./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe028_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b26edc-c829-4e72-a571-aebdb2216ed2/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b26edc-c829-4e72-a571-aebdb2216ed2/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b26edc-c829-4e72-a571-aebdb2216ed2/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b26edc-c829-4e72-a571-aebdb2216ed2/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe028_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b26edc-c829-4e72-a571-aebdb2216ed2/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b26edc-c829-4e72-a571-aebdb2216ed2/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e87dcdf200473e63a59de50dc19079e5b1105965 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:27:48,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:27:48,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:27:48,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:27:48,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:27:48,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:27:48,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:27:48,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:27:48,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:27:48,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:27:48,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:27:48,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:27:48,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:27:48,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:27:48,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:27:48,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:27:48,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:27:48,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:27:48,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:27:48,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:27:48,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:27:48,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:27:48,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:27:48,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:27:48,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:27:48,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:27:48,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:27:48,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:27:48,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:27:48,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:27:48,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:27:48,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:27:48,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:27:48,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:27:48,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:27:48,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:27:48,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:27:48,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:27:48,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:27:48,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:27:48,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:27:48,624 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b26edc-c829-4e72-a571-aebdb2216ed2/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:27:48,657 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:27:48,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:27:48,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:27:48,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:27:48,660 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:27:48,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:27:48,660 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:27:48,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:27:48,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:27:48,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:27:48,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:27:48,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:27:48,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:27:48,662 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:27:48,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:27:48,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:27:48,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:27:48,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:27:48,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:27:48,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:27:48,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:27:48,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:27:48,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:27:48,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:27:48,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:27:48,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:27:48,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:27:48,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:27:48,665 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_a0b26edc-c829-4e72-a571-aebdb2216ed2/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b26edc-c829-4e72-a571-aebdb2216ed2/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e87dcdf200473e63a59de50dc19079e5b1105965 [2021-10-11 00:27:48,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:27:48,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:27:48,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:27:48,968 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:27:48,969 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:27:48,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b26edc-c829-4e72-a571-aebdb2216ed2/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/pthread-wmm/safe028_tso.opt.i [2021-10-11 00:27:49,035 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b26edc-c829-4e72-a571-aebdb2216ed2/bin/uautomizer-Z5i5R5N3CC/data/c3c31e6e1/d62baddd5ec24bb5a043bb2f25efcf50/FLAGd9c175076 [2021-10-11 00:27:49,599 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:27:49,600 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b26edc-c829-4e72-a571-aebdb2216ed2/sv-benchmarks/c/pthread-wmm/safe028_tso.opt.i [2021-10-11 00:27:49,623 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b26edc-c829-4e72-a571-aebdb2216ed2/bin/uautomizer-Z5i5R5N3CC/data/c3c31e6e1/d62baddd5ec24bb5a043bb2f25efcf50/FLAGd9c175076 [2021-10-11 00:27:49,856 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b26edc-c829-4e72-a571-aebdb2216ed2/bin/uautomizer-Z5i5R5N3CC/data/c3c31e6e1/d62baddd5ec24bb5a043bb2f25efcf50 [2021-10-11 00:27:49,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:27:49,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:27:49,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:27:49,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:27:49,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:27:49,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:27:49" (1/1) ... [2021-10-11 00:27:49,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738c1904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:49, skipping insertion in model container [2021-10-11 00:27:49,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:27:49" (1/1) ... [2021-10-11 00:27:49,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:27:49,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:27:50,139 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b26edc-c829-4e72-a571-aebdb2216ed2/sv-benchmarks/c/pthread-wmm/safe028_tso.opt.i[949,962] [2021-10-11 00:27:50,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:27:50,388 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:27:50,399 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b26edc-c829-4e72-a571-aebdb2216ed2/sv-benchmarks/c/pthread-wmm/safe028_tso.opt.i[949,962] [2021-10-11 00:27:50,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:27:50,495 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:27:50,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:50 WrapperNode [2021-10-11 00:27:50,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:27:50,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:27:50,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:27:50,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:27:50,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:50" (1/1) ... [2021-10-11 