./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe006_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe006_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/bin/uautomizer-WNIpwEf4Nt --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 090e2f89585266bac89c2a7b2fff416255c8b847 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:58:35,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:58:35,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:58:35,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:58:35,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:58:35,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:58:35,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:58:35,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:58:35,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:58:35,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:58:35,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:58:35,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:58:35,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:58:35,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:58:35,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:58:35,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:58:35,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:58:35,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:58:35,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:58:35,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:58:35,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:58:35,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:58:35,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:58:35,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:58:35,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:58:35,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:58:35,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:58:35,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:58:35,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:58:35,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:58:35,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:58:35,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:58:35,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:58:35,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:58:35,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:58:35,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:58:35,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:58:35,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:58:35,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:58:35,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:58:35,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:58:35,565 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:58:35,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:58:35,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:58:35,626 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:58:35,626 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:58:35,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:58:35,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:58:35,638 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:58:35,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:58:35,638 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:58:35,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:58:35,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:58:35,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:58:35,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:58:35,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:58:35,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:58:35,640 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:58:35,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:58:35,640 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:58:35,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:58:35,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:58:35,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:58:35,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:58:35,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:58:35,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:58:35,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:58:35,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:58:35,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:58:35,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:58:35,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:58:35,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:58:35,642 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_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 090e2f89585266bac89c2a7b2fff416255c8b847 [2021-10-13 00:58:35,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:58:35,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:58:35,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:58:35,998 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:58:35,999 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:58:36,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/pthread-wmm/safe006_tso.oepc.i [2021-10-13 00:58:36,095 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/bin/uautomizer-WNIpwEf4Nt/data/76bb6a101/d7680319d6a5430e8f34aafb9c8daea8/FLAG9eaea2111 [2021-10-13 00:58:36,815 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:58:36,816 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/sv-benchmarks/c/pthread-wmm/safe006_tso.oepc.i [2021-10-13 00:58:36,840 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/bin/uautomizer-WNIpwEf4Nt/data/76bb6a101/d7680319d6a5430e8f34aafb9c8daea8/FLAG9eaea2111 [2021-10-13 00:58:37,069 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/bin/uautomizer-WNIpwEf4Nt/data/76bb6a101/d7680319d6a5430e8f34aafb9c8daea8 [2021-10-13 00:58:37,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:58:37,077 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:58:37,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:58:37,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:58:37,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:58:37,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:58:37" (1/1) ... [2021-10-13 00:58:37,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@165652f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:37, skipping insertion in model container [2021-10-13 00:58:37,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:58:37" (1/1) ... [2021-10-13 00:58:37,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:58:37,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:58:37,344 WARN L228 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_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/sv-benchmarks/c/pthread-wmm/safe006_tso.oepc.i[950,963] [2021-10-13 00:58:37,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:58:37,610 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:58:37,629 WARN L228 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_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/sv-benchmarks/c/pthread-wmm/safe006_tso.oepc.i[950,963] [2021-10-13 00:58:37,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:58:37,776 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:58:37,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:37 WrapperNode [2021-10-13 00:58:37,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:58:37,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:58:37,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:58:37,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:58:37,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:37" (1/1) ... [2021-10-13 00:58:37,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:37" (1/1) ... [2021-10-13 00:58:37,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:58:37,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:58:37,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:58:37,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:58:37,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:37" (1/1) ... [2021-10-13 00:58:37,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:37" (1/1) ... [2021-10-13 00:58:37,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:37" (1/1) ... [2021-10-13 00:58:37,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:37" (1/1) ... [2021-10-13 00:58:37,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:37" (1/1) ... [2021-10-13 00:58:37,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:37" (1/1) ... [2021-10-13 00:58:37,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:37" (1/1) ... [2021-10-13 00:58:37,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:58:37,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:58:37,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:58:37,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:58:37,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:37" (1/1) ... [2021-10-13 00:58:37,944 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:58:37,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:58:37,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:58:38,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:58:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 00:58:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 00:58:38,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:58:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:58:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-13 00:58:38,056 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-13 00:58:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-13 00:58:38,057 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-13 00:58:38,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:58:38,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 00:58:38,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:58:38,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:58:38,059 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 00:58:38,465 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:58:38,465 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 00:58:38,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:58:38 BoogieIcfgContainer [2021-10-13 00:58:38,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:58:38,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:58:38,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:58:38,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:58:38,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:58:37" (1/3) ... [2021-10-13 00:58:38,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ef9efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:58:38, skipping insertion in model container [2021-10-13 00:58:38,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:37" (2/3) ... [2021-10-13 00:58:38,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ef9efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:58:38, skipping insertion in model container [2021-10-13 00:58:38,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:58:38" (3/3) ... [2021-10-13 00:58:38,480 INFO L111 eAbstractionObserver]: Analyzing ICFG safe006_tso.oepc.i [2021-10-13 00:58:38,487 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 00:58:38,488 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:58:38,488 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:58:38,488 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 00:58:38,525 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,525 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,525 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,526 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,526 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,526 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,527 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,527 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,528 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,528 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,529 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,529 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,530 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,530 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,530 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,531 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,531 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,531 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,532 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,532 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,533 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,533 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,534 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,534 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,538 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,539 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,539 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,540 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,545 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,545 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,546 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,546 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:58:38,549 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 00:58:38,607 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:58:38,628 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=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-10-13 00:58:38,642 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 00:58:38,677 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 00:58:38,720 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 67 transitions, 144 flow [2021-10-13 00:58:38,724 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 67 transitions, 144 flow [2021-10-13 00:58:38,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 144 flow [2021-10-13 00:58:38,808 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2021-10-13 00:58:38,812 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 00:58:38,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-10-13 00:58:38,822 INFO L116 LiptonReduction]: Number of co-enabled transitions 756 [2021-10-13 00:58:42,159 INFO L131 LiptonReduction]: Checked pairs total: 1496 [2021-10-13 00:58:42,159 INFO L133 LiptonReduction]: Total number of compositions: 62 [2021-10-13 00:58:42,169 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2021-10-13 00:58:42,187 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 58 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 57 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:58:42,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 57 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:58:42,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 00:58:42,197 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:58:42,198 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:58:42,199 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 00:58:42,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:58:42,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1311866131, now seen corresponding path program 1 times [2021-10-13 00:58:42,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:58:42,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536053] [2021-10-13 00:58:42,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:42,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:58:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:58:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:58:42,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:58:42,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536053] [2021-10-13 00:58:42,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536053] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:58:42,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:58:42,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 00:58:42,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535987958] [2021-10-13 00:58:42,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:58:42,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:58:42,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:58:42,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:58:42,609 INFO L87 Difference]: Start difference. First operand has 58 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 57 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:58:42,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:58:42,640 INFO L93 Difference]: Finished difference Result 57 states and 117 transitions. [2021-10-13 00:58:42,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:58:42,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 00:58:42,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:58:42,654 INFO L225 Difference]: With dead ends: 57 [2021-10-13 00:58:42,655 INFO L226 Difference]: Without dead ends: 57 [2021-10-13 00:58:42,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:58:42,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-13 00:58:42,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-10-13 00:58:42,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 56 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:58:42,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 117 transitions. [2021-10-13 00:58:42,725 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 117 transitions. Word has length 6 [2021-10-13 00:58:42,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:58:42,726 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 117 transitions. [2021-10-13 00:58:42,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:58:42,728 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 117 transitions. [2021-10-13 00:58:42,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 00:58:42,731 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:58:42,735 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:58:42,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:58:42,736 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 00:58:42,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:58:42,738 INFO L82 PathProgramCache]: Analyzing trace with hash -2031139743, now seen corresponding path program 1 times [2021-10-13 00:58:42,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:58:42,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282895415] [2021-10-13 00:58:42,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:42,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:58:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:58:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:58:42,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:58:42,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282895415] [2021-10-13 00:58:42,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282895415] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:58:42,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:58:42,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:58:42,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563473896] [2021-10-13 00:58:42,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:58:42,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:58:42,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:58:42,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:58:42,918 INFO L87 Difference]: Start difference. First