./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe034_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378f549a-d59e-48ba-930c-0c375b3343fd/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378f549a-d59e-48ba-930c-0c375b3343fd/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378f549a-d59e-48ba-930c-0c375b3343fd/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378f549a-d59e-48ba-930c-0c375b3343fd/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe034_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378f549a-d59e-48ba-930c-0c375b3343fd/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378f549a-d59e-48ba-930c-0c375b3343fd/bin/uautomizer-tBqnrhUYjU --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 f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:08:16,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:08:16,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:08:16,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:08:16,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:08:16,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:08:16,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:08:16,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:08:16,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:08:17,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:08:17,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:08:17,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:08:17,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:08:17,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:08:17,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:08:17,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:08:17,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:08:17,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:08:17,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:08:17,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:08:17,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:08:17,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:08:17,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:08:17,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:08:17,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:08:17,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:08:17,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:08:17,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:08:17,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:08:17,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:08:17,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:08:17,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:08:17,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:08:17,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:08:17,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:08:17,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:08:17,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:08:17,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:08:17,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:08:17,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:08:17,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:08:17,086 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378f549a-d59e-48ba-930c-0c375b3343fd/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 23:08:17,138 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:08:17,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:08:17,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:08:17,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:08:17,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:08:17,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:08:17,143 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:08:17,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:08:17,144 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:08:17,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:08:17,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:08:17,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:08:17,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:08:17,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:08:17,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:08:17,147 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:08:17,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:08:17,148 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:08:17,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:08:17,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:08:17,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:08:17,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:08:17,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:08:17,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:08:17,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:08:17,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:08:17,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:08:17,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:08:17,151 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 23:08:17,153 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 23:08:17,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:08:17,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:08:17,154 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_378f549a-d59e-48ba-930c-0c375b3343fd/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378f549a-d59e-48ba-930c-0c375b3343fd/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e [2021-11-02 23:08:17,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:08:17,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:08:17,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:08:17,524 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:08:17,525 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:08:17,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378f549a-d59e-48ba-930c-0c375b3343fd/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/pthread-wmm/safe034_tso.i [2021-11-02 23:08:17,632 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378f549a-d59e-48ba-930c-0c375b3343fd/bin/uautomizer-tBqnrhUYjU/data/1b15b0a84/0abd2a8ba4bc4b17966e95b3ae353e6d/FLAG4909fa3d2 [2021-11-02 23:08:18,290 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:08:18,290 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378f549a-d59e-48ba-930c-0c375b3343fd/sv-benchmarks/c/pthread-wmm/safe034_tso.i [2021-11-02 23:08:18,310 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378f549a-d59e-48ba-930c-0c375b3343fd/bin/uautomizer-tBqnrhUYjU/data/1b15b0a84/0abd2a8ba4bc4b17966e95b3ae353e6d/FLAG4909fa3d2 [2021-11-02 23:08:18,546 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378f549a-d59e-48ba-930c-0c375b3343fd/bin/uautomizer-tBqnrhUYjU/data/1b15b0a84/0abd2a8ba4bc4b17966e95b3ae353e6d [2021-11-02 23:08:18,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:08:18,550 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:08:18,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:08:18,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:08:18,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:08:18,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:08:18" (1/1) ... [2021-11-02 23:08:18,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d386d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:08:18, skipping insertion in model container [2021-11-02 23:08:18,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:08:18" (1/1) ... [2021-11-02 23:08:18,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:08:18,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:08:18,897 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_378f549a-d59e-48ba-930c-0c375b3343fd/sv-benchmarks/c/pthread-wmm/safe034_tso.i[945,958] [2021-11-02 23:08:19,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:08:19,145 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:08:19,161 