} call mutex_unlock(); {9585#(= 2 ~ldv_mutex~0)} is VALID [2020-07-08 16:24:01,292 INFO L280 TraceCheckUtils]: 98: Hoare triple {9585#(= 2 ~ldv_mutex~0)} assume !(2 == ~ldv_mutex~0); {9560#false} is VALID [2020-07-08 16:24:01,293 INFO L263 TraceCheckUtils]: 99: Hoare triple {9560#false} call __blast_assert(); {9560#false} is VALID [2020-07-08 16:24:01,293 INFO L280 TraceCheckUtils]: 100: Hoare triple {9560#false} assume !false; {9560#false} is VALID [2020-07-08 16:24:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 16:24:01,306 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 16:24:01,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442976372] [2020-07-08 16:24:01,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 16:24:01,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-08 16:24:01,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48667167] [2020-07-08 16:24:01,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-07-08 16:24:01,308 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 16:24:01,308 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-08 16:24:01,402 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 76 edges. 76 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:24:01,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-08 16:24:01,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 16:24:01,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-08 16:24:01,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-08 16:24:01,403 INFO L87 Difference]: Start difference. First operand 360 states and 461 transitions. Second operand 6 states. [2020-07-08 16:24:02,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:24:02,599 INFO L93 Difference]: Finished difference Result 679 states and 876 transitions. [2020-07-08 16:24:02,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-08 16:24:02,599 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-07-08 16:24:02,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 16:24:02,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 16:24:02,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 260 transitions. [2020-07-08 16:24:02,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 16:24:02,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 260 transitions. [2020-07-08 16:24:02,607 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 260 transitions. [2020-07-08 16:24:02,835 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 260 edges. 260 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:24:02,845 INFO L225 Difference]: With dead ends: 679 [2020-07-08 16:24:02,845 INFO L226 Difference]: Without dead ends: 333 [2020-07-08 16:24:02,847 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 [2020-07-08 16:24:02,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-07-08 16:24:03,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 192. [2020-07-08 16:24:03,185 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 16:24:03,185 INFO L82 GeneralOperation]: Start isEquivalent. First operand 333 states. Second operand 192 states. [2020-07-08 16:24:03,185 INFO L74 IsIncluded]: Start isIncluded. First operand 333 states. Second operand 192 states. [2020-07-08 16:24:03,185 INFO L87 Difference]: Start difference. First operand 333 states. Second operand 192 states. [2020-07-08 16:24:03,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:24:03,196 INFO L93 Difference]: Finished difference Result 333 states and 424 transitions. [2020-07-08 16:24:03,196 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 424 transitions. [2020-07-08 16:24:03,197 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 16:24:03,197 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 16:24:03,197 INFO L74 IsIncluded]: Start isIncluded. First operand 192 states. Second operand 333 states. [2020-07-08 16:24:03,198 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 333 states. [2020-07-08 16:24:03,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:24:03,210 INFO L93 Difference]: Finished difference Result 333 states and 424 transitions. [2020-07-08 16:24:03,210 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 424 transitions. [2020-07-08 16:24:03,211 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 16:24:03,211 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 16:24:03,211 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 16:24:03,212 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 16:24:03,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-07-08 16:24:03,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 236 transitions. [2020-07-08 16:24:03,217 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 236 transitions. Word has length 101 [2020-07-08 16:24:03,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 16:24:03,218 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 236 transitions. [2020-07-08 16:24:03,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-08 16:24:03,218 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 192 states and 236 transitions. [2020-07-08 16:24:03,554 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 236 edges. 236 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:24:03,555 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 236 transitions. [2020-07-08 16:24:03,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-07-08 16:24:03,557 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 16:24:03,558 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 16:24:03,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-08 16:24:03,558 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 16:24:03,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 16:24:03,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1350272370, now seen corresponding path program 1 times [2020-07-08 16:24:03,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 16:24:03,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325039322] [2020-07-08 16:24:03,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 16:24:03,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-08 16:24:03,595 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-08 16:24:03,599 INFO L168 Benchmark]: Toolchain (without parser) took 16566.91 ms. Allocated memory was 144.7 MB in the beginning and 410.5 MB in the end (delta: 265.8 MB). Free memory was 102.6 MB in the beginning and 260.9 MB in the end (delta: -158.3 MB). Peak memory consumption was 107.5 MB. Max. memory is 7.1 GB. [2020-07-08 16:24:03,600 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.7 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-08 16:24:03,601 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.29 ms. Allocated memory is still 144.7 MB. Free memory was 102.6 MB in the beginning and 91.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-07-08 16:24:03,601 INFO L168 Benchmark]: Boogie Preprocessor took 135.20 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 91.1 MB in the beginning and 179.9 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-08 16:24:03,602 INFO L168 Benchmark]: RCFGBuilder took 653.28 ms. Allocated memory is still 202.4 MB. Free memory was 179.9 MB in the beginning and 144.7 MB in the end (delta: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 7.1 GB. [2020-07-08 16:24:03,603 INFO L168 Benchmark]: TraceAbstraction took 15488.48 ms. Allocated memory was 202.4 MB in the beginning and 410.5 MB in the end (delta: 208.1 MB). Free memory was 143.7 MB in the beginning and 260.9 MB in the end (delta: -117.2 MB). Peak memory consumption was 91.0 MB. Max. memory is 7.1 GB. [2020-07-08 16:24:03,606 INFO L336 ainManager$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 0.25 ms. Allocated memory is still 144.7 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.29 ms. Allocated memory is still 144.7 MB. Free memory was 102.6 MB in the beginning and 91.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.20 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 91.1 MB in the beginning and 179.9 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 653.28 ms. Allocated memory is still 202.4 MB. Free memory was 179.9 MB in the beginning and 144.7 MB in the end (delta: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15488.48 ms. Allocated memory was 202.4 MB in the beginning and 410.5 MB in the end (delta: 208.1 MB). Free memory was 143.7 MB in the beginning and 260.9 MB in the end (delta: -117.2 MB). Peak memory consumption was 91.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...