./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/lockfree-3.2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:06:24,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:06:24,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:06:24,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:06:24,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:06:24,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:06:24,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:06:24,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:06:24,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:06:24,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:06:24,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:06:24,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:06:24,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:06:24,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:06:24,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:06:24,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:06:24,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:06:24,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:06:24,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:06:24,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:06:24,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:06:24,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:06:24,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:06:24,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:06:24,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:06:24,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:06:24,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:06:24,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:06:24,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:06:24,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:06:24,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:06:24,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:06:24,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:06:24,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:06:24,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:06:24,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:06:24,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:06:24,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:06:24,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:06:24,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:06:24,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:06:24,504 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:06:24,551 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:06:24,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:06:24,552 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:06:24,553 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:06:24,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:06:24,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:06:24,555 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:06:24,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:06:24,556 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:06:24,556 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:06:24,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:06:24,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:06:24,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:06:24,557 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:06:24,558 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:06:24,558 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:06:24,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:06:24,559 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:06:24,559 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:06:24,559 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:06:24,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:06:24,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:06:24,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:06:24,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:06:24,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:06:24,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:06:24,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:06:24,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:06:24,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:06:24,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 [2021-10-28 09:06:24,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:06:24,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:06:24,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:06:24,895 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:06:24,896 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:06:24,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety/lockfree-3.2.i [2021-10-28 09:06:25,017 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/data/548362851/47aa6eeed4bc4734a1e5b8370fa113a0/FLAG73b7eab6e [2021-10-28 09:06:25,845 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:06:25,846 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/sv-benchmarks/c/memsafety/lockfree-3.2.i [2021-10-28 09:06:25,863 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/data/548362851/47aa6eeed4bc4734a1e5b8370fa113a0/FLAG73b7eab6e [2021-10-28 09:06:26,063 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/data/548362851/47aa6eeed4bc4734a1e5b8370fa113a0 [2021-10-28 09:06:26,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:06:26,069 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:06:26,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:06:26,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:06:26,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:06:26,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:06:26" (1/1) ... [2021-10-28 09:06:26,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d4411b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:26, skipping insertion in model container [2021-10-28 09:06:26,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:06:26" (1/1) ... [2021-10-28 09:06:26,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:06:26,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:06:26,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:06:26,626 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:06:26,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:06:26,745 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:06:26,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:26 WrapperNode [2021-10-28 09:06:26,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:06:26,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:06:26,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:06:26,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:06:26,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:26" (1/1) ... [2021-10-28 09:06:26,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:26" (1/1) ... [2021-10-28 09:06:26,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:26" (1/1) ... [2021-10-28 09:06:26,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:26" (1/1) ... [2021-10-28 09:06:26,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:26" (1/1) ... [2021-10-28 09:06:26,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:26" (1/1) ... [2021-10-28 09:06:26,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:26" (1/1) ... [2021-10-28 09:06:26,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:06:26,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:06:26,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:06:26,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:06:26,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:26" (1/1) ... [2021-10-28 09:06:26,867 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:06:26,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:06:26,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:06:26,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:06:26,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:06:26,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:06:26,952 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 09:06:26,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:06:26,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:06:26,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 09:06:26,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 09:06:26,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 09:06:26,953 INFO L138 BoogieDeclarations]: Found implementation of procedure push [2021-10-28 09:06:26,954 INFO L138 BoogieDeclarations]: Found implementation of procedure pop [2021-10-28 09:06:26,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:06:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:06:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 09:06:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 09:06:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 09:06:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 09:06:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:06:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:06:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:06:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:06:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:06:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:06:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:06:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:06:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:06:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:06:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:06:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:06:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:06:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:06:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:06:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:06:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:06:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:06:26,960 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:06:26,960 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 09:06:26,960 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 09:06:26,960 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 09:06:26,961 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:06:26,961 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:06:26,961 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:06:26,961 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:06:26,962 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:06:26,962 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:06:26,962 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:06:26,962 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:06:26,962 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:06:26,963 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:06:26,963 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:06:26,963 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:06:26,963 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:06:26,964 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:06:26,964 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:06:26,964 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:06:26,964 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:06:26,965 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:06:26,965 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:06:26,965 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:06:26,965 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:06:26,966 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:06:26,966 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:06:26,966 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:06:26,966 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:06:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:06:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:06:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:06:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:06:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:06:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:06:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:06:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:06:26,969 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:06:26,969 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:06:26,969 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:06:26,969 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:06:26,970 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:06:26,970 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:06:26,970 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:06:26,970 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:06:26,970 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:06:26,971 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:06:26,971 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:06:26,971 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:06:26,971 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:06:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:06:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:06:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:06:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:06:26,973 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:06:26,973 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:06:26,973 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:06:26,973 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:06:26,974 