00:27:50,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:50" (1/1) ... [2021-10-11 00:27:50,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:27:50,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:27:50,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:27:50,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:27:50,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:50" (1/1) ... [2021-10-11 00:27:50,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:50" (1/1) ... [2021-10-11 00:27:50,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:50" (1/1) ... [2021-10-11 00:27:50,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:50" (1/1) ... [2021-10-11 00:27:50,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:50" (1/1) ... [2021-10-11 00:27:50,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:50" (1/1) ... [2021-10-11 00:27:50,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:50" (1/1) ... [2021-10-11 00:27:50,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:27:50,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:27:50,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:27:50,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:27:50,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:50" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b26edc-c829-4e72-a571-aebdb2216ed2/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:27:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:27:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 00:27:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:27:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:27:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-11 00:27:50,695 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-11 00:27:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-11 00:27:50,695 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-11 00:27:50,695 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-11 00:27:50,696 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-11 00:27:50,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:27:50,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 00:27:50,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:27:50,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:27:50,698 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-11 00:27:51,102 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:27:51,102 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 00:27:51,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:51 BoogieIcfgContainer [2021-10-11 00:27:51,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:27:51,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:27:51,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:27:51,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:27:51,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:27:49" (1/3) ... [2021-10-11 00:27:51,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d7bdc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:27:51, skipping insertion in model container [2021-10-11 00:27:51,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:50" (2/3) ... [2021-10-11 00:27:51,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d7bdc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:27:51, skipping insertion in model container [2021-10-11 00:27:51,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:51" (3/3) ... [2021-10-11 00:27:51,114 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_tso.opt.i [2021-10-11 00:27:51,132 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 00:27:51,132 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:27:51,135 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:27:51,136 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 00:27:51,163 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,163 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,163 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,163 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,164 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,164 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,164 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,164 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,165 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,165 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,165 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,165 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,166 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,166 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,166 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,166 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,166 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,167 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,167 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,167 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,167 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,167 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,168 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,168 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,168 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,169 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,169 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,169 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,169 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,169 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,169 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,170 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,170 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,170 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,171 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,171 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,173 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,173 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,174 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,174 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,178 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,178 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,179 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,179 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,181 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,181 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,181 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,181 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:27:51,183 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 00:27:51,192 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 00:27:51,210 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:27:51,210 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:27:51,210 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:27:51,210 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:27:51,210 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:27:51,211 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:27:51,211 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:27:51,211 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:27:51,223 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 00:27:51,225 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2021-10-11 00:27:51,228 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2021-10-11 00:27:51,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-10-11 00:27:51,272 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-10-11 00:27:51,272 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 00:27:51,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-10-11 00:27:51,279 INFO L116 LiptonReduction]: Number of co-enabled transitions 1212 [2021-10-11 00:27:53,480 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-10-11 00:27:53,654 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-10-11 00:27:53,955 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-10-11 00:27:54,067 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-10-11 00:27:54,312 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-10-11 00:27:54,472 INFO L131 LiptonReduction]: Checked pairs total: 2149 [2021-10-11 00:27:54,472 INFO L133 LiptonReduction]: Total number of compositions: 63 [2021-10-11 00:27:54,479 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2021-10-11 00:27:54,500 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2021-10-11 00:27:54,502 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2021-10-11 00:27:54,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 00:27:54,508 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:54,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:54,509 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:54,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:54,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1647971710, now seen corresponding path program 1 times [2021-10-11 00:27:54,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:54,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336501490] [2021-10-11 00:27:54,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:54,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:54,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336501490] [2021-10-11 00:27:54,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:54,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:27:54,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541717083] [2021-10-11 00:27:54,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:27:54,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:54,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:27:54,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:27:54,729 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2021-10-11 00:27:54,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:54,774 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2021-10-11 00:27:54,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:27:54,777 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-10-11 00:27:54,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:54,800 INFO L225 Difference]: With dead ends: 274 [2021-10-11 00:27:54,800 INFO L226 Difference]: Without dead ends: 226 [2021-10-11 00:27:54,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:27:54,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-11 00:27:54,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-10-11 00:27:54,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-10-11 00:27:54,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2021-10-11 00:27:54,879 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2021-10-11 00:27:54,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:54,880 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2021-10-11 00:27:54,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:27:54,881 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2021-10-11 00:27:54,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:27:54,882 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:54,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:54,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:27:54,883 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:54,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:54,883 INFO L82 PathProgramCache]: Analyzing trace with hash -452492411, now seen corresponding path program 1 times [2021-10-11 00:27:54,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:54,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295275407] [2021-10-11 00:27:54,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:55,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295275407] [2021-10-11 00:27:55,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:55,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:27:55,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267534751] [2021-10-11 00:27:55,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:27:55,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:55,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:27:55,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:55,065 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2021-10-11 00:27:55,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:55,108 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2021-10-11 00:27:55,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:27:55,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 00:27:55,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:55,114 INFO L225 Difference]: With dead ends: 250 [2021-10-11 00:27:55,115 INFO L226 Difference]: Without dead ends: 202 [2021-10-11 00:27:55,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:55,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-11 00:27:55,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-10-11 00:27:55,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2021-10-11 00:27:55,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2021-10-11 00:27:55,150 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2021-10-11 00:27:55,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:55,150 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2021-10-11 00:27:55,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:27:55,151 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2021-10-11 00:27:55,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:27:55,154 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:55,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:55,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:27:55,154 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:55,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:55,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1142322672, now seen corresponding path program 1 times [2021-10-11 00:27:55,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:55,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156707301] [2021-10-11 00:27:55,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:55,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:55,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156707301] [2021-10-11 00:27:55,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:55,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:27:55,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536795612] [2021-10-11 00:27:55,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:27:55,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:55,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:27:55,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:55,342 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2021-10-11 00:27:55,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:55,409 INFO L93 Difference]: Finished difference Result 262 states and 697 transitions. [2021-10-11 00:27:55,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:27:55,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 00:27:55,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:55,413 INFO L225 Difference]: With dead ends: 262 [2021-10-11 00:27:55,413 INFO L226 Difference]: Without dead ends: 154 [2021-10-11 00:27:55,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:27:55,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-11 00:27:55,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-10-11 00:27:55,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2021-10-11 00:27:55,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 392 transitions. [2021-10-11 00:27:55,431 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 392 transitions. Word has length 10 [2021-10-11 00:27:55,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:55,431 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 392 transitions. [2021-10-11 00:27:55,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:27:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 392 transitions. [2021-10-11 00:27:55,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:27:55,435 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:55,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:55,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:27:55,435 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:55,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:55,440 INFO L82 PathProgramCache]: Analyzing trace with hash -2010812812, now seen corresponding path program 1 times [2021-10-11 00:27:55,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:55,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421225296] [2021-10-11 00:27:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:55,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:55,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421225296] [2021-10-11 00:27:55,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:55,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:27:55,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704355056] [2021-10-11 00:27:55,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:27:55,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:55,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:27:55,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:27:55,515 INFO L87 Difference]: Start difference. First operand 154 states and 392 transitions. Second operand 3 states. [2021-10-11 00:27:55,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:55,526 INFO L93 Difference]: Finished difference Result 130 states and 299 transitions. [2021-10-11 00:27:55,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:27:55,527 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2021-10-11 00:27:55,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:55,528 INFO L225 Difference]: With dead ends: 130 [2021-10-11 00:27:55,528 INFO L226 Difference]: Without dead ends: 130 [2021-10-11 00:27:55,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:27:55,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-11 00:27:55,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-10-11 00:27:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2021-10-11 00:27:55,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 299 transitions. [2021-10-11 00:27:55,535 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 299 transitions. Word has length 11 [2021-10-11 00:27:55,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:55,535 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 299 transitions. [2021-10-11 00:27:55,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:27:55,535 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 299 transitions. [2021-10-11 00:27:55,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:27:55,536 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:55,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:55,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:27:55,536 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:55,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:55,537 INFO L82 PathProgramCache]: Analyzing trace with hash -216590115, now seen corresponding path program 1 times [2021-10-11 00:27:55,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:55,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394006953] [2021-10-11 00:27:55,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:55,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:55,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394006953] [2021-10-11 00:27:55,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:55,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:27:55,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584008322] [2021-10-11 00:27:55,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:27:55,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:55,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:27:55,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:55,585 INFO L87 Difference]: Start difference. First operand 130 states and 299 transitions. Second operand 4 states. [2021-10-11 00:27:55,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:55,604 INFO L93 Difference]: Finished difference Result 92 states and 186 transitions. [2021-10-11 00:27:55,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:27:55,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 00:27:55,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:55,605 INFO L225 Difference]: With dead ends: 92 [2021-10-11 00:27:55,605 INFO L226 Difference]: Without dead ends: 92 [2021-10-11 00:27:55,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:55,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-11 00:27:55,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-11 00:27:55,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-10-11 00:27:55,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2021-10-11 00:27:55,610 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 12 [2021-10-11 00:27:55,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:55,610 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2021-10-11 00:27:55,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:27:55,610 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2021-10-11 00:27:55,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:27:55,611 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:55,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:55,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:27:55,611 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:55,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:55,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1316923756, now seen corresponding path program 1 times [2021-10-11 00:27:55,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:55,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502973035] [2021-10-11 00:27:55,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:55,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:55,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502973035] [2021-10-11 00:27:55,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:55,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:27:55,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139570075] [2021-10-11 00:27:55,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:27:55,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:55,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:27:55,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:55,666 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 5 states. [2021-10-11 00:27:55,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:55,692 INFO L93 Difference]: Finished difference Result 73 states and 148 transitions. [2021-10-11 00:27:55,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:27:55,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-10-11 00:27:55,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:55,693 INFO L225 Difference]: With dead ends: 73 [2021-10-11 00:27:55,693 INFO L226 Difference]: Without dead ends: 73 [2021-10-11 00:27:55,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:55,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-11 00:27:55,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-11 00:27:55,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-10-11 00:27:55,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 148 transitions. [2021-10-11 00:27:55,697 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 148 transitions. Word has length 14 [2021-10-11 00:27:55,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:55,697 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 148 transitions. [2021-10-11 00:27:55,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:27:55,697 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 148 transitions. [2021-10-11 00:27:55,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:27:55,698 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:55,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:55,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:27:55,698 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:55,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:55,699 INFO L82 PathProgramCache]: Analyzing trace with hash 193291591, now seen corresponding path program 1 times [2021-10-11 00:27:55,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:55,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848408912] [2021-10-11 00:27:55,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:55,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848408912] [2021-10-11 00:27:55,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:55,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:27:55,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052245165] [2021-10-11 00:27:55,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:27:55,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:55,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:27:55,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:55,772 INFO L87 Difference]: Start difference. First operand 73 states and 148 transitions. Second operand 5 states. [2021-10-11 00:27:55,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:55,806 INFO L93 Difference]: Finished difference Result 87 states and 170 transitions. [2021-10-11 00:27:55,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:27:55,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-10-11 00:27:55,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:55,807 INFO L225 Difference]: With dead ends: 87 [2021-10-11 00:27:55,807 INFO L226 Difference]: Without dead ends: 34 [2021-10-11 00:27:55,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:27:55,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-11 00:27:55,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-11 00:27:55,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 00:27:55,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2021-10-11 00:27:55,809 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 17 [2021-10-11 00:27:55,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:55,810 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2021-10-11 00:27:55,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:27:55,810 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2021-10-11 00:27:55,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:27:55,810 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:27:55,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:27:55,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 00:27:55,811 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:27:55,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:55,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1222037843, now seen corresponding path program 2 times [2021-10-11 00:27:55,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:55,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544692808] [2021-10-11 00:27:55,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:55,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:55,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544692808] [2021-10-11 00:27:55,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:27:55,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:27:55,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133250777] [2021-10-11 00:27:55,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:27:55,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:55,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:27:55,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:27:55,900 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 5 states. [2021-10-11 00:27:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:55,930 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2021-10-11 00:27:55,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:27:55,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-10-11 00:27:55,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:27:55,931 INFO L225 Difference]: With dead ends: 33 [2021-10-11 00:27:55,931 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:27:55,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:27:55,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:27:55,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:27:55,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:27:55,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:27:55,932 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-11 00:27:55,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:27:55,932 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:27:55,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:27:55,932 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:27:55,933 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:27:55,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 00:27:55,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:27:55 BasicIcfg [2021-10-11 00:27:55,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:27:55,936 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:27:55,936 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:27:55,937 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:27:55,937 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:51" (3/4) ... [2021-10-11 00:27:55,940 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:27:55,947 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-11 00:27:55,947 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-11 00:27:55,947 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-11 00:27:55,952 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-11 00:27:55,953 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 00:27:55,953 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:27:55,953 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:27:56,002 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b26edc-c829-4e72-a571-aebdb2216ed2/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:27:56,002 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:27:56,003 INFO L168 Benchmark]: Toolchain (without parser) took 6138.71 ms. Allocated memory was 90.2 MB in the beginning and 161.5 MB in the end (delta: 71.3 MB). Free memory was 67.3 MB in the beginning and 124.7 MB in the end (delta: -57.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:56,004 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory was 66.7 MB in the beginning and 66.7 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:27:56,005 INFO L168 Benchmark]: CACSL2BoogieTranslator took 630.51 ms. Allocated memory is still 90.2 MB. Free memory was 67.3 MB in the beginning and 42.6 MB in the end (delta: 24.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:56,005 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.86 ms. Allocated memory is still 90.2 MB. Free memory was 42.6 MB in the beginning and 40.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:56,006 INFO L168 Benchmark]: Boogie Preprocessor took 41.74 ms. Allocated memory is still 90.2 MB. Free memory was 40.5 MB in the beginning and 39.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:56,007 INFO L168 Benchmark]: RCFGBuilder took 512.02 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 39.4 MB in the beginning and 75.8 MB in the end (delta: -36.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:56,007 INFO L168 Benchmark]: TraceAbstraction took 4830.53 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 75.2 MB in the beginning and 127.8 MB in the end (delta: -52.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:27:56,008 INFO L168 Benchmark]: Witness Printer took 65.91 ms. Allocated memory is still 161.5 MB. Free memory was 127.8 MB in the beginning and 124.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:56,012 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory was 66.7 MB in the beginning and 66.7 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 630.51 ms. Allocated memory is still 90.2 MB. Free memory was 67.3 MB in the beginning and 42.6 MB in the end (delta: 24.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.86 ms. Allocated memory is still 90.2 MB. Free memory was 42.6 MB in the beginning and 40.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.74 ms. Allocated memory is still 90.2 MB. Free memory was 40.5 MB in the beginning and 39.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 512.02 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 39.4 MB in the beginning and 75.8 MB in the end (delta: -36.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4830.53 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 75.2 MB in the beginning and 127.8 MB in the end (delta: -52.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 65.91 ms. Allocated memory is still 161.5 MB. Free memory was 127.8 MB in the beginning and 124.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 784 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 49 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.2s, 82 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 22 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 2149 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 148 SDtfs, 126 SDslu, 207 SDs, 0 SdLazy, 77 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3082 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 proved your program to be correct! Received shutdown request...