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_378f549a-d59e-48ba-930c-0c375b3343fd/sv-benchmarks/c/pthread-wmm/safe034_tso.i[945,958] [2021-11-02 23:08:19,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:08:19,303 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:08:19,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:08:19 WrapperNode [2021-11-02 23:08:19,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:08:19,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:08:19,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:08:19,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:08:19,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:08:19" (1/1) ... [2021-11-02 23:08:19,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:08:19" (1/1) ... [2021-11-02 23:08:19,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:08:19,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:08:19,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:08:19,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:08:19,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:08:19" (1/1) ... [2021-11-02 23:08:19,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:08:19" (1/1) ... [2021-11-02 23:08:19,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:08:19" (1/1) ... [2021-11-02 23:08:19,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:08:19" (1/1) ... [2021-11-02 23:08:19,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:08:19" (1/1) ... [2021-11-02 23:08:19,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:08:19" (1/1) ... [2021-11-02 23:08:19,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:08:19" (1/1) ... [2021-11-02 23:08:19,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:08:19,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:08:19,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:08:19,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:08:19,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:08:19" (1/1) ... [2021-11-02 23:08:19,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:08:19,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378f549a-d59e-48ba-930c-0c375b3343fd/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:08:19,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378f549a-d59e-48ba-930c-0c375b3343fd/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:08:19,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378f549a-d59e-48ba-930c-0c375b3343fd/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:08:19,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 23:08:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-02 23:08:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:08:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 23:08:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-02 23:08:19,584 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-02 23:08:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-02 23:08:19,584 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-02 23:08:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-02 23:08:19,584 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-02 23:08:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:08:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-02 23:08:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:08:19,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:08:19,587 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-02 23:08:20,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:08:20,129 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-02 23:08:20,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:08:20 BoogieIcfgContainer [2021-11-02 23:08:20,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:08:20,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:08:20,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:08:20,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:08:20,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:08:18" (1/3) ... [2021-11-02 23:08:20,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26125f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:08:20, skipping insertion in model container [2021-11-02 23:08:20,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:08:19" (2/3) ... [2021-11-02 23:08:20,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26125f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:08:20, skipping insertion in model container [2021-11-02 23:08:20,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:08:20" (3/3) ... [2021-11-02 23:08:20,140 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.i [2021-11-02 23:08:20,146 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-02 23:08:20,146 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:08:20,147 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 23:08:20,147 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-02 23:08:20,184 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,184 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,185 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,185 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,185 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,185 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,186 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,186 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,187 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,187 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,188 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,188 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,189 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,189 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,189 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,190 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,190 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,190 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,191 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,191 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,192 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,192 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,192 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,192 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,198 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,204 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,204 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,205 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,205 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,208 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,209 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,209 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,209 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 23:08:20,212 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-02 23:08:20,293 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:08:20,307 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, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-11-02 23:08:20,308 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-02 23:08:20,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-11-02 23:08:20,400 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-11-02 23:08:20,400 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-02 23:08:20,405 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-11-02 23:08:20,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2021-11-02 23:08:20,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2021-11-02 23:08:20,440 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-11-02 23:08:20,440 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-02 23:08:20,440 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 23:08:20,441 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:08:20,442 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 