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:06:26,974 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:06:26,974 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:06:26,974 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:06:26,974 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:06:26,975 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:06:26,975 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:06:26,975 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:06:26,975 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:06:26,976 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:06:26,976 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:06:26,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:06:26,976 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:06:26,976 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:06:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:06:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:06:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:06:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:06:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:06:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:06:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:06:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:06:26,979 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:06:26,979 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:06:26,979 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:06:26,979 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:06:26,980 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:06:26,980 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:06:26,980 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:06:26,980 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:06:26,980 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:06:26,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 09:06:26,981 INFO L130 BoogieDeclarations]: Found specification of procedure push [2021-10-28 09:06:26,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:06:26,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:06:26,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:06:26,982 INFO L130 BoogieDeclarations]: Found specification of procedure pop [2021-10-28 09:06:26,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:06:26,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:06:26,983 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:06:26,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:06:26,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:06:26,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:06:26,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:06:27,875 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:06:27,876 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-28 09:06:27,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:06:27 BoogieIcfgContainer [2021-10-28 09:06:27,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:06:27,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:06:27,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:06:27,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:06:27,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:06:26" (1/3) ... [2021-10-28 09:06:27,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddd059d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:06:27, skipping insertion in model container [2021-10-28 09:06:27,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:26" (2/3) ... [2021-10-28 09:06:27,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddd059d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:06:27, skipping insertion in model container [2021-10-28 09:06:27,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:06:27" (3/3) ... [2021-10-28 09:06:27,891 INFO L111 eAbstractionObserver]: Analyzing ICFG lockfree-3.2.i [2021-10-28 09:06:27,898 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:06:27,898 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-10-28 09:06:27,950 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:06:27,959 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:06:27,959 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-28 09:06:27,996 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 67 states have internal predecessors, (85), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 09:06:28,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:06:28,008 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:28,009 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:28,010 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 09:06:28,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:28,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1846299228, now seen corresponding path program 1 times [2021-10-28 09:06:28,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:28,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326404459] [2021-10-28 09:06:28,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:28,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:28,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:06:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:28,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:28,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:28,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326404459] [2021-10-28 09:06:28,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326404459] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:28,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:28,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:06:28,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946322721] [2021-10-28 09:06:28,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:06:28,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:28,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:06:28,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:06:28,408 INFO L87 Difference]: Start difference. First operand has 74 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 67 states have internal predecessors, (85), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:28,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:28,769 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2021-10-28 09:06:28,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:06:28,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-10-28 09:06:28,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:28,789 INFO L225 Difference]: With dead ends: 92 [2021-10-28 09:06:28,789 INFO L226 Difference]: Without dead ends: 89 [2021-10-28 09:06:28,792 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:06:28,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-28 09:06:28,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 71. [2021-10-28 09:06:28,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 44 states have (on average 1.8409090909090908) internal successors, (81), 65 states have internal predecessors, (81), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:06:28,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2021-10-28 09:06:28,856 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 8 [2021-10-28 09:06:28,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:28,857 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2021-10-28 09:06:28,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:28,857 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2021-10-28 09:06:28,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:06:28,859 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:28,859 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:28,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:06:28,860 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 09:06:28,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:28,862 INFO L85 PathProgramCache]: Analyzing trace with hash 451849005, now seen corresponding path program 1 times [2021-10-28 09:06:28,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:28,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484035259] [2021-10-28 09:06:28,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:28,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:29,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:06:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:29,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:29,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:29,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484035259] [2021-10-28 09:06:29,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484035259] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:29,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:29,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:06:29,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151394300] [2021-10-28 09:06:29,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:06:29,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:29,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:06:29,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:06:29,063 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:29,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:29,454 INFO L93 Difference]: Finished difference Result 91 states and 114 transitions. [2021-10-28 09:06:29,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:06:29,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 09:06:29,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:29,457 INFO L225 Difference]: With dead ends: 91 [2021-10-28 09:06:29,457 INFO L226 Difference]: Without dead ends: 91 [2021-10-28 09:06:29,458 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:06:29,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-28 09:06:29,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 72. [2021-10-28 09:06:29,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 45 states have (on average 1.8222222222222222) internal successors, (82), 66 states have internal predecessors, (82), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:06:29,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2021-10-28 09:06:29,472 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 10 [2021-10-28 09:06:29,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:29,472 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2021-10-28 09:06:29,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:29,473 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2021-10-28 09:06:29,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:06:29,474 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:29,475 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:29,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:06:29,475 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 09:06:29,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:29,476 INFO L85 PathProgramCache]: Analyzing trace with hash 451908587, now seen corresponding path program 1 times [2021-10-28 09:06:29,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:29,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904099668] [2021-10-28 09:06:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:29,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:29,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:06:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:29,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:29,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:29,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904099668] [2021-10-28 09:06:29,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904099668] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:29,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:29,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:06:29,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702545951] [2021-10-28 09:06:29,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:06:29,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:29,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:06:29,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:06:29,701 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:30,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:30,160 INFO L93 Difference]: Finished difference Result 135 states and 176 transitions. [2021-10-28 09:06:30,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:06:30,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 09:06:30,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:30,169 INFO L225 Difference]: With dead ends: 135 [2021-10-28 09:06:30,171 INFO L226 Difference]: Without dead ends: 135 [2021-10-28 09:06:30,171 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:06:30,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-28 09:06:30,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 108. [2021-10-28 09:06:30,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 77 states have (on average 1.8311688311688312) internal successors, (141), 99 states have internal predecessors, (141), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 09:06:30,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 153 transitions. [2021-10-28 09:06:30,198 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 153 transitions. Word has length 10 [2021-10-28 09:06:30,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:30,199 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 153 transitions. [2021-10-28 09:06:30,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:30,200 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 153 transitions. [2021-10-28 