./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe022_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af736568-616f-48f0-a2f5-8a4bbaf849cb/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af736568-616f-48f0-a2f5-8a4bbaf849cb/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af736568-616f-48f0-a2f5-8a4bbaf849cb/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af736568-616f-48f0-a2f5-8a4bbaf849cb/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe022_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af736568-616f-48f0-a2f5-8a4bbaf849cb/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af736568-616f-48f0-a2f5-8a4bbaf849cb/bin/uautomizer-TMbwUNV5ro --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 cfc87f4ca115dcc389a4b05cbc106fd8bac1a9e17a58d50108d65580024dc2f5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:32:36,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:32:36,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:32:36,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:32:36,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:32:36,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:32:36,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:32:36,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:32:36,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:32:36,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:32:36,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:32:36,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:32:36,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:32:36,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:32:36,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:32:36,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:32:36,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:32:36,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:32:36,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:32:36,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:32:36,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:32:36,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:32:36,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:32:36,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:32:36,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:32:36,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:32:36,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:32:36,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:32:36,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:32:36,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:32:36,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:32:36,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:32:36,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:32:36,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:32:36,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:32:36,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:32:36,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:32:36,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:32:36,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:32:36,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:32:36,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:32:36,163 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af736568-616f-48f0-a2f5-8a4bbaf849cb/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:32:36,204 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:32:36,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:32:36,205 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:32:36,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:32:36,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:32:36,206 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:32:36,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:32:36,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:32:36,207 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:32:36,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:32:36,209 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:32:36,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:32:36,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:32:36,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:32:36,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:32:36,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:32:36,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:32:36,210 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:32:36,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:32:36,211 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:32:36,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:32:36,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:32:36,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:32:36,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:32:36,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:32:36,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:32:36,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:32:36,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:32:36,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:32:36,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:32:36,215 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:32:36,215 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:32:36,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:32:36,216 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_af736568-616f-48f0-a2f5-8a4bbaf849cb/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af736568-616f-48f0-a2f5-8a4bbaf849cb/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfc87f4ca115dcc389a4b05cbc106fd8bac1a9e17a58d50108d65580024dc2f5 [2022-11-18 19:32:36,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:32:36,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:32:36,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:32:36,578 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:32:36,579 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:32:36,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af736568-616f-48f0-a2f5-8a4bbaf849cb/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-wmm/safe022_tso.i [2022-11-18 19:32:36,666 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af736568-616f-48f0-a2f5-8a4bbaf849cb/bin/uautomizer-TMbwUNV5ro/data/b47da2017/06be494c1eb247ff8b1c92f08340401c/FLAG219f7ac74 [2022-11-18 19:32:37,289 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:32:37,290 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af736568-616f-48f0-a2f5-8a4bbaf849cb/sv-benchmarks/c/pthread-wmm/safe022_tso.i [2022-11-18 19:32:37,317 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af736568-616f-48f0-a2f5-8a4bbaf849cb/bin/uautomizer-TMbwUNV5ro/data/b47da2017/06be494c1eb247ff8b1c92f08340401c/FLAG219f7ac74 [2022-11-18 19:32:37,564 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af736568-616f-48f0-a2f5-8a4bbaf849cb/bin/uautomizer-TMbwUNV5ro/data/b47da2017/06be494c1eb247ff8b1c92f08340401c [2022-11-18 