23:08:20,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:08:20,449 INFO L85 PathProgramCache]: Analyzing trace with hash -291660010, now seen corresponding path program 1 times [2021-11-02 23:08:20,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:08:20,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659592625] [2021-11-02 23:08:20,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:08:20,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:08:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:08:21,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:21,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:08:21,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659592625] [2021-11-02 23:08:21,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659592625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:08:21,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:08:21,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 23:08:21,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210029633] [2021-11-02 23:08:21,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:08:21,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:08:21,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:08:21,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:08:21,211 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 84 [2021-11-02 23:08:21,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2021-11-02 23:08:21,217 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 23:08:21,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 84 [2021-11-02 23:08:21,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 23:08:21,424 INFO L129 PetriNetUnfolder]: 24/146 cut-off events. [2021-11-02 23:08:21,425 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-02 23:08:21,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 146 events. 24/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 440 event pairs, 5 based on Foata normal form. 6/149 useless extension candidates. Maximal degree in co-relation 186. Up to 31 conditions per place. [2021-11-02 23:08:21,430 INFO L132 encePairwiseOnDemand]: 76/84 looper letters, 8 selfloop transitions, 3 changer transitions 19/89 dead transitions. [2021-11-02 23:08:21,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 89 transitions, 247 flow [2021-11-02 23:08:21,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 23:08:21,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-02 23:08:21,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 673 transitions. [2021-11-02 23:08:21,454 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8902116402116402 [2021-11-02 23:08:21,455 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 673 transitions. [2021-11-02 23:08:21,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 673 transitions. [2021-11-02 23:08:21,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 23:08:21,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 673 transitions. [2021-11-02 23:08:21,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.77777777777777) internal successors, (673), 9 states have internal predecessors, (673), 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) [2021-11-02 23:08:21,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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) [2021-11-02 23:08:21,485 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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) [2021-11-02 23:08:21,487 INFO L186 Difference]: Start difference. First operand has 78 places, 69 transitions, 147 flow. Second operand 9 states and 673 transitions. [2021-11-02 23:08:21,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 89 transitions, 247 flow [2021-11-02 23:08:21,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 89 transitions, 244 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-02 23:08:21,499 INFO L242 Difference]: Finished difference. Result has 90 places, 70 transitions, 185 flow [2021-11-02 23:08:21,502 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=185, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2021-11-02 23:08:21,503 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2021-11-02 23:08:21,504 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 185 flow [2021-11-02 23:08:21,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2021-11-02 23:08:21,505 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 23:08:21,505 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:08:21,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 23:08:21,506 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 23:08:21,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:08:21,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1187425577, now seen corresponding path program 1 times [2021-11-02 23:08:21,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:08:21,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613673213] [2021-11-02 23:08:21,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:08:21,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:08:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:08:21,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:21,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:08:21,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613673213] [2021-11-02 23:08:21,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613673213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:08:21,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:08:21,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 23:08:21,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819099371] [2021-11-02 23:08:21,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:08:21,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:08:21,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:08:21,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:08:21,823 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-11-02 23:08:21,826 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 70 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 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) [2021-11-02 23:08:21,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 23:08:21,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-11-02 23:08:21,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 23:08:22,174 INFO L129 PetriNetUnfolder]: 166/449 cut-off events. [2021-11-02 23:08:22,174 INFO L130 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2021-11-02 23:08:22,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 921 conditions, 449 events. 166/449 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2471 event pairs, 14 based on Foata normal form. 0/416 useless extension candidates. Maximal degree in co-relation 884. Up to 104 conditions per place. [2021-11-02 23:08:22,185 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 21 selfloop transitions, 15 changer transitions 5/100 dead transitions. [2021-11-02 23:08:22,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 100 transitions, 327 flow [2021-11-02 23:08:22,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 23:08:22,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-02 23:08:22,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 743 transitions. [2021-11-02 23:08:22,193 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8845238095238095 [2021-11-02 23:08:22,193 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 743 transitions. [2021-11-02 23:08:22,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 743 transitions. [2021-11-02 23:08:22,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 23:08:22,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 743 transitions. [2021-11-02 23:08:22,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.3) internal successors, (743), 10 states have internal predecessors, (743), 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) [2021-11-02 