09:06:30,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:06:30,201 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:30,201 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:30,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:06:30,202 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5ENSURES_VIOLATIONMEMORY_LEAK === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 09:06:30,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:30,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1124262917, now seen corresponding path program 1 times [2021-10-28 09:06:30,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:30,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961990387] [2021-10-28 09:06:30,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:30,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:30,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:06:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:30,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:30,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:30,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961990387] [2021-10-28 09:06:30,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961990387] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:30,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:30,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:06:30,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220610188] [2021-10-28 09:06:30,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:06:30,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:30,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:06:30,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:06:30,403 INFO L87 Difference]: Start difference. First operand 108 states and 153 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:30,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:30,688 INFO L93 Difference]: Finished difference Result 149 states and 214 transitions. [2021-10-28 09:06:30,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:06:30,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 09:06:30,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:30,693 INFO L225 Difference]: With dead ends: 149 [2021-10-28 09:06:30,693 INFO L226 Difference]: Without dead ends: 144 [2021-10-28 09:06:30,694 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:06:30,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-28 09:06:30,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 126. [2021-10-28 09:06:30,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 89 states have (on average 1.7752808988764044) internal successors, (158), 115 states have internal predecessors, (158), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (15), 5 states have call predecessors, (15), 9 states have call successors, (15) [2021-10-28 09:06:30,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 183 transitions. [2021-10-28 09:06:30,723 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 183 transitions. Word has length 11 [2021-10-28 09:06:30,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:30,724 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 183 transitions. [2021-10-28 09:06:30,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:30,724 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 183 transitions. [2021-10-28 09:06:30,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:06:30,725 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:30,726 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:30,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:06:30,726 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting pushErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 09:06:30,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:30,727 INFO L85 PathProgramCache]: Analyzing trace with hash 649350680, now seen corresponding path program 1 times [2021-10-28 09:06:30,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:30,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153370153] [2021-10-28 09:06:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:30,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:30,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:06:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:30,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:30,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153370153] [2021-10-28 09:06:30,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153370153] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:30,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:30,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:06:30,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014404111] [2021-10-28 09:06:30,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:06:30,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:30,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:06:30,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:06:30,918 INFO L87 Difference]: Start difference. First operand 126 states and 183 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:31,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:31,390 INFO L93 Difference]: Finished difference Result 174 states and 254 transitions. [2021-10-28 09:06:31,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:06:31,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-28 09:06:31,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:31,396 INFO L225 Difference]: With dead ends: 174 [2021-10-28 09:06:31,396 INFO L226 Difference]: Without dead ends: 174 [2021-10-28 09:06:31,396 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:06:31,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-28 09:06:31,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 153. [2021-10-28 09:06:31,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 112 states have (on average 1.7767857142857142) internal successors, (199), 139 states have internal predecessors, (199), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (21), 7 states have call predecessors, (21), 11 states have call successors, (21) [2021-10-28 09:06:31,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 232 transitions. [2021-10-28 09:06:31,426 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 232 transitions. Word has length 13 [2021-10-28 09:06:31,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:31,427 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 232 transitions. [2021-10-28 09:06:31,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:31,427 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 232 transitions. [2021-10-28 09:06:31,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:06:31,429 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:31,429 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:31,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:06:31,430 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting pushErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 09:06:31,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:31,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1870609254, now seen corresponding path program 1 times [2021-10-28 09:06:31,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:31,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087328138] [2021-10-28 09:06:31,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:31,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:31,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:06:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:31,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:31,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:31,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087328138] [2021-10-28 09:06:31,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087328138] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:31,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:31,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:06:31,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158774011] [2021-10-28 09:06:31,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:06:31,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:31,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:06:31,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:06:31,611 INFO L87 Difference]: Start difference. First operand 153 states and 232 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:32,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:32,045 INFO L93 Difference]: Finished difference Result 265 states and 403 transitions. [2021-10-28 09:06:32,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:06:32,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-28 09:06:32,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:32,051 INFO L225 Difference]: With dead ends: 265 [2021-10-28 09:06:32,051 INFO L226 Difference]: Without dead ends: 265 [2021-10-28 09:06:32,052 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:06:32,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-10-28 09:06:32,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 238. [2021-10-28 09:06:32,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 189 states have (on average 1.7195767195767195) internal successors, (325), 216 states have internal predecessors, (325), 17 states have call successors, (17), 12 states have call predecessors, (17), 14 states have return successors, (34), 10 states have call predecessors, (34), 16 states have call successors, (34) [2021-10-28 09:06:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 376 transitions. [2021-10-28 09:06:32,094 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 376 transitions. Word has length 13 [2021-10-28 09:06:32,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:32,095 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 376 transitions. [2021-10-28 09:06:32,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:32,096 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 376 transitions. [2021-10-28 09:06:32,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:06:32,097 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:32,098 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:32,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:06:32,098 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting pushErr1REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 09:06:32,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:32,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1870609253, now seen corresponding path program 1 times [2021-10-28 09:06:32,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:32,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947147482] [2021-10-28 09:06:32,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:32,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:32,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:06:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:32,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:32,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:32,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947147482] [2021-10-28 09:06:32,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947147482] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:32,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:32,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:06:32,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848304970] [2021-10-28 09:06:32,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:06:32,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:32,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:06:32,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:06:32,269 INFO L87 Difference]: Start difference. First operand 238 states and 376 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:32,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:32,785 INFO L93 Difference]: Finished difference Result 329 states and 503 transitions. [2021-10-28 09:06:32,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:06:32,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-28 09:06:32,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:32,793 INFO L225 Difference]: With dead ends: 329 [2021-10-28 09:06:32,794 INFO L226 Difference]: Without dead ends: 329 [2021-10-28 09:06:32,795 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:06:32,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-10-28 09:06:32,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 305. [2021-10-28 09:06:32,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 253 states have (on average 1.683794466403162) internal successors, (426), 278 states have internal predecessors, (426), 17 states have call successors, (17), 17 states have call predecessors, (17), 19 states have return successors, (34), 10 states have call predecessors, (34), 16 states have call successors, (34) [2021-10-28 09:06:32,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 477 transitions. [2021-10-28 09:06:32,828 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 477 transitions. Word has length 13 [2021-10-28 09:06:32,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:32,829 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 477 transitions. [2021-10-28 09:06:32,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:32,829 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 477 transitions. [2021-10-28 09:06:32,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 09:06:32,831 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:32,831 