19:32:37,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:32:37,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:32:37,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:32:37,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:32:37,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:32:37,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:32:37" (1/1) ... [2022-11-18 19:32:37,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2718a527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:37, skipping insertion in model container [2022-11-18 19:32:37,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:32:37" (1/1) ... [2022-11-18 19:32:37,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:32:37,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:32:37,870 WARN L234 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_af736568-616f-48f0-a2f5-8a4bbaf849cb/sv-benchmarks/c/pthread-wmm/safe022_tso.i[945,958] [2022-11-18 19:32:38,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:32:38,129 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:32:38,143 WARN L234 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_af736568-616f-48f0-a2f5-8a4bbaf849cb/sv-benchmarks/c/pthread-wmm/safe022_tso.i[945,958] [2022-11-18 19:32:38,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:32:38,239 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:32:38,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:38 WrapperNode [2022-11-18 19:32:38,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:32:38,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:32:38,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:32:38,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:32:38,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:38" (1/1) ... [2022-11-18 19:32:38,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:38" (1/1) ... [2022-11-18 19:32:38,310 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2022-11-18 19:32:38,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:32:38,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:32:38,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:32:38,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:32:38,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:38" (1/1) ... [2022-11-18 19:32:38,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:38" (1/1) ... [2022-11-18 19:32:38,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:38" (1/1) ... [2022-11-18 19:32:38,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:38" (1/1) ... [2022-11-18 19:32:38,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:38" (1/1) ... [2022-11-18 19:32:38,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:38" (1/1) ... [2022-11-18 19:32:38,359 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:38" (1/1) ... [2022-11-18 19:32:38,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:38" (1/1) ... [2022-11-18 19:32:38,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:32:38,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:32:38,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:32:38,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:32:38,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:38" (1/1) ... [2022-11-18 19:32:38,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:32:38,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af736568-616f-48f0-a2f5-8a4bbaf849cb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:38,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af736568-616f-48f0-a2f5-8a4bbaf849cb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:38,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af736568-616f-48f0-a2f5-8a4bbaf849cb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:32:38,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:32:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 19:32:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:32:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:32:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:32:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-18 19:32:38,466 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-18 19:32:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-18 19:32:38,467 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-18 19:32:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:32:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 19:32:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:32:38,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:32:38,469 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:32:38,647 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:32:38,660 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:32:38,869 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:32:38,876 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:32:38,876 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 19:32:38,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:32:38 BoogieIcfgContainer [2022-11-18 19:32:38,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:32:38,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:32:38,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:32:38,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:32:38,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:32:37" (1/3) ... [2022-11-18 19:32:38,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a71ad5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:32:38, skipping insertion in model container [2022-11-18 19:32:38,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:38" (2/3) ... [2022-11-18 19:32:38,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a71ad5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:32:38, skipping insertion in model container [2022-11-18 19:32:38,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:32:38" (3/3) ... [2022-11-18 19:32:38,898 INFO L112 eAbstractionObserver]: Analyzing ICFG safe022_tso.i [2022-11-18 19:32:38,910 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:32:38,922 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:32:38,922 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:32:38,922 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:32:39,000 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 19:32:39,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 75 transitions, 160 flow [2022-11-18 19:32:39,121 INFO L130 PetriNetUnfolder]: 2/73 cut-off events. [2022-11-18 19:32:39,122 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:32:39,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2022-11-18 19:32:39,141 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 75 transitions, 160 flow [2022-11-18 19:32:39,147 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 61 transitions, 128 flow [2022-11-18 19:32:39,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:32:39,183 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6933b844, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:32:39,183 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-18 19:32:39,233 INFO L130 PetriNetUnfolder]: 1/60 cut-off events. [2022-11-18 19:32:39,233 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:32:39,234 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:39,235 INFO L209 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] [2022-11-18 19:32:39,236 