23:08:22,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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) [2021-11-02 23:08:22,205 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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) [2021-11-02 23:08:22,205 INFO L186 Difference]: Start difference. First operand has 90 places, 70 transitions, 185 flow. Second operand 10 states and 743 transitions. [2021-11-02 23:08:22,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 100 transitions, 327 flow [2021-11-02 23:08:22,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 100 transitions, 318 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-11-02 23:08:22,216 INFO L242 Difference]: Finished difference. Result has 95 places, 83 transitions, 285 flow [2021-11-02 23:08:22,217 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=285, PETRI_PLACES=95, PETRI_TRANSITIONS=83} [2021-11-02 23:08:22,217 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 17 predicate places. [2021-11-02 23:08:22,218 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 83 transitions, 285 flow [2021-11-02 23:08:22,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 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) [2021-11-02 23:08:22,219 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 23:08:22,219 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:08:22,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 23:08:22,220 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 23:08:22,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:08:22,221 INFO L85 PathProgramCache]: Analyzing trace with hash 954058388, now seen corresponding path program 1 times [2021-11-02 23:08:22,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:08:22,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550611323] [2021-11-02 23:08:22,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:08:22,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:08:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:08:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:22,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:08:22,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550611323] [2021-11-02 23:08:22,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550611323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:08:22,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:08:22,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 23:08:22,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432638113] [2021-11-02 23:08:22,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 23:08:22,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:08:22,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 23:08:22,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:08:22,404 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-11-02 23:08:22,406 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 83 transitions, 285 flow. Second operand has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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) [2021-11-02 23:08:22,406 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 23:08:22,406 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-11-02 23:08:22,406 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 23:08:22,773 INFO L129 PetriNetUnfolder]: 146/418 cut-off events. [2021-11-02 23:08:22,774 INFO L130 PetriNetUnfolder]: For 862/916 co-relation queries the response was YES. [2021-11-02 23:08:22,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1365 conditions, 418 events. 146/418 cut-off events. For 862/916 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2301 event pairs, 4 based on Foata normal form. 24/424 useless extension candidates. Maximal degree in co-relation 1323. Up to 152 conditions per place. [2021-11-02 23:08:22,781 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 20 selfloop transitions, 28 changer transitions 11/118 dead transitions. [2021-11-02 23:08:22,781 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 118 transitions, 627 flow [2021-11-02 23:08:22,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 23:08:22,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-02 23:08:22,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 965 transitions. [2021-11-02 23:08:22,787 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8836996336996337 [2021-11-02 23:08:22,787 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 965 transitions. [2021-11-02 23:08:22,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 965 transitions. [2021-11-02 23:08:22,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 23:08:22,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 965 transitions. [2021-11-02 23:08:22,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.23076923076923) internal successors, (965), 13 states have internal predecessors, (965), 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) [2021-11-02 23:08:22,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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) [2021-11-02 23:08:22,800 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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) [2021-11-02 23:08:22,800 INFO L186 Difference]: Start difference. First operand has 95 places, 83 transitions, 285 flow. Second operand 13 states and 965 transitions. [2021-11-02 23:08:22,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 118 transitions, 627 flow [2021-11-02 23:08:22,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 118 transitions, 625 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-02 23:08:22,812 INFO L242 Difference]: Finished difference. Result has 112 places, 100 transitions, 509 flow [2021-11-02 23:08:22,812 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=509, PETRI_PLACES=112, PETRI_TRANSITIONS=100} [2021-11-02 23:08:22,813 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 34 predicate places. [2021-11-02 23:08:22,813 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 100 transitions, 509 flow [2021-11-02 23:08:22,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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) [2021-11-02 23:08:22,814 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 23:08:22,814 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:08:22,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 23:08:22,815 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 23:08:22,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:08:22,816 INFO L85 PathProgramCache]: Analyzing trace with hash 506752086, now seen corresponding path program 1 times [2021-11-02 23:08:22,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:08:22,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360914337] [2021-11-02 23:08:22,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:08:22,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:08:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:08:22,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:22,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:08:23,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360914337] [2021-11-02 23:08:23,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360914337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:08:23,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:08:23,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 23:08:23,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105318168] [2021-11-02 23:08:23,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 23:08:23,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:08:23,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 23:08:23,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:08:23,011 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-11-02 23:08:23,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 100 transitions, 509 flow. Second operand has 7 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 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) [2021-11-02 23:08:23,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 23:08:23,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-11-02 23:08:23,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 23:08:23,595 INFO L129 PetriNetUnfolder]: 243/1090 cut-off events. [2021-11-02 23:08:23,595 INFO L130 PetriNetUnfolder]: For 2626/2760 co-relation queries the response was YES. [2021-11-02 23:08:23,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3565 conditions, 1090 events. 