operand 57 states and 117 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:58:42,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:58:42,940 INFO L93 Difference]: Finished difference Result 54 states and 109 transitions. [2021-10-13 00:58:42,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:58:42,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 00:58:42,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:58:42,943 INFO L225 Difference]: With dead ends: 54 [2021-10-13 00:58:42,943 INFO L226 Difference]: Without dead ends: 54 [2021-10-13 00:58:42,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:58:42,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-13 00:58:42,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-13 00:58:42,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.056603773584906) internal successors, (109), 53 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:58:42,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 109 transitions. [2021-10-13 00:58:42,953 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 109 transitions. Word has length 7 [2021-10-13 00:58:42,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:58:42,954 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 109 transitions. [2021-10-13 00:58:42,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:58:42,954 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 109 transitions. [2021-10-13 00:58:42,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 00:58:42,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:58:42,955 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:58:42,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:58:42,956 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 00:58:42,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:58:42,957 INFO L82 PathProgramCache]: Analyzing trace with hash -2013166160, now seen corresponding path program 1 times [2021-10-13 00:58:42,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:58:42,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578935328] [2021-10-13 00:58:42,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:42,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:58:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:58:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:58:43,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:58:43,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578935328] [2021-10-13 00:58:43,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578935328] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:58:43,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:58:43,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:58:43,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278783515] [2021-10-13 00:58:43,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:58:43,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:58:43,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:58:43,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:58:43,116 INFO L87 Difference]: Start difference. First operand 54 states and 109 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:58:43,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:58:43,128 INFO L93 Difference]: Finished difference Result 51 states and 101 transitions. [2021-10-13 00:58:43,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:58:43,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 00:58:43,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:58:43,130 INFO L225 Difference]: With dead ends: 51 [2021-10-13 00:58:43,131 INFO L226 Difference]: Without dead ends: 51 [2021-10-13 00:58:43,131 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:58:43,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-13 00:58:43,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-13 00:58:43,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 2.02) internal successors, (101), 50 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:58:43,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 101 transitions. [2021-10-13 00:58:43,139 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 101 transitions. Word has length 7 [2021-10-13 00:58:43,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:58:43,140 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 101 transitions. [2021-10-13 00:58:43,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:58:43,140 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 101 transitions. [2021-10-13 00:58:43,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:58:43,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:58:43,142 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:58:43,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:58:43,142 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 00:58:43,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:58:43,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1459155644, now seen corresponding path program 1 times [2021-10-13 00:58:43,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:58:43,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316286615] [2021-10-13 00:58:43,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:43,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:58:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:58:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:58:43,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:58:43,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316286615] [2021-10-13 00:58:43,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316286615] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:58:43,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:58:43,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:58:43,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410905436] [2021-10-13 00:58:43,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:58:43,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:58:43,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:58:43,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:58:43,225 INFO L87 Difference]: Start difference. First operand 51 states and 101 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:58:43,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:58:43,264 INFO L93 Difference]: Finished difference Result 69 states and 134 transitions. [2021-10-13 00:58:43,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:58:43,264 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 00:58:43,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:58:43,266 INFO L225 Difference]: With dead ends: 69 [2021-10-13 00:58:43,266 INFO L226 Difference]: Without dead ends: 51 [2021-10-13 00:58:43,266 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:58:43,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-13 00:58:43,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-13 00:58:43,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.98) internal successors, (99), 50 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:58:43,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 99 transitions. [2021-10-13 00:58:43,274 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 99 transitions. Word has length 8 [2021-10-13 00:58:43,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:58:43,274 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 99 transitions. [2021-10-13 00:58:43,275 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:58:43,275 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 99 transitions. [2021-10-13 00:58:43,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:58:43,276 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:58:43,276 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:58:43,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 00:58:43,276 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 00:58:43,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:58:43,277 INFO L82 PathProgramCache]: Analyzing trace with hash 2016353054, now seen corresponding path program 2 times [2021-10-13 00:58:43,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:58:43,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28657857] [2021-10-13 00:58:43,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:43,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:58:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:58:43,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:58:43,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:58:43,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28657857] [2021-10-13 00:58:43,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28657857] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:58:43,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:58:43,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:58:43,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108309709] [2021-10-13 00:58:43,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:58:43,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:58:43,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:58:43,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:58:43,395 INFO L87 Difference]: Start difference. First operand 51 states and 99 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:58:43,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:58:43,429 INFO L93 Difference]: Finished difference Result 60 states and 111 transitions. [2021-10-13 00:58:43,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:58:43,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 00:58:43,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:58:43,431 INFO L225 Difference]: With dead ends: 60 [2021-10-13 00:58:43,431 INFO L226 Difference]: Without dead ends: 36 [2021-10-13 00:58:43,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.8ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:58:43,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-13 00:58:43,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-13 00:58:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:58:43,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2021-10-13 00:58:43,444 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 8 [2021-10-13 00:58:43,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:58:43,444 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2021-10-13 00:58:43,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:58:43,445 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2021-10-13 00:58:43,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:58:43,446 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:58:43,446 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:58:43,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 00:58:43,448 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-13 00:58:43,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:58:43,449 INFO L82 PathProgramCache]: Analyzing trace with hash 581783128, now seen corresponding path program 1 times [2021-10-13 00:58:43,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:58:43,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64775985] [2021-10-13 00:58:43,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:43,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:58:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:58:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:58:43,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:58:43,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64775985] [2021-10-13 00:58:43,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64775985] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:58:43,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:58:43,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:58:43,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312121550] [2021-10-13 00:58:43,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:58:43,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:58:43,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:58:43,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:58:43,518 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:58:43,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:58:43,534 INFO L93 Difference]: Finished difference Result 30 states and 50 transitions. [2021-10-13 00:58:43,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:58:43,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 00:58:43,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:58:43,535 INFO L225 Difference]: With dead ends: 30 [2021-10-13 00:58:43,535 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:58:43,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:58:43,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:58:43,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:58:43,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:58:43,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:58:43,537 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-10-13 00:58:43,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:58:43,538 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:58:43,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:58:43,539 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:58:43,539 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:58:43,542 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:58:43,543 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 00:58:43,543 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 00:58:43,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 00:58:43,548 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 00:58:43,548 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:58:43,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:58:43 BasicIcfg [2021-10-13 00:58:43,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:58:43,552 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:58:43,553 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:58:43,553 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:58:43,553 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:58:38" (3/4) ... [2021-10-13 00:58:43,557 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:58:43,565 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-13 00:58:43,565 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-13 00:58:43,574 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-13 00:58:43,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:58:43,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:58:43,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:58:43,649 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:58:43,649 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:58:43,651 INFO L168 Benchmark]: Toolchain (without parser) took 6573.36 ms. Allocated memory was 90.2 MB in the beginning and 148.9 MB in the end (delta: 58.7 MB). Free memory was 58.7 MB in the beginning and 123.2 MB in the end (delta: -64.5 MB). Peak memory consumption was 54.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:58:43,652 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 90.2 MB. Free memory is still 59.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:58:43,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.96 ms. Allocated memory is still 90.2 MB. Free memory was 58.6 MB in the beginning and 39.5 MB in the end (delta: 19.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:58:43,656 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.52 ms. Allocated memory is still 90.2 MB. Free memory was 39.5 MB in the beginning and 37.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:58:43,657 INFO L168 Benchmark]: Boogie Preprocessor took 43.42 ms. Allocated memory is still 90.2 MB. Free memory was 37.6 MB in the beginning and 36.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:58:43,657 INFO L168 Benchmark]: RCFGBuilder took 557.13 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 36.2 MB in the beginning and 84.3 MB in the end (delta: -48.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:58:43,658 INFO L168 Benchmark]: TraceAbstraction took 5080.39 ms. Allocated memory was 113.2 MB in the beginning and 148.9 MB in the end (delta: 35.7 MB). Free memory was 83.9 MB in the beginning and 67.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 51.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:58:43,659 INFO L168 Benchmark]: Witness Printer took 96.76 ms. Allocated memory is still 148.9 MB. Free memory was 67.7 MB in the beginning and 123.2 MB in the end (delta: -55.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:58:43,662 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 90.2 MB. Free memory is still 59.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 700.96 ms. Allocated memory is still 90.2 MB. Free memory was 58.6 MB in the beginning and 39.5 MB in the end (delta: 19.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.52 ms. Allocated memory is still 90.2 MB. Free memory was 39.5 MB in the beginning and 37.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.42 ms. Allocated memory is still 90.2 MB. Free memory was 37.6 MB in the beginning and 36.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 557.13 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 36.2 MB in the beginning and 84.3 MB in the end (delta: -48.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5080.39 ms. Allocated memory was 113.2 MB in the beginning and 148.9 MB in the end (delta: 35.7 MB). Free memory was 83.9 MB in the beginning and 67.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 51.7 MB. Max. memory is 16.1 GB. * Witness Printer took 96.76 ms. Allocated memory is still 148.9 MB. Free memory was 67.7 MB in the beginning and 123.2 MB in the end (delta: -55.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3435.4ms, 72 PlacesBefore, 22 PlacesAfterwards, 67 TransitionsBefore, 15 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 62 TotalNumberOfCompositions, 1496 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 955, positive: 882, positive conditional: 0, positive unconditional: 882, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 537, positive: 514, positive conditional: 0, positive unconditional: 514, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 537, positive: 511, positive conditional: 0, positive unconditional: 511, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 105, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 955, positive: 368, positive conditional: 0, positive unconditional: 368, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 537, unknown conditional: 0, unknown unconditional: 537] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 82 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4942.8ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 16.3ms, AutomataDifference: 225.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3544.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 70 SDtfs, 81 SDslu, 53 SDs, 0 SdLazy, 23 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 62.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 88.5ms AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 30.7ms SsaConstructionTime, 207.1ms SatisfiabilityAnalysisTime, 513.0ms InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 219 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 00:58:43,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc3cb075-5dfe-446b-ac2f-b1b71531f1b2/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...