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:32:39,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:39,243 INFO L85 PathProgramCache]: Analyzing trace with hash 949320548, now seen corresponding path program 1 times [2022-11-18 19:32:39,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:39,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807836965] [2022-11-18 19:32:39,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:39,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:40,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:40,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807836965] [2022-11-18 19:32:40,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807836965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:40,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:40,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:32:40,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598812256] [2022-11-18 19:32:40,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:40,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:32:40,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:40,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:32:40,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:32:40,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2022-11-18 19:32:40,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 62.5) internal successors, (375), 6 states have internal predecessors, (375), 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) [2022-11-18 19:32:40,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:40,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2022-11-18 19:32:40,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:40,394 INFO L130 PetriNetUnfolder]: 3/76 cut-off events. [2022-11-18 19:32:40,394 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 19:32:40,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 76 events. 3/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 4/79 useless extension candidates. Maximal degree in co-relation 72. Up to 8 conditions per place. [2022-11-18 19:32:40,396 INFO L137 encePairwiseOnDemand]: 68/75 looper letters, 8 selfloop transitions, 2 changer transitions 11/70 dead transitions. [2022-11-18 19:32:40,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 186 flow [2022-11-18 19:32:40,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:32:40,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:32:40,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 573 transitions. [2022-11-18 19:32:40,419 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8488888888888889 [2022-11-18 19:32:40,420 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 573 transitions. [2022-11-18 19:32:40,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 573 transitions. [2022-11-18 19:32:40,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:40,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 573 transitions. [2022-11-18 19:32:40,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 63.666666666666664) internal successors, (573), 9 states have internal predecessors, (573), 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) [2022-11-18 19:32:40,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 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) [2022-11-18 19:32:40,445 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 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) [2022-11-18 19:32:40,447 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 128 flow. Second operand 9 states and 573 transitions. [2022-11-18 19:32:40,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 186 flow [2022-11-18 19:32:40,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:32:40,460 INFO L231 Difference]: Finished difference. Result has 80 places, 59 transitions, 142 flow [2022-11-18 19:32:40,462 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=142, PETRI_PLACES=80, PETRI_TRANSITIONS=59} [2022-11-18 19:32:40,468 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2022-11-18 19:32:40,468 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 59 transitions, 142 flow [2022-11-18 19:32:40,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.5) internal successors, (375), 6 states have internal predecessors, (375), 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) [2022-11-18 19:32:40,470 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:40,470 INFO L209 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] [2022-11-18 19:32:40,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:32:40,470 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:32:40,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:40,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1332789053, now seen corresponding path program 1 times [2022-11-18 19:32:40,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:40,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824685026] [2022-11-18 19:32:40,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:40,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:40,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:40,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824685026] [2022-11-18 19:32:40,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824685026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:40,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:40,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:32:40,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216377269] [2022-11-18 19:32:40,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:40,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:32:40,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:40,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:32:40,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:32:40,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 75 [2022-11-18 19:32:40,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 59 transitions, 142 flow. Second operand has 7 states, 7 states have (on average 60.57142857142857) internal successors, (424), 7 states have internal predecessors, (424), 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) [2022-11-18 19:32:40,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:40,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 75 [2022-11-18 19:32:40,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:40,985 INFO L130 PetriNetUnfolder]: 5/87 cut-off events. [2022-11-18 19:32:40,985 INFO L131 PetriNetUnfolder]: For 23/30 co-relation queries the response was YES. [2022-11-18 19:32:40,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 87 events. 