243/1090 cut-off events. For 2626/2760 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 9674 event pairs, 0 based on Foata normal form. 15/1051 useless extension candidates. Maximal degree in co-relation 3512. Up to 244 conditions per place. [2021-11-02 23:08:23,616 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 26 selfloop transitions, 13 changer transitions 29/151 dead transitions. [2021-11-02 23:08:23,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 151 transitions, 865 flow [2021-11-02 23:08:23,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 23:08:23,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-02 23:08:23,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 976 transitions. [2021-11-02 23:08:23,622 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8299319727891157 [2021-11-02 23:08:23,622 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 976 transitions. [2021-11-02 23:08:23,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 976 transitions. [2021-11-02 23:08:23,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 23:08:23,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 976 transitions. [2021-11-02 23:08:23,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 69.71428571428571) internal successors, (976), 14 states have internal predecessors, (976), 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) [2021-11-02 23:08:23,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 84.0) internal successors, (1260), 15 states have internal predecessors, (1260), 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) [2021-11-02 23:08:23,633 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 84.0) internal successors, (1260), 15 states have internal predecessors, (1260), 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) [2021-11-02 23:08:23,634 INFO L186 Difference]: Start difference. First operand has 112 places, 100 transitions, 509 flow. Second operand 14 states and 976 transitions. [2021-11-02 23:08:23,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 151 transitions, 865 flow [2021-11-02 23:08:23,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 151 transitions, 805 flow, removed 23 selfloop flow, removed 4 redundant places. [2021-11-02 23:08:23,703 INFO L242 Difference]: Finished difference. Result has 133 places, 111 transitions, 603 flow [2021-11-02 23:08:23,704 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=603, PETRI_PLACES=133, PETRI_TRANSITIONS=111} [2021-11-02 23:08:23,704 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 55 predicate places. [2021-11-02 23:08:23,704 INFO L470 AbstractCegarLoop]: Abstraction has has 133 places, 111 transitions, 603 flow [2021-11-02 23:08:23,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 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) [2021-11-02 23:08:23,705 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 23:08:23,706 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:08:23,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 23:08:23,706 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 23:08:23,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:08:23,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1867086892, now seen corresponding path program 2 times [2021-11-02 23:08:23,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:08:23,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131059215] [2021-11-02 23:08:23,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:08:23,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:08:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:08:23,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:23,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:08:23,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131059215] [2021-11-02 23:08:23,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131059215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:08:23,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:08:23,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 23:08:23,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801203901] [2021-11-02 23:08:23,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 23:08:23,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:08:23,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 23:08:23,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:08:23,900 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-11-02 23:08:23,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 111 transitions, 603 flow. Second operand has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 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) [2021-11-02 23:08:23,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 23:08:23,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-11-02 23:08:23,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 23:08:24,440 INFO L129 PetriNetUnfolder]: 296/1007 cut-off events. [2021-11-02 23:08:24,441 INFO L130 PetriNetUnfolder]: For 2388/2732 co-relation queries the response was YES. [2021-11-02 23:08:24,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3658 conditions, 1007 events. 296/1007 cut-off events. For 2388/2732 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8649 event pairs, 2 based on Foata normal form. 110/1049 useless extension candidates. Maximal degree in co-relation 3621. Up to 150 conditions per place. [2021-11-02 23:08:24,460 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 16 selfloop transitions, 32 changer transitions 19/137 dead transitions. [2021-11-02 23:08:24,462 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 137 transitions, 911 flow [2021-11-02 23:08:24,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 23:08:24,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-02 23:08:24,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1172 transitions. [2021-11-02 23:08:24,468 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8720238095238095 [2021-11-02 23:08:24,468 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1172 transitions. [2021-11-02 23:08:24,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1172 transitions. [2021-11-02 23:08:24,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 23:08:24,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1172 transitions. [2021-11-02 23:08:24,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 73.25) internal successors, (1172), 16 states have internal predecessors, (1172), 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) [2021-11-02 23:08:24,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 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) [2021-11-02 23:08:24,487 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 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) [2021-11-02 23:08:24,487 INFO L186 Difference]: Start difference. First operand has 133 places, 111 transitions, 603 flow. Second operand 16 states and 1172 transitions. [2021-11-02 23:08:24,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 137 transitions, 911 flow [2021-11-02 23:08:24,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 137 transitions, 833 flow, removed 39 selfloop flow, removed 12 redundant places. [2021-11-02 23:08:24,517 INFO L242 Difference]: Finished difference. Result has 134 places, 112 transitions, 631 flow [2021-11-02 23:08:24,518 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=631, PETRI_PLACES=134, PETRI_TRANSITIONS=112} [2021-11-02 