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:32,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:06:32,832 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting pushErr4REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 09:06:32,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:32,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2140662271, now seen corresponding path program 1 times [2021-10-28 09:06:32,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:32,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965789308] [2021-10-28 09:06:32,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:32,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:32,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:06:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:33,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:33,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965789308] [2021-10-28 09:06:33,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965789308] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:33,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:33,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:06:33,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700984206] [2021-10-28 09:06:33,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:06:33,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:33,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:06:33,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:06:33,013 INFO L87 Difference]: Start difference. First operand 305 states and 477 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:33,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:33,337 INFO L93 Difference]: Finished difference Result 270 states and 379 transitions. [2021-10-28 09:06:33,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:06:33,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-10-28 09:06:33,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:33,341 INFO L225 Difference]: With dead ends: 270 [2021-10-28 09:06:33,341 INFO L226 Difference]: Without dead ends: 270 [2021-10-28 09:06:33,342 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:06:33,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-10-28 09:06:33,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 235. [2021-10-28 09:06:33,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 192 states have (on average 1.5989583333333333) internal successors, (307), 211 states have internal predecessors, (307), 14 states have call successors, (14), 14 states have call predecessors, (14), 17 states have return successors, (24), 9 states have call predecessors, (24), 13 states have call successors, (24) [2021-10-28 09:06:33,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 345 transitions. [2021-10-28 09:06:33,356 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 345 transitions. Word has length 14 [2021-10-28 09:06:33,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:33,357 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 345 transitions. [2021-10-28 09:06:33,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:33,357 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 345 transitions. [2021-10-28 09:06:33,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 09:06:33,358 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:33,358 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:33,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:06:33,359 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting popErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 09:06:33,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:33,360 INFO L85 PathProgramCache]: Analyzing trace with hash 406451957, now seen corresponding path program 1 times [2021-10-28 09:06:33,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:33,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571626197] [2021-10-28 09:06:33,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:33,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:33,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:06:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:33,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:33,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:06:33,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571626197] [2021-10-28 09:06:33,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571626197] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:33,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:33,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:06:33,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253996002] [2021-10-28 09:06:33,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:06:33,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:06:33,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:06:33,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:06:33,516 INFO L87 Difference]: Start difference. First operand 235 states and 345 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:33,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:33,890 INFO L93 Difference]: Finished difference Result 402 states and 560 transitions. [2021-10-28 09:06:33,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:06:33,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-10-28 09:06:33,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:33,895 INFO L225 Difference]: With dead ends: 402 [2021-10-28 09:06:33,895 INFO L226 Difference]: Without dead ends: 402 [2021-10-28 09:06:33,896 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:06:33,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-10-28 09:06:33,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 376. [2021-10-28 09:06:33,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 305 states have (on average 1.498360655737705) internal successors, (457), 336 states have internal predecessors, (457), 24 states have call successors, (24), 24 states have call predecessors, (24), 35 states have return successors, (50), 15 states have call predecessors, (50), 23 states have call successors, (50) [2021-10-28 09:06:33,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 531 transitions. [2021-10-28 09:06:33,932 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 531 transitions. Word has length 15 [2021-10-28 09:06:33,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:33,933 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 531 transitions. [2021-10-28 09:06:33,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:33,934 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 531 transitions. [2021-10-28 09:06:33,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 09:06:33,941 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:33,941 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:33,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 09:06:33,942 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr5ENSURES_VIOLATIONMEMORY_LEAK === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 09:06:33,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:33,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1475656894, now seen corresponding path program 1 times [2021-10-28 09:06:33,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:06:33,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162532489] [2021-10-28 09:06:33,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:33,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:06:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:06:33,986 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:06:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:06:34,069 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:06:34,069 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:06:34,070 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr5ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:06:34,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr0REQUIRES_VIOLATION [2021-10-28 09:06:34,073 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr1REQUIRES_VIOLATION [2021-10-28 09:06:34,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr2REQUIRES_VIOLATION [2021-10-28 09:06:34,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr3REQUIRES_VIOLATION [2021-10-28 09:06:34,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr4REQUIRES_VIOLATION [2021-10-28 09:06:34,074 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr5REQUIRES_VIOLATION [2021-10-28 09:06:34,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr6REQUIRES_VIOLATION [2021-10-28 09:06:34,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr7REQUIRES_VIOLATION [2021-10-28 09:06:34,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr0REQUIRES_VIOLATION [2021-10-28 09:06:34,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr1REQUIRES_VIOLATION [2021-10-28 09:06:34,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr2REQUIRES_VIOLATION [2021-10-28 09:06:34,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr3REQUIRES_VIOLATION [2021-10-28 09:06:34,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr4REQUIRES_VIOLATION [2021-10-28 09:06:34,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr5REQUIRES_VIOLATION [2021-10-28 09:06:34,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 09:06:34,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 09:06:34,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:06:34,080 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:06:34,080 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:06:34,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:06:34,085 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:34,089 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:06:34,132 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 09:06:34,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:06:34 BoogieIcfgContainer [2021-10-28 09:06:34,183 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:06:34,183 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:06:34,184 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:06:34,184 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:06:34,184 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:06:27" (3/4) ... [2021-10-28 09:06:34,189 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:06:34,189 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:06:34,191 INFO L168 Benchmark]: Toolchain (without parser) took 8121.16 ms. Allocated memory was 98.6 MB in the beginning and 178.3 MB in the end (delta: 79.7 MB). Free memory was 63.9 MB in the beginning and 128.3 MB in the end (delta: -64.4 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:34,192 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 98.6 MB. Free memory is still 54.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:06:34,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.60 ms. Allocated memory was 98.6 MB in the beginning and 140.5 MB in the end (delta: 41.9 MB). Free memory was 63.6 MB in the beginning and 107.0 MB in the end (delta: -43.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:34,193 INFO L168 Benchmark]: Boogie Preprocessor took 95.85 ms. Allocated memory is still 140.5 MB. Free memory was 107.0 MB in the beginning and 104.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:34,193 INFO L168 Benchmark]: RCFGBuilder took 1035.06 ms. Allocated memory is still 140.5 MB. Free memory was 104.4 MB in the beginning and 80.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:34,194 INFO L168 Benchmark]: TraceAbstraction took 6301.35 ms. Allocated memory was 140.5 MB in the beginning and 178.3 MB in the end (delta: 37.7 MB). Free memory was 79.9 MB in the beginning and 128.3 MB in the end (delta: -48.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:06:34,194 INFO L168 Benchmark]: Witness Printer took 5.82 ms. Allocated memory is still 178.3 MB. Free memory is still 128.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:06:34,197 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 98.6 MB. Free memory is still 54.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 675.60 ms. Allocated memory was 98.6 MB in the beginning and 140.5 MB in the end (delta: 41.9 MB). Free memory was 63.6 MB in the beginning and 107.0 MB in the end (delta: -43.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 95.85 ms. Allocated memory is still 140.5 MB. Free memory was 107.0 MB in the beginning and 104.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1035.06 ms. Allocated memory is still 140.5 MB. Free memory was 104.4 MB in the beginning and 80.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6301.35 ms. Allocated memory was 140.5 MB in the beginning and 178.3 MB in the end (delta: 37.7 MB). Free memory was 79.9 MB in the beginning and 128.3 MB in the end (delta: -48.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.82 ms. Allocated memory is still 178.3 MB. Free memory is still 128.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 592. Possible FailurePath: [L528] struct cell *S; [L529] int pc1 = 1; [L530] int pc4 = 1; [L531] static struct cell *t1 = ((void *)0); [L532] static struct cell *x1 = ((void *)0); [L561] struct cell* garbage; [L562] static struct cell *t4 = ((void *)0); [L563] static struct cell *x4 = ((void *)0); [L566] static int res4; VAL [\old(garbage)=60, \old(garbage)=49, \old(pc1)=55, \old(pc4)=52, \old(res4)=68, \old(S)=64, \old(S)=61, \old(t1)=71, \old(t1)=58, \old(t4)=65, \old(t4)=59, \old(x1)=69, \old(x1)=67, \old(x4)=54, \old(x4)=57, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] S || 1 != pc4 || __VERIFIER_nondet_int() [L594] S || 1 != pc4 || __VERIFIER_nondet_int() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, __VERIFIER_nondet_int()=1, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, S || 1 != pc4 || __VERIFIER_nondet_int()=1, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc4 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L535] pc1++ [L536] case 1: [L537] x1 = malloc(sizeof(*x1)) [L538] x1->data = 0 VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L539] x1->next = ((void *)0) VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L596] RET push() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L594] S || 1 != pc4 || __VERIFIER_nondet_int() [L594] S || 1 != pc4 || __VERIFIER_nondet_int() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, __VERIFIER_nondet_int()=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, S || 1 != pc4 || __VERIFIER_nondet_int()=0, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L594] COND FALSE !(S || 1 != pc4 || __VERIFIER_nondet_int()) [L600] COND FALSE !(\read(*garbage)) VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L605] S = ((void *)0) [L606] t1 = ((void *)0) [L607] x1 = ((void *)0) [L608] t4 = ((void *)0) [L609] x4 = ((void *)0) [L610] return !!garbage; VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, \result=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 92 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 6.1s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 813 SDtfs, 508 SDslu, 788 SDs, 0 SdLazy, 1208 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=376occurred in iteration=9, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 215 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 863 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 09:06:34,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:06:37,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:06:37,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:06:37,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:06:37,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:06:37,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:06:37,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:06:37,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:06:37,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:06:37,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:06:37,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:06:37,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:06:37,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:06:37,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:06:37,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:06:37,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:06:37,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:06:37,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:06:37,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:06:37,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:06:37,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:06:37,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:06:37,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:06:37,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:06:37,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:06:37,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:06:37,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:06:37,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:06:37,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:06:37,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:06:37,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:06:37,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:06:37,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:06:37,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:06:37,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:06:37,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:06:37,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:06:37,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:06:37,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:06:37,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:06:37,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:06:37,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 09:06:37,712 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:06:37,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:06:37,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:06:37,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:06:37,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:06:37,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:06:37,717 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:06:37,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:06:37,718 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:06:37,718 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:06:37,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:06:37,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:06:37,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:06:37,720 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:06:37,721 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:06:37,721 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:06:37,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:06:37,722 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:06:37,722 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:06:37,722 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:06:37,723 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:06:37,723 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:06:37,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:06:37,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:06:37,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:06:37,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:06:37,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:06:37,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:06:37,725 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:06:37,726 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:06:37,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:06:37,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:06:37,727 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 [2021-10-28 09:06:38,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:06:38,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:06:38,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:06:38,372 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:06:38,373 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:06:38,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety/lockfree-3.2.i [2021-10-28 09:06:38,467 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/data/fb815b7bd/563db758029f4a7080a1c3372f4aed4b/FLAG14b36b578 [2021-10-28 09:06:39,266 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:06:39,266 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/sv-benchmarks/c/memsafety/lockfree-3.2.i [2021-10-28 09:06:39,291 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/data/fb815b7bd/563db758029f4a7080a1c3372f4aed4b/FLAG14b36b578 [2021-10-28 09:06:39,453 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/data/fb815b7bd/563db758029f4a7080a1c3372f4aed4b [2021-10-28 09:06:39,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:06:39,459 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:06:39,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:06:39,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:06:39,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:06:39,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:06:39" (1/1) ... [2021-10-28 09:06:39,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0cefb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:39, skipping insertion in model container [2021-10-28 09:06:39,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:06:39" (1/1) ... [2021-10-28 09:06:39,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:06:39,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:06:39,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:06:39,881 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:06:39,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:06:40,038 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:06:40,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:40 WrapperNode [2021-10-28 09:06:40,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:06:40,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:06:40,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:06:40,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:06:40,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:40" (1/1) ... [2021-10-28 09:06:40,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:40" (1/1) ... [2021-10-28 09:06:40,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:40" (1/1) ... [2021-10-28 09:06:40,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:40" (1/1) ... [2021-10-28 09:06:40,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:40" (1/1) ... [2021-10-28 09:06:40,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:40" (1/1) ... [2021-10-28 09:06:40,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:40" (1/1) ... [2021-10-28 09:06:40,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:06:40,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:06:40,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:06:40,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:06:40,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:40" (1/1) ... [2021-10-28 09:06:40,140 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:06:40,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:06:40,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:06:40,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:06:40,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:06:40,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:06:40,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:06:40,229 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 09:06:40,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:06:40,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:06:40,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 09:06:40,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 09:06:40,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 09:06:40,232 INFO L138 BoogieDeclarations]: Found implementation of procedure push [2021-10-28 09:06:40,232 INFO L138 BoogieDeclarations]: Found implementation of procedure pop [2021-10-28 09:06:40,232 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:06:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:06:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 09:06:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 09:06:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 09:06:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 09:06:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:06:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:06:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:06:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:06:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:06:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:06:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:06:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:06:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:06:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:06:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:06:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:06:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:06:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:06:40,236 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:06:40,236 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:06:40,236 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:06:40,236 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:06:40,236 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:06:40,236 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 09:06:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 09:06:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 09:06:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:06:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:06:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:06:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:06:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:06:40,238 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:06:40,238 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:06:40,238 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:06:40,239 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:06:40,240 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:06:40,240 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:06:40,240 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:06:40,240 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:06:40,240 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:06:40,241 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:06:40,241 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:06:40,241 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:06:40,241 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:06:40,241 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:06:40,241 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:06:40,242 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:06:40,242 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:06:40,243 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:06:40,243 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:06:40,244 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:06:40,244 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:06:40,246 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:06:40,246 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:06:40,247 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:06:40,247 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:06:40,247 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:06:40,247 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:06:40,247 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:06:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:06:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:06:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:06:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:06:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:06:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:06:40,248 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:06:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:06:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:06:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:06:40,250 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:06:40,250 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:06:40,250 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:06:40,250 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:06:40,251 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:06:40,251 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:06:40,251 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:06:40,251 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:06:40,251 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:06:40,251 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:06:40,252 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:06:40,252 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:06:40,252 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:06:40,252 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:06:40,252 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:06:40,252 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:06:40,252 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:06:40,253 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:06:40,253 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:06:40,253 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:06:40,253 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:06:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:06:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:06:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:06:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:06:40,255 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:06:40,255 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:06:40,256 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:06:40,256 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:06:40,256 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:06:40,256 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:06:40,256 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:06:40,256 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:06:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:06:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:06:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:06:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:06:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:06:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:06:40,258 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:06:40,258 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:06:40,258 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:06:40,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 09:06:40,259 INFO L130 BoogieDeclarations]: Found specification of procedure push [2021-10-28 09:06:40,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:06:40,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 09:06:40,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:06:40,264 INFO L130 BoogieDeclarations]: Found specification of procedure pop [2021-10-28 09:06:40,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:06:40,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 09:06:40,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:06:40,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:06:40,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:06:40,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:06:40,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:06:40,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:06:40,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 09:06:40,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 09:06:41,271 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:06:41,271 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-28 09:06:41,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:06:41 BoogieIcfgContainer [2021-10-28 09:06:41,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:06:41,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:06:41,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:06:41,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:06:41,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:06:39" (1/3) ... [2021-10-28 09:06:41,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc70eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:06:41, skipping insertion in model container [2021-10-28 09:06:41,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:40" (2/3) ... [2021-10-28 09:06:41,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc70eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:06:41, skipping insertion in model container [2021-10-28 09:06:41,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:06:41" (3/3) ... [2021-10-28 09:06:41,285 INFO L111 eAbstractionObserver]: Analyzing ICFG lockfree-3.2.i [2021-10-28 09:06:41,291 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:06:41,292 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-10-28 09:06:41,363 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:06:41,375 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:06:41,375 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-28 09:06:41,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 65 states have internal predecessors, (82), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 09:06:41,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:06:41,425 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:41,426 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:41,427 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 09:06:41,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:41,433 INFO L85 PathProgramCache]: Analyzing trace with hash 913050877, now seen corresponding path program 1 times [2021-10-28 09:06:41,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:06:41,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23487165] [2021-10-28 09:06:41,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:41,447 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:06:41,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:06:41,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:06:41,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:06:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:41,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 09:06:41,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:06:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:41,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:06:41,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:41,820 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:06:41,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23487165] [2021-10-28 09:06:41,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23487165] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:41,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:41,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:06:41,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573861582] [2021-10-28 09:06:41,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:06:41,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:06:41,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:06:41,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:06:41,853 INFO L87 Difference]: Start difference. First operand has 72 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 65 states have internal predecessors, (82), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:41,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:41,885 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2021-10-28 09:06:41,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:06:41,886 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-10-28 09:06:41,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:41,900 INFO L225 Difference]: With dead ends: 72 [2021-10-28 09:06:41,900 INFO L226 Difference]: Without dead ends: 69 [2021-10-28 09:06:41,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:06:41,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-28 09:06:41,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-10-28 09:06:41,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 63 states have internal predecessors, (78), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:06:41,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2021-10-28 09:06:41,955 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 8 [2021-10-28 09:06:41,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:41,956 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2021-10-28 09:06:41,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:41,957 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2021-10-28 09:06:41,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:06:41,958 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:41,958 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:41,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:06:42,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:06:42,173 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 09:06:42,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:42,174 INFO L85 PathProgramCache]: Analyzing trace with hash 913039345, now seen corresponding path program 1 times [2021-10-28 09:06:42,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:06:42,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046523936] [2021-10-28 09:06:42,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:42,176 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:06:42,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:06:42,178 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:06:42,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:06:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:42,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:06:42,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:06:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:42,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:06:42,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:42,588 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:06:42,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046523936] [2021-10-28 09:06:42,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046523936] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:42,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:42,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 09:06:42,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672703075] [2021-10-28 09:06:42,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:06:42,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:06:42,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:06:42,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:06:42,592 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:42,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:42,665 INFO L93 Difference]: Finished difference Result 120 states and 153 transitions. [2021-10-28 09:06:42,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:06:42,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-10-28 09:06:42,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:42,678 INFO L225 Difference]: With dead ends: 120 [2021-10-28 09:06:42,678 INFO L226 Difference]: Without dead ends: 120 [2021-10-28 09:06:42,679 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:06:42,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-28 09:06:42,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 102. [2021-10-28 09:06:42,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 71 states have (on average 1.8732394366197183) internal successors, (133), 93 states have internal predecessors, (133), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 09:06:42,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 145 transitions. [2021-10-28 09:06:42,722 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 145 transitions. Word has length 8 [2021-10-28 09:06:42,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:42,722 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 145 transitions. [2021-10-28 09:06:42,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:42,723 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 145 transitions. [2021-10-28 09:06:42,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:06:42,723 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:42,723 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:42,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:06:42,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:06:42,924 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr5ENSURES_VIOLATIONMEMORY_LEAK === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 09:06:42,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:42,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1760552785, now seen corresponding path program 1 times [2021-10-28 09:06:42,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:06:42,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83981693] [2021-10-28 09:06:42,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:42,927 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:06:42,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:06:42,934 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:06:42,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:06:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:43,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:06:43,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:06:43,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:43,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:06:43,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:43,274 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:06:43,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83981693] [2021-10-28 09:06:43,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83981693] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:43,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:43,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:06:43,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282681703] [2021-10-28 09:06:43,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:06:43,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:06:43,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:06:43,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:06:43,287 INFO L87 Difference]: Start difference. First operand 102 states and 145 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:43,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:43,476 INFO L93 Difference]: Finished difference Result 128 states and 182 transitions. [2021-10-28 09:06:43,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:06:43,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 09:06:43,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:43,480 INFO L225 Difference]: With dead ends: 128 [2021-10-28 09:06:43,480 INFO L226 Difference]: Without dead ends: 125 [2021-10-28 09:06:43,480 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:06:43,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-28 09:06:43,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 115. [2021-10-28 09:06:43,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 78 states have (on average 1.8333333333333333) internal successors, (143), 104 states have internal predecessors, (143), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (15), 5 states have call predecessors, (15), 9 states have call successors, (15) [2021-10-28 09:06:43,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2021-10-28 09:06:43,511 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 9 [2021-10-28 09:06:43,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:43,511 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2021-10-28 09:06:43,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:43,512 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2021-10-28 09:06:43,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:06:43,513 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:43,513 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:43,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:06:43,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:06:43,727 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting pushErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 09:06:43,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:43,728 INFO L85 PathProgramCache]: Analyzing trace with hash 370381771, now seen corresponding path program 1 times [2021-10-28 09:06:43,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:06:43,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527654040] [2021-10-28 09:06:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:43,729 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:06:43,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:06:43,730 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:06:43,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:06:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:43,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:06:43,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:06:43,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:06:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:43,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:06:44,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:44,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:06:44,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527654040] [2021-10-28 09:06:44,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527654040] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:44,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:44,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:06:44,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129726843] [2021-10-28 09:06:44,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:06:44,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:06:44,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:06:44,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:06:44,028 INFO L87 Difference]: Start difference. First operand 115 states and 168 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:44,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:44,201 INFO L93 Difference]: Finished difference Result 198 states and 290 transitions. [2021-10-28 09:06:44,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:06:44,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 09:06:44,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:44,213 INFO L225 Difference]: With dead ends: 198 [2021-10-28 09:06:44,213 INFO L226 Difference]: Without dead ends: 198 [2021-10-28 09:06:44,213 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:06:44,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-28 09:06:44,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 177. [2021-10-28 09:06:44,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 134 states have (on average 1.7761194029850746) internal successors, (238), 160 states have internal predecessors, (238), 14 states have call successors, (14), 10 states have call predecessors, (14), 11 states have return successors, (24), 7 states have call predecessors, (24), 13 states have call successors, (24) [2021-10-28 09:06:44,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 276 transitions. [2021-10-28 09:06:44,245 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 276 transitions. Word has length 11 [2021-10-28 09:06:44,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:44,245 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 276 transitions. [2021-10-28 09:06:44,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:44,246 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 276 transitions. [2021-10-28 09:06:44,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:06:44,246 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:44,246 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:44,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:06:44,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:06:44,447 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting pushErr1REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 09:06:44,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:44,448 INFO L85 PathProgramCache]: Analyzing trace with hash 370381772, now seen corresponding path program 1 times [2021-10-28 09:06:44,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:06:44,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486178439] [2021-10-28 09:06:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:44,449 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:06:44,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:06:44,450 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:06:44,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:06:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:44,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:06:44,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:06:44,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:06:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:44,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:06:44,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:44,828 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:06:44,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486178439] [2021-10-28 09:06:44,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486178439] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:44,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:44,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-28 09:06:44,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414986615] [2021-10-28 09:06:44,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:06:44,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:06:44,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:06:44,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:06:44,831 INFO L87 Difference]: Start difference. First operand 177 states and 276 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:45,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:45,214 INFO L93 Difference]: Finished difference Result 333 states and 499 transitions. [2021-10-28 09:06:45,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:06:45,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 09:06:45,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:45,220 INFO L225 Difference]: With dead ends: 333 [2021-10-28 09:06:45,220 INFO L226 Difference]: Without dead ends: 333 [2021-10-28 09:06:45,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:06:45,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-10-28 09:06:45,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 295. [2021-10-28 09:06:45,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 242 states have (on average 1.7314049586776858) internal successors, (419), 268 states have internal predecessors, (419), 18 states have call successors, (18), 18 states have call predecessors, (18), 19 states have return successors, (35), 9 states have call predecessors, (35), 17 states have call successors, (35) [2021-10-28 09:06:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 472 transitions. [2021-10-28 09:06:45,261 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 472 transitions. Word has length 11 [2021-10-28 09:06:45,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:45,261 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 472 transitions. [2021-10-28 09:06:45,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:45,262 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 472 transitions. [2021-10-28 09:06:45,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:06:45,263 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:45,263 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:45,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:06:45,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:06:45,470 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting pushErr4REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 09:06:45,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:45,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1403059964, now seen corresponding path program 1 times [2021-10-28 09:06:45,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:06:45,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799712338] [2021-10-28 09:06:45,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:45,472 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:06:45,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:06:45,475 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:06:45,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 09:06:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:45,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:06:45,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:06:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:45,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:06:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:45,854 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:06:45,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799712338] [2021-10-28 09:06:45,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799712338] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:45,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:45,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 09:06:45,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361473877] [2021-10-28 09:06:45,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:06:45,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:06:45,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:06:45,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:06:45,865 INFO L87 Difference]: Start difference. First operand 295 states and 472 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:45,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:45,912 INFO L93 Difference]: Finished difference Result 212 states and 298 transitions. [2021-10-28 09:06:45,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:06:45,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-28 09:06:45,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:45,917 INFO L225 Difference]: With dead ends: 212 [2021-10-28 09:06:45,917 INFO L226 Difference]: Without dead ends: 212 [2021-10-28 09:06:45,918 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:06:45,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-28 09:06:45,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 181. [2021-10-28 09:06:45,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 144 states have (on average 1.6736111111111112) internal successors, (241), 162 states have internal predecessors, (241), 12 states have call successors, (12), 12 states have call predecessors, (12), 13 states have return successors, (18), 7 states have call predecessors, (18), 11 states have call successors, (18) [2021-10-28 09:06:45,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 271 transitions. [2021-10-28 09:06:45,940 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 271 transitions. Word has length 12 [2021-10-28 09:06:45,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:45,941 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 271 transitions. [2021-10-28 09:06:45,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:45,941 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 271 transitions. [2021-10-28 09:06:45,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:06:45,942 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:45,942 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:45,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:06:46,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:06:46,144 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting popErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 09:06:46,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:46,144 INFO L85 PathProgramCache]: Analyzing trace with hash -2074754906, now seen corresponding path program 1 times [2021-10-28 09:06:46,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:06:46,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848528236] [2021-10-28 09:06:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:46,145 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:06:46,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:06:46,147 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:06:46,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 09:06:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:46,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:06:46,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:06:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:46,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:06:46,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:46,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:06:46,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848528236] [2021-10-28 09:06:46,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848528236] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:46,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:46,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 09:06:46,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124613620] [2021-10-28 09:06:46,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:06:46,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:06:46,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:06:46,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:06:46,462 INFO L87 Difference]: Start difference. First operand 181 states and 271 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:46,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:46,508 INFO L93 Difference]: Finished difference Result 281 states and 404 transitions. [2021-10-28 09:06:46,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:06:46,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-28 09:06:46,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:46,511 INFO L225 Difference]: With dead ends: 281 [2021-10-28 09:06:46,511 INFO L226 Difference]: Without dead ends: 281 [2021-10-28 09:06:46,512 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:06:46,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-10-28 09:06:46,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2021-10-28 09:06:46,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 216 states have (on average 1.5648148148148149) internal successors, (338), 246 states have internal predecessors, (338), 22 states have call successors, (22), 22 states have call predecessors, (22), 31 states have return successors, (44), 13 states have call predecessors, (44), 21 states have call successors, (44) [2021-10-28 09:06:46,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 404 transitions. [2021-10-28 09:06:46,529 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 404 transitions. Word has length 13 [2021-10-28 09:06:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:46,529 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 404 transitions. [2021-10-28 09:06:46,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:06:46,529 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 404 transitions. [2021-10-28 09:06:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:06:46,530 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:46,531 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:46,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:06:46,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:06:46,743 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr5ENSURES_VIOLATIONMEMORY_LEAK === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 09:06:46,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:46,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1772709125, now seen corresponding path program 1 times [2021-10-28 09:06:46,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:06:46,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951423199] [2021-10-28 09:06:46,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:46,744 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:06:46,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:06:46,745 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:06:46,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 09:06:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:06:46,985 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:06:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:06:47,124 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 09:06:47,125 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:06:47,126 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr5ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:06:47,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr0REQUIRES_VIOLATION [2021-10-28 09:06:47,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr1REQUIRES_VIOLATION [2021-10-28 09:06:47,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr2REQUIRES_VIOLATION [2021-10-28 09:06:47,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr3REQUIRES_VIOLATION [2021-10-28 09:06:47,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr4REQUIRES_VIOLATION [2021-10-28 09:06:47,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr5REQUIRES_VIOLATION [2021-10-28 09:06:47,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr6REQUIRES_VIOLATION [2021-10-28 09:06:47,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr7REQUIRES_VIOLATION [2021-10-28 09:06:47,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr0REQUIRES_VIOLATION [2021-10-28 09:06:47,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr1REQUIRES_VIOLATION [2021-10-28 09:06:47,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr2REQUIRES_VIOLATION [2021-10-28 09:06:47,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr3REQUIRES_VIOLATION [2021-10-28 09:06:47,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr4REQUIRES_VIOLATION [2021-10-28 09:06:47,131 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr5REQUIRES_VIOLATION [2021-10-28 09:06:47,131 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 09:06:47,131 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 09:06:47,131 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:06:47,132 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:06:47,132 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:06:47,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:06:47,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:06:47,353 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:47,356 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:06:47,384 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 09:06:47,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:06:47 BoogieIcfgContainer [2021-10-28 09:06:47,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:06:47,414 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:06:47,415 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:06:47,415 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:06:47,416 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:06:41" (3/4) ... [2021-10-28 09:06:47,419 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:06:47,420 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:06:47,422 INFO L168 Benchmark]: Toolchain (without parser) took 7961.69 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 39.2 MB in the beginning and 34.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:47,422 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 60.8 MB. Free memory is still 41.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:06:47,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 577.93 ms. Allocated memory is still 60.8 MB. Free memory was 39.0 MB in the beginning and 39.9 MB in the end (delta: -909.3 kB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:47,424 INFO L168 Benchmark]: Boogie Preprocessor took 84.21 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 36.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:47,425 INFO L168 Benchmark]: RCFGBuilder took 1148.67 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 36.5 MB in the beginning and 48.5 MB in the end (delta: -12.0 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:47,425 INFO L168 Benchmark]: TraceAbstraction took 6137.27 ms. Allocated memory is still 81.8 MB. Free memory was 47.8 MB in the beginning and 34.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:06:47,426 INFO L168 Benchmark]: Witness Printer took 5.20 ms. Allocated memory is still 81.8 MB. Free memory was 34.9 MB in the beginning and 34.3 MB in the end (delta: 615.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:06:47,430 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 60.8 MB. Free memory is still 41.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 577.93 ms. Allocated memory is still 60.8 MB. Free memory was 39.0 MB in the beginning and 39.9 MB in the end (delta: -909.3 kB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 84.21 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 36.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1148.67 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 36.5 MB in the beginning and 48.5 MB in the end (delta: -12.0 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6137.27 ms. Allocated memory is still 81.8 MB. Free memory was 47.8 MB in the beginning and 34.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.20 ms. Allocated memory is still 81.8 MB. Free memory was 34.9 MB in the beginning and 34.3 MB in the end (delta: 615.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 592. Possible FailurePath: [L528] struct cell *S; [L529] int pc1 = 1; [L530] int pc4 = 1; [L531] static struct cell *t1 = ((void *)0); [L532] static struct cell *x1 = ((void *)0); [L561] struct cell* garbage; [L562] static struct cell *t4 = ((void *)0); [L563] static struct cell *x4 = ((void *)0); [L566] static int res4; VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=16, \old(pc4)=26, \old(res4)=20, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc4 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L535] pc1++ [L536] case 1: [L537] x1 = malloc(sizeof(*x1)) [L538] x1->data = 0 VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={1:0}, x4={0:0}] [L539] x1->next = ((void *)0) VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={1:0}, x4={0:0}] [L596] RET push() VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={1:0}, x4={0:0}] [L594] COND FALSE !(S || 1 != pc4 || __VERIFIER_nondet_int()) [L600] COND FALSE !(\read(*garbage)) VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={1:0}, x4={0:0}] [L605] S = ((void *)0) [L606] t1 = ((void *)0) [L607] x1 = ((void *)0) [L608] t4 = ((void *)0) [L609] x4 = ((void *)0) [L610] return !!garbage; VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, \result=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 96 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 5.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 668 SDtfs, 519 SDslu, 494 SDs, 0 SdLazy, 164 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=295occurred in iteration=5, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 118 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 296 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1050 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 09:06:47,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d10cd8-50e4-4b0b-b99a-d97fb25d23fd/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...