5/87 cut-off events. For 23/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 133 event pairs, 0 based on Foata normal form. 2/89 useless extension candidates. Maximal degree in co-relation 138. Up to 8 conditions per place. [2022-11-18 19:32:40,987 INFO L137 encePairwiseOnDemand]: 67/75 looper letters, 9 selfloop transitions, 4 changer transitions 12/72 dead transitions. [2022-11-18 19:32:40,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 72 transitions, 243 flow [2022-11-18 19:32:40,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:32:40,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 19:32:40,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 617 transitions. [2022-11-18 19:32:40,990 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8226666666666667 [2022-11-18 19:32:40,990 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 617 transitions. [2022-11-18 19:32:40,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 617 transitions. [2022-11-18 19:32:40,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:40,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 617 transitions. [2022-11-18 19:32:40,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 61.7) internal successors, (617), 10 states have internal predecessors, (617), 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) [2022-11-18 19:32:40,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 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) [2022-11-18 19:32:40,995 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 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) [2022-11-18 19:32:40,995 INFO L175 Difference]: Start difference. First operand has 80 places, 59 transitions, 142 flow. Second operand 10 states and 617 transitions. [2022-11-18 19:32:40,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 72 transitions, 243 flow [2022-11-18 19:32:40,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 72 transitions, 209 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-11-18 19:32:40,999 INFO L231 Difference]: Finished difference. Result has 82 places, 59 transitions, 156 flow [2022-11-18 19:32:41,000 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=156, PETRI_PLACES=82, PETRI_TRANSITIONS=59} [2022-11-18 19:32:41,000 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2022-11-18 19:32:41,001 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 59 transitions, 156 flow [2022-11-18 19:32:41,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.57142857142857) internal successors, (424), 7 states have internal predecessors, (424), 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) [2022-11-18 19:32:41,001 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:41,001 INFO L209 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] [2022-11-18 19:32:41,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:32:41,002 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:32:41,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:41,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1033545332, now seen corresponding path program 1 times [2022-11-18 19:32:41,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:41,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145881307] [2022-11-18 19:32:41,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:41,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:41,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:41,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:41,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145881307] [2022-11-18 19:32:41,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145881307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:41,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:41,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:32:41,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596335539] [2022-11-18 19:32:41,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:41,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:32:41,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:41,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:32:41,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:32:41,230 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 75 [2022-11-18 19:32:41,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 59 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 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) [2022-11-18 19:32:41,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:41,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 75 [2022-11-18 19:32:41,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:41,391 INFO L130 PetriNetUnfolder]: 25/148 cut-off events. [2022-11-18 19:32:41,391 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-18 19:32:41,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 148 events. 25/148 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 452 event pairs, 0 based on Foata normal form. 4/151 useless extension candidates. Maximal degree in co-relation 244. Up to 26 conditions per place. [2022-11-18 19:32:41,393 INFO L137 encePairwiseOnDemand]: 67/75 looper letters, 11 selfloop transitions, 5 changer transitions 15/79 dead transitions. [2022-11-18 19:32:41,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 260 flow [2022-11-18 19:32:41,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:32:41,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:32:41,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 573 transitions. [2022-11-18 19:32:41,395 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8488888888888889 [2022-11-18 19:32:41,396 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 573 transitions. [2022-11-18 19:32:41,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 573 transitions. [2022-11-18 19:32:41,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:41,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 573 transitions. [2022-11-18 19:32:41,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 63.666666666666664) internal successors, (573), 9 states have internal predecessors, (573), 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) [2022-11-18 19:32:41,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 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) [2022-11-18 19:32:41,400 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 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) [2022-11-18 19:32:41,401 INFO L175 Difference]: Start difference. First operand has 82 places, 59 transitions, 156 flow. Second operand 9 states and 573 transitions. [2022-11-18 19:32:41,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 260 flow [2022-11-18 19:32:41,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 79 transitions, 234 flow, removed 8 selfloop flow, removed 10 redundant places. [2022-11-18 19:32:41,404 INFO L231 Difference]: Finished difference. Result has 80 places, 61 transitions, 174 flow [2022-11-18 19:32:41,404 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=174, PETRI_PLACES=80, PETRI_TRANSITIONS=61} [2022-11-18 19:32:41,405 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2022-11-18 19:32:41,405 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 61 transitions, 174 flow [2022-11-18 19:32:41,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 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) [2022-11-18 19:32:41,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:41,406 INFO L209 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] [2022-11-18 19:32:41,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:32:41,407 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:32:41,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:41,407 INFO L85 PathProgramCache]: Analyzing trace with hash -998308607, now seen corresponding path program 1 times [2022-11-18 19:32:41,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:41,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337002758] [2022-11-18 19:32:41,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:41,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:41,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:41,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:41,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337002758] [2022-11-18 19:32:41,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337002758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:41,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:41,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:32:41,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980659540] [2022-11-18 19:32:41,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:41,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:32:41,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:41,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:32:41,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:32:41,616 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 75 [2022-11-18 19:32:41,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 61 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 61.42857142857143) internal successors, (430), 7 states have internal predecessors, (430), 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) [2022-11-18 19:32:41,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:41,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 75 [2022-11-18 19:32:41,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:41,757 INFO L130 PetriNetUnfolder]: 9/93 cut-off events. [2022-11-18 19:32:41,758 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2022-11-18 19:32:41,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 93 events. 9/93 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 140 event pairs, 0 based on Foata normal form. 3/96 useless extension candidates. Maximal degree in co-relation 187. Up to 18 conditions per place. [2022-11-18 19:32:41,759 INFO L137 encePairwiseOnDemand]: 67/75 looper letters, 7 selfloop transitions, 7 changer transitions 11/73 dead transitions. [2022-11-18 19:32:41,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 73 transitions, 293 flow [2022-11-18 19:32:41,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:32:41,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 19:32:41,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 627 transitions. [2022-11-18 19:32:41,763 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.836 [2022-11-18 19:32:41,763 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 627 transitions. [2022-11-18 19:32:41,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 627 transitions. [2022-11-18 19:32:41,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:41,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 627 transitions. [2022-11-18 19:32:41,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 62.7) internal successors, (627), 10 states have internal predecessors, (627), 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) [2022-11-18 19:32:41,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 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) [2022-11-18 19:32:41,768 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 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) [2022-11-18 19:32:41,768 INFO L175 Difference]: Start difference. First operand has 80 places, 61 transitions, 174 flow. Second operand 10 states and 627 transitions. [2022-11-18 19:32:41,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 73 transitions, 293 flow [2022-11-18 19:32:41,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 254 flow, removed 14 selfloop flow, removed 6 redundant places. [2022-11-18 19:32:41,772 INFO L231 Difference]: Finished difference. Result has 85 places, 61 transitions, 186 flow [2022-11-18 19:32:41,772 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=186, PETRI_PLACES=85, PETRI_TRANSITIONS=61} [2022-11-18 19:32:41,773 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 18 predicate places. [2022-11-18 19:32:41,773 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 61 transitions, 186 flow [2022-11-18 19:32:41,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 61.42857142857143) internal successors, (430), 7 states have internal predecessors, (430), 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) [2022-11-18 19:32:41,774 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:41,774 INFO L209 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] [2022-11-18 19:32:41,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:32:41,775 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:32:41,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:41,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1262599132, now seen corresponding path program 1 times [2022-11-18 19:32:41,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:41,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144827027] [2022-11-18 19:32:41,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:41,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:42,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:42,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:42,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144827027] [2022-11-18 19:32:42,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144827027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:42,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:42,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:32:42,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596077179] [2022-11-18 19:32:42,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:42,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:32:42,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:42,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:32:42,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:32:42,011 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 75 [2022-11-18 19:32:42,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 61 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 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) [2022-11-18 19:32:42,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:42,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 75 [2022-11-18 19:32:42,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:42,129 INFO L130 PetriNetUnfolder]: 2/67 cut-off events. [2022-11-18 19:32:42,129 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-18 19:32:42,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 67 events. 2/67 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 108. Up to 7 conditions per place. [2022-11-18 19:32:42,130 INFO L137 encePairwiseOnDemand]: 67/75 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2022-11-18 19:32:42,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 60 transitions, 214 flow [2022-11-18 19:32:42,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:32:42,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:32:42,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 471 transitions. [2022-11-18 19:32:42,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.785 [2022-11-18 19:32:42,132 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 471 transitions. [2022-11-18 19:32:42,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 471 transitions. [2022-11-18 19:32:42,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:42,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 471 transitions. [2022-11-18 19:32:42,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.875) internal successors, (471), 8 states have internal predecessors, (471), 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) [2022-11-18 19:32:42,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 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) [2022-11-18 19:32:42,136 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 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) [2022-11-18 19:32:42,136 INFO L175 Difference]: Start difference. First operand has 85 places, 61 transitions, 186 flow. Second operand 8 states and 471 transitions. [2022-11-18 19:32:42,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 60 transitions, 214 flow [2022-11-18 19:32:42,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 60 transitions, 168 flow, removed 13 selfloop flow, removed 13 redundant places. [2022-11-18 19:32:42,140 INFO L231 Difference]: Finished difference. Result has 73 places, 0 transitions, 0 flow [2022-11-18 19:32:42,141 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=73, PETRI_TRANSITIONS=0} [2022-11-18 19:32:42,143 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2022-11-18 19:32:42,143 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 0 transitions, 0 flow [2022-11-18 19:32:42,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 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) [2022-11-18 19:32:42,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-18 19:32:42,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-18 19:32:42,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-18 19:32:42,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:32:42,148 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 19:32:42,153 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 19:32:42,153 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 19:32:42,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 07:32:42 BasicIcfg [2022-11-18 19:32:42,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 19:32:42,164 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 19:32:42,164 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 19:32:42,164 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 19:32:42,165 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:32:38" (3/4) ... [2022-11-18 19:32:42,168 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 19:32:42,174 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-18 19:32:42,175 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-18 19:32:42,181 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-18 19:32:42,181 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 19:32:42,181 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 19:32:42,181 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 19:32:42,226 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af736568-616f-48f0-a2f5-8a4bbaf849cb/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 19:32:42,227 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 19:32:42,228 INFO L158 Benchmark]: Toolchain (without parser) took 4659.33ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 61.3MB in the beginning and 105.5MB in the end (delta: -44.2MB). Peak memory consumption was 1.7MB. Max. memory is 16.1GB. [2022-11-18 19:32:42,230 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory was 69.2MB in the beginning and 69.2MB in the end (delta: 30.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:32:42,230 INFO L158 Benchmark]: CACSL2BoogieTranslator took 667.19ms. Allocated memory is still 96.5MB. Free memory was 61.1MB in the beginning and 61.1MB in the end (delta: 15.5kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 19:32:42,231 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.53ms. Allocated memory is still 96.5MB. Free memory was 61.1MB in the beginning and 59.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:32:42,231 INFO L158 Benchmark]: Boogie Preprocessor took 51.12ms. Allocated memory is still 96.5MB. Free memory was 59.0MB in the beginning and 57.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:32:42,231 INFO L158 Benchmark]: RCFGBuilder took 511.37ms. Allocated memory is still 96.5MB. Free memory was 57.8MB in the beginning and 45.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 19:32:42,232 INFO L158 Benchmark]: TraceAbstraction took 3281.96ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 44.8MB in the beginning and 108.7MB in the end (delta: -63.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:32:42,233 INFO L158 Benchmark]: Witness Printer took 62.72ms. Allocated memory is still 142.6MB. Free memory was 108.7MB in the beginning and 105.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:32:42,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory was 69.2MB in the beginning and 69.2MB in the end (delta: 30.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 667.19ms. Allocated memory is still 96.5MB. Free memory was 61.1MB in the beginning and 61.1MB in the end (delta: 15.5kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.53ms. Allocated memory is still 96.5MB. Free memory was 61.1MB in the beginning and 59.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.12ms. Allocated memory is still 96.5MB. Free memory was 59.0MB in the beginning and 57.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 511.37ms. Allocated memory is still 96.5MB. Free memory was 57.8MB in the beginning and 45.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3281.96ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 44.8MB in the beginning and 108.7MB in the end (delta: -63.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 62.72ms. Allocated memory is still 142.6MB. Free memory was 108.7MB in the beginning and 105.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 90 locations, 3 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: 3.1s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 113 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 113 mSDsluCounter, 135 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 102 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 189 IncrementalHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 33 mSDtfsCounter, 189 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred in iteration=4, InterpolantAutomatonStates: 46, 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, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 251 ConstructedInterpolants, 0 QuantifiedInterpolants, 769 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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! [2022-11-18 19:32:42,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af736568-616f-48f0-a2f5-8a4bbaf849cb/bin/uautomizer-TMbwUNV5ro/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