23:08:24,518 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 56 predicate places. [2021-11-02 23:08:24,518 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 112 transitions, 631 flow [2021-11-02 23:08:24,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 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) [2021-11-02 23:08:24,519 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 23:08:24,520 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:08:24,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 23:08:24,520 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 23:08:24,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:08:24,521 INFO L85 PathProgramCache]: Analyzing trace with hash 894446752, now seen corresponding path program 1 times [2021-11-02 23:08:24,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:08:24,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851477544] [2021-11-02 23:08:24,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:08:24,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:08:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:08:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:24,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:08:24,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851477544] [2021-11-02 23:08:24,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851477544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:08:24,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:08:24,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 23:08:24,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821414246] [2021-11-02 23:08:24,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:08:24,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:08:24,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:08:24,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:08:24,731 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 84 [2021-11-02 23:08:24,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 112 transitions, 631 flow. Second operand has 6 states, 6 states have (on average 72.5) internal successors, (435), 6 states have internal predecessors, (435), 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) [2021-11-02 23:08:24,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 23:08:24,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 84 [2021-11-02 23:08:24,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 23:08:25,031 INFO L129 PetriNetUnfolder]: 220/1114 cut-off events. [2021-11-02 23:08:25,031 INFO L130 PetriNetUnfolder]: For 3268/3367 co-relation queries the response was YES. [2021-11-02 23:08:25,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3777 conditions, 1114 events. 220/1114 cut-off events. For 3268/3367 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10975 event pairs, 2 based on Foata normal form. 1/1054 useless extension candidates. Maximal degree in co-relation 3717. Up to 173 conditions per place. [2021-11-02 23:08:25,050 INFO L132 encePairwiseOnDemand]: 78/84 looper letters, 8 selfloop transitions, 5 changer transitions 10/116 dead transitions. [2021-11-02 23:08:25,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 116 transitions, 685 flow [2021-11-02 23:08:25,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:08:25,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-02 23:08:25,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 441 transitions. [2021-11-02 23:08:25,053 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-11-02 23:08:25,054 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 441 transitions. [2021-11-02 23:08:25,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 441 transitions. [2021-11-02 23:08:25,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 23:08:25,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 441 transitions. [2021-11-02 23:08:25,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 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) [2021-11-02 23:08:25,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 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) [2021-11-02 23:08:25,063 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 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) [2021-11-02 23:08:25,063 INFO L186 Difference]: Start difference. First operand has 134 places, 112 transitions, 631 flow. Second operand 6 states and 441 transitions. [2021-11-02 23:08:25,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 116 transitions, 685 flow [2021-11-02 23:08:25,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 116 transitions, 588 flow, removed 15 selfloop flow, removed 15 redundant places. [2021-11-02 23:08:25,121 INFO L242 Difference]: Finished difference. Result has 125 places, 106 transitions, 518 flow [2021-11-02 23:08:25,121 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=518, PETRI_PLACES=125, PETRI_TRANSITIONS=106} [2021-11-02 23:08:25,122 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 47 predicate places. [2021-11-02 23:08:25,122 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 106 transitions, 518 flow [2021-11-02 23:08:25,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.5) internal successors, (435), 6 states have internal predecessors, (435), 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) [2021-11-02 23:08:25,124 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 23:08:25,124 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:08:25,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 23:08:25,125 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-02 23:08:25,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:08:25,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1625891424, now seen corresponding path program 2 times [2021-11-02 23:08:25,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:08:25,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070433672] [2021-11-02 23:08:25,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:08:25,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:08:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:08:25,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:25,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:08:25,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070433672] [2021-11-02 23:08:25,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070433672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:08:25,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:08:25,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 23:08:25,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737175637] [2021-11-02 23:08:25,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 23:08:25,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:08:25,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 23:08:25,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:08:25,374 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-11-02 23:08:25,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 106 transitions, 518 flow. Second operand has 7 states, 7 states have (on average 67.14285714285714) internal successors, (470), 7 states have internal predecessors, (470), 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) [2021-11-02 23:08:25,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 23:08:25,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-11-02 23:08:25,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 23:08:25,600 INFO L129 PetriNetUnfolder]: 120/612 cut-off events. [2021-11-02 23:08:25,601 INFO L130 PetriNetUnfolder]: For 885/899 co-relation queries the response was YES. [2021-11-02 23:08:25,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1737 conditions, 612 events. 120/612 cut-off events. For 885/899 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5005 event pairs, 0 based on Foata normal form. 3/583 useless extension candidates. Maximal degree in co-relation 1714. Up to 75 conditions per place. [2021-11-02 23:08:25,608 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 0 selfloop transitions, 0 changer transitions 112/112 dead transitions. [2021-11-02 23:08:25,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 112 transitions, 617 flow [2021-11-02 23:08:25,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 23:08:25,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-02 23:08:25,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 543 transitions. [2021-11-02 23:08:25,612 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8080357142857143 [2021-11-02 23:08:25,612 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 543 transitions. [2021-11-02 23:08:25,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 543 transitions. [2021-11-02 23:08:25,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 23:08:25,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 543 transitions. [2021-11-02 23:08:25,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 67.875) internal successors, (543), 8 states have internal predecessors, (543), 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) [2021-11-02 23:08:25,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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) [2021-11-02 23:08:25,620 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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) [2021-11-02 23:08:25,620 INFO L186 Difference]: Start difference. First operand has 125 places, 106 transitions, 518 flow. Second operand 8 states and 543 transitions. [2021-11-02 23:08:25,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 112 transitions, 617 flow [2021-11-02 23:08:25,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 112 transitions, 581 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-11-02 23:08:25,640 INFO L242 Difference]: Finished difference. Result has 121 places, 0 transitions, 0 flow [2021-11-02 23:08:25,640 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=121, PETRI_TRANSITIONS=0} [2021-11-02 23:08:25,641 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 43 predicate places. [2021-11-02 23:08:25,641 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 0 transitions, 0 flow [2021-11-02 23:08:25,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.14285714285714) internal successors, (470), 7 states have internal predecessors, (470), 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) [2021-11-02 23:08:25,645 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 23:08:25,646 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-02 23:08:25,646 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-02 23:08:25,646 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-11-02 23:08:25,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 23:08:25,651 INFO L731 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2021-11-02 23:08:25,658 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-02 23:08:25,658 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 23:08:25,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 11:08:25 BasicIcfg [2021-11-02 23:08:25,662 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 23:08:25,663 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 23:08:25,663 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 23:08:25,663 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 23:08:25,664 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:08:20" (3/4) ... [2021-11-02 23:08:25,668 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-02 23:08:25,676 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-11-02 23:08:25,676 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-11-02 23:08:25,677 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-11-02 23:08:25,685 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-11-02 23:08:25,685 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-02 23:08:25,686 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 23:08:25,686 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 23:08:25,755 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378f549a-d59e-48ba-930c-0c375b3343fd/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 23:08:25,755 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 23:08:25,758 INFO L168 Benchmark]: Toolchain (without parser) took 7206.08 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 55.8 MB in the beginning and 64.0 MB in the end (delta: -8.2 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.1 GB. [2021-11-02 23:08:25,761 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 92.3 MB. Free memory was 61.4 MB in the beginning and 61.3 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:08:25,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 752.87 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 55.6 MB in the beginning and 76.6 MB in the end (delta: -20.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 23:08:25,763 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.81 ms. Allocated memory is still 111.1 MB. Free memory was 76.6 MB in the beginning and 74.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 23:08:25,764 INFO L168 Benchmark]: Boogie Preprocessor took 48.80 ms. Allocated memory is still 111.1 MB. Free memory was 74.5 MB in the beginning and 73.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:08:25,764 INFO L168 Benchmark]: RCFGBuilder took 674.30 ms. Allocated memory is still 111.1 MB. Free memory was 73.2 MB in the beginning and 61.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-02 23:08:25,765 INFO L168 Benchmark]: TraceAbstraction took 5528.73 ms. Allocated memory was 111.1 MB in the beginning and 136.3 MB in the end (delta: 25.2 MB). Free memory was 60.4 MB in the beginning and 67.1 MB in the end (delta: -6.7 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. [2021-11-02 23:08:25,765 INFO L168 Benchmark]: Witness Printer took 92.72 ms. Allocated memory is still 136.3 MB. Free memory was 67.1 MB in the beginning and 64.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 23:08:25,771 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 92.3 MB. Free memory was 61.4 MB in the beginning and 61.3 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 752.87 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 55.6 MB in the beginning and 76.6 MB in the end (delta: -20.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 100.81 ms. Allocated memory is still 111.1 MB. Free memory was 76.6 MB in the beginning and 74.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.80 ms. Allocated memory is still 111.1 MB. Free memory was 74.5 MB in the beginning and 73.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 674.30 ms. Allocated memory is still 111.1 MB. Free memory was 73.2 MB in the beginning and 61.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5528.73 ms. Allocated memory was 111.1 MB in the beginning and 136.3 MB in the end (delta: 25.2 MB). Free memory was 60.4 MB in the beginning and 67.1 MB in the end (delta: -6.7 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. * Witness Printer took 92.72 ms. Allocated memory is still 136.3 MB. Free memory was 67.1 MB in the beginning and 64.0 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: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 204 SDslu, 258 SDs, 0 SdLazy, 302 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=631occurred in iteration=5, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 389 NumberOfCodeBlocks, 389 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 382 ConstructedInterpolants, 0 QuantifiedInterpolants, 1244 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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! [2021-11-02 23:08:25,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378f549a-d59e-48ba-930c-0c375b3343fd/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE