./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8 --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 dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 --- 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-e04fb08 [2022-11-16 12:50:22,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:50:22,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:50:22,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:50:22,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:50:22,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:50:22,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:50:22,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:50:22,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:50:22,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:50:22,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:50:22,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:50:22,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:50:22,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:50:22,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:50:22,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:50:22,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:50:22,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:50:22,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:50:22,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:50:22,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:50:22,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:50:22,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:50:22,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:50:22,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:50:22,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:50:22,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:50:22,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:50:22,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:50:22,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:50:22,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:50:22,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:50:22,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:50:22,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:50:22,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:50:22,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:50:22,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:50:22,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:50:22,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:50:22,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:50:22,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:50:22,235 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:50:22,287 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:50:22,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:50:22,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:50:22,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:50:22,290 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:50:22,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:50:22,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:50:22,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:50:22,292 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:50:22,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:50:22,293 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:50:22,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:50:22,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:50:22,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:50:22,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:50:22,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:50:22,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:50:22,295 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:50:22,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:50:22,295 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:50:22,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:50:22,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:50:22,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:50:22,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:50:22,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:50:22,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:50:22,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:50:22,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:50:22,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:50:22,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:50:22,300 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:50:22,300 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:50:22,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:50:22,301 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_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 [2022-11-16 12:50:22,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:50:22,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:50:22,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:50:22,667 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:50:22,668 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:50:22,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-11-16 12:50:22,734 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/data/84e157289/47e9809cd0d64de7a0b25eae5151139e/FLAG3440559ae [2022-11-16 12:50:23,358 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:50:23,359 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-11-16 12:50:23,381 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/data/84e157289/47e9809cd0d64de7a0b25eae5151139e/FLAG3440559ae [2022-11-16 12:50:23,571 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/data/84e157289/47e9809cd0d64de7a0b25eae5151139e [2022-11-16 12:50:23,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:50:23,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:50:23,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:50:23,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:50:23,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:50:23,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:50:23" (1/1) ... [2022-11-16 12:50:23,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e333028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:23, skipping insertion in model container [2022-11-16 12:50:23,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:50:23" (1/1) ... [2022-11-16 12:50:23,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:50:23,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:50:24,217 WARN L229 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_2dfd9615-5452-439b-aba4-0040b89e4231/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-11-16 12:50:24,240 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:50:24,241 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:50:24,242 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:50:24,243 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:50:24,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:50:24,301 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:50:24,368 WARN L229 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_2dfd9615-5452-439b-aba4-0040b89e4231/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-11-16 12:50:24,374 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:50:24,380 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:50:24,381 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:50:24,382 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:50:24,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:50:24,481 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:50:24,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:24 WrapperNode [2022-11-16 12:50:24,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:50:24,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:50:24,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:50:24,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:50:24,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:24" (1/1) ... [2022-11-16 12:50:24,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:24" (1/1) ... [2022-11-16 12:50:24,545 INFO L138 Inliner]: procedures = 278, calls = 51, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 221 [2022-11-16 12:50:24,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:50:24,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:50:24,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:50:24,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:50:24,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:24" (1/1) ... [2022-11-16 12:50:24,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:24" (1/1) ... [2022-11-16 12:50:24,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:24" (1/1) ... [2022-11-16 12:50:24,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:24" (1/1) ... [2022-11-16 12:50:24,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:24" (1/1) ... [2022-11-16 12:50:24,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:24" (1/1) ... [2022-11-16 12:50:24,623 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:24" (1/1) ... [2022-11-16 12:50:24,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:24" (1/1) ... [2022-11-16 12:50:24,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:50:24,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:50:24,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:50:24,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:50:24,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:24" (1/1) ... [2022-11-16 12:50:24,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:50:24,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:50:24,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:50:24,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:50:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:50:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:50:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:50:24,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:50:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:50:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:50:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:50:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:50:24,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:50:24,739 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 12:50:24,739 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 12:50:24,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:50:24,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:50:24,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:50:24,741 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:50:24,972 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:50:24,974 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:50:25,482 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:50:25,493 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:50:25,493 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-16 12:50:25,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:50:25 BoogieIcfgContainer [2022-11-16 12:50:25,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:50:25,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:50:25,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:50:25,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:50:25,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:50:23" (1/3) ... [2022-11-16 12:50:25,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc9aab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:50:25, skipping insertion in model container [2022-11-16 12:50:25,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:24" (2/3) ... [2022-11-16 12:50:25,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc9aab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:50:25, skipping insertion in model container [2022-11-16 12:50:25,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:50:25" (3/3) ... [2022-11-16 12:50:25,506 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2022-11-16 12:50:25,531 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:50:25,542 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:50:25,543 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:50:25,543 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:50:25,697 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 12:50:25,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 253 transitions, 514 flow [2022-11-16 12:50:25,851 INFO L130 PetriNetUnfolder]: 28/270 cut-off events. [2022-11-16 12:50:25,852 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-16 12:50:25,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 270 events. 28/270 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 404 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 152. Up to 4 conditions per place. [2022-11-16 12:50:25,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 253 transitions, 514 flow [2022-11-16 12:50:25,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 248 transitions, 501 flow [2022-11-16 12:50:25,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:50:25,887 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;@72d7b0e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:50:25,887 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-16 12:50:25,959 INFO L130 PetriNetUnfolder]: 10/179 cut-off events. [2022-11-16 12:50:25,960 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:50:25,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:25,962 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:25,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:50:25,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:25,969 INFO L85 PathProgramCache]: Analyzing trace with hash -883278119, now seen corresponding path program 1 times [2022-11-16 12:50:25,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:25,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354670641] [2022-11-16 12:50:25,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:25,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:50:26,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:26,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354670641] [2022-11-16 12:50:26,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354670641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:26,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:26,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:50:26,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857088675] [2022-11-16 12:50:26,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:26,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:50:26,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:26,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:50:26,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:50:26,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 253 [2022-11-16 12:50:26,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 248 transitions, 501 flow. Second operand has 2 states, 2 states have (on average 231.0) internal successors, (462), 2 states have internal predecessors, (462), 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) [2022-11-16 12:50:26,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:26,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 253 [2022-11-16 12:50:26,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:26,429 INFO L130 PetriNetUnfolder]: 5/242 cut-off events. [2022-11-16 12:50:26,430 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:50:26,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 242 events. 5/242 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 268 event pairs, 0 based on Foata normal form. 22/251 useless extension candidates. Maximal degree in co-relation 146. Up to 2 conditions per place. [2022-11-16 12:50:26,432 INFO L137 encePairwiseOnDemand]: 233/253 looper letters, 1 selfloop transitions, 0 changer transitions 2/227 dead transitions. [2022-11-16 12:50:26,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 227 transitions, 461 flow [2022-11-16 12:50:26,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:50:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:50:26,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 481 transitions. [2022-11-16 12:50:26,449 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.950592885375494 [2022-11-16 12:50:26,450 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 481 transitions. [2022-11-16 12:50:26,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 481 transitions. [2022-11-16 12:50:26,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:26,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 481 transitions. [2022-11-16 12:50:26,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 240.5) internal successors, (481), 2 states have internal predecessors, (481), 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) [2022-11-16 12:50:26,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 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) [2022-11-16 12:50:26,467 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 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) [2022-11-16 12:50:26,470 INFO L175 Difference]: Start difference. First operand has 226 places, 248 transitions, 501 flow. Second operand 2 states and 481 transitions. [2022-11-16 12:50:26,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 227 transitions, 461 flow [2022-11-16 12:50:26,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 227 transitions, 461 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:50:26,481 INFO L231 Difference]: Finished difference. Result has 226 places, 225 transitions, 455 flow [2022-11-16 12:50:26,484 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=455, PETRI_PLACES=226, PETRI_TRANSITIONS=225} [2022-11-16 12:50:26,488 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 0 predicate places. [2022-11-16 12:50:26,489 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 225 transitions, 455 flow [2022-11-16 12:50:26,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 231.0) internal successors, (462), 2 states have internal predecessors, (462), 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) [2022-11-16 12:50:26,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:26,490 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:26,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:50:26,491 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:50:26,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:26,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1491354982, now seen corresponding path program 1 times [2022-11-16 12:50:26,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:26,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737609336] [2022-11-16 12:50:26,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:26,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:26,738 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:50:26,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:26,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737609336] [2022-11-16 12:50:26,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737609336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:26,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:26,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:50:26,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68071673] [2022-11-16 12:50:26,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:26,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:50:26,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:26,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:50:26,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:50:26,745 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 253 [2022-11-16 12:50:26,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 225 transitions, 455 flow. Second operand has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 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) [2022-11-16 12:50:26,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:26,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 253 [2022-11-16 12:50:26,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:26,835 INFO L130 PetriNetUnfolder]: 6/290 cut-off events. [2022-11-16 12:50:26,835 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:50:26,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 290 events. 6/290 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 400 event pairs, 0 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 311. Up to 12 conditions per place. [2022-11-16 12:50:26,837 INFO L137 encePairwiseOnDemand]: 250/253 looper letters, 16 selfloop transitions, 2 changer transitions 0/232 dead transitions. [2022-11-16 12:50:26,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 232 transitions, 505 flow [2022-11-16 12:50:26,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:50:26,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:50:26,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 679 transitions. [2022-11-16 12:50:26,841 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8945981554677207 [2022-11-16 12:50:26,842 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 679 transitions. [2022-11-16 12:50:26,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 679 transitions. [2022-11-16 12:50:26,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:26,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 679 transitions. [2022-11-16 12:50:26,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 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) [2022-11-16 12:50:26,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-11-16 12:50:26,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-11-16 12:50:26,850 INFO L175 Difference]: Start difference. First operand has 226 places, 225 transitions, 455 flow. Second operand 3 states and 679 transitions. [2022-11-16 12:50:26,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 232 transitions, 505 flow [2022-11-16 12:50:26,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 232 transitions, 505 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:50:26,857 INFO L231 Difference]: Finished difference. Result has 227 places, 226 transitions, 467 flow [2022-11-16 12:50:26,858 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=467, PETRI_PLACES=227, PETRI_TRANSITIONS=226} [2022-11-16 12:50:26,859 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 1 predicate places. [2022-11-16 12:50:26,859 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 226 transitions, 467 flow [2022-11-16 12:50:26,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 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) [2022-11-16 12:50:26,860 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:26,861 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:26,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:50:26,861 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:50:26,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:26,862 INFO L85 PathProgramCache]: Analyzing trace with hash 80166467, now seen corresponding path program 1 times [2022-11-16 12:50:26,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:26,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031618524] [2022-11-16 12:50:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:26,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:27,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:50:27,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:27,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031618524] [2022-11-16 12:50:27,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031618524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:27,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:27,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:50:27,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134062652] [2022-11-16 12:50:27,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:27,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:50:27,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:27,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:50:27,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:50:27,017 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 253 [2022-11-16 12:50:27,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 226 transitions, 467 flow. Second operand has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 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) [2022-11-16 12:50:27,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:27,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 253 [2022-11-16 12:50:27,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:27,098 INFO L130 PetriNetUnfolder]: 6/362 cut-off events. [2022-11-16 12:50:27,098 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:50:27,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 362 events. 6/362 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 545 event pairs, 0 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 392. Up to 15 conditions per place. [2022-11-16 12:50:27,100 INFO L137 encePairwiseOnDemand]: 250/253 looper letters, 10 selfloop transitions, 2 changer transitions 0/230 dead transitions. [2022-11-16 12:50:27,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 230 transitions, 499 flow [2022-11-16 12:50:27,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:50:27,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:50:27,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2022-11-16 12:50:27,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8985507246376812 [2022-11-16 12:50:27,104 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2022-11-16 12:50:27,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2022-11-16 12:50:27,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:27,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2022-11-16 12:50:27,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 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) [2022-11-16 12:50:27,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-11-16 12:50:27,110 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-11-16 12:50:27,110 INFO L175 Difference]: Start difference. First operand has 227 places, 226 transitions, 467 flow. Second operand 3 states and 682 transitions. [2022-11-16 12:50:27,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 230 transitions, 499 flow [2022-11-16 12:50:27,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 230 transitions, 497 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:50:27,115 INFO L231 Difference]: Finished difference. Result has 229 places, 227 transitions, 477 flow [2022-11-16 12:50:27,116 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=229, PETRI_TRANSITIONS=227} [2022-11-16 12:50:27,117 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 3 predicate places. [2022-11-16 12:50:27,117 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 227 transitions, 477 flow [2022-11-16 12:50:27,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 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) [2022-11-16 12:50:27,118 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:27,119 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:27,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:50:27,119 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:50:27,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:27,120 INFO L85 PathProgramCache]: Analyzing trace with hash -692712292, now seen corresponding path program 1 times [2022-11-16 12:50:27,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:27,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97461932] [2022-11-16 12:50:27,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:27,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:27,159 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:50:27,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339423314] [2022-11-16 12:50:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:27,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:50:27,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:50:27,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:50:27,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:50:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:27,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:50:27,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:50:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:50:27,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:50:27,864 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:50:27,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:27,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97461932] [2022-11-16 12:50:27,880 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:50:27,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339423314] [2022-11-16 12:50:27,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339423314] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:50:27,881 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:50:27,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 12:50:27,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575648525] [2022-11-16 12:50:27,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:50:27,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:50:27,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:27,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:50:27,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:50:27,888 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 253 [2022-11-16 12:50:27,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 227 transitions, 477 flow. Second operand has 8 states, 8 states have (on average 224.0) internal successors, (1792), 8 states have internal predecessors, (1792), 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) [2022-11-16 12:50:27,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:27,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 253 [2022-11-16 12:50:27,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:28,125 INFO L130 PetriNetUnfolder]: 6/440 cut-off events. [2022-11-16 12:50:28,125 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-16 12:50:28,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 440 events. 6/440 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 478 event pairs, 0 based on Foata normal form. 4/435 useless extension candidates. Maximal degree in co-relation 497. Up to 10 conditions per place. [2022-11-16 12:50:28,128 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 11 selfloop transitions, 9 changer transitions 0/237 dead transitions. [2022-11-16 12:50:28,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 237 transitions, 539 flow [2022-11-16 12:50:28,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:50:28,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:50:28,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2020 transitions. [2022-11-16 12:50:28,136 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8871321914800175 [2022-11-16 12:50:28,137 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2020 transitions. [2022-11-16 12:50:28,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2020 transitions. [2022-11-16 12:50:28,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:28,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2020 transitions. [2022-11-16 12:50:28,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 224.44444444444446) internal successors, (2020), 9 states have internal predecessors, (2020), 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) [2022-11-16 12:50:28,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 253.0) internal successors, (2530), 10 states have internal predecessors, (2530), 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) [2022-11-16 12:50:28,153 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 253.0) internal successors, (2530), 10 states have internal predecessors, (2530), 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) [2022-11-16 12:50:28,153 INFO L175 Difference]: Start difference. First operand has 229 places, 227 transitions, 477 flow. Second operand 9 states and 2020 transitions. [2022-11-16 12:50:28,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 237 transitions, 539 flow [2022-11-16 12:50:28,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 237 transitions, 537 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:50:28,160 INFO L231 Difference]: Finished difference. Result has 239 places, 233 transitions, 525 flow [2022-11-16 12:50:28,161 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=525, PETRI_PLACES=239, PETRI_TRANSITIONS=233} [2022-11-16 12:50:28,162 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 13 predicate places. [2022-11-16 12:50:28,162 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 233 transitions, 525 flow [2022-11-16 12:50:28,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 224.0) internal successors, (1792), 8 states have internal predecessors, (1792), 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) [2022-11-16 12:50:28,164 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:28,165 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:28,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:50:28,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:50:28,371 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:50:28,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:28,372 INFO L85 PathProgramCache]: Analyzing trace with hash -5595908, now seen corresponding path program 2 times [2022-11-16 12:50:28,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:28,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035182746] [2022-11-16 12:50:28,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:28,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:28,449 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:50:28,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363345474] [2022-11-16 12:50:28,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:50:28,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:50:28,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:50:28,452 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:50:28,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:50:28,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:50:28,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:50:28,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:50:28,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:50:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 1 proven. 114 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:50:29,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:50:29,364 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 1 proven. 114 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:50:29,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:29,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035182746] [2022-11-16 12:50:29,365 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:50:29,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363345474] [2022-11-16 12:50:29,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363345474] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:50:29,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:50:29,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 12:50:29,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685757492] [2022-11-16 12:50:29,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:50:29,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:50:29,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:29,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:50:29,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:50:29,382 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 253 [2022-11-16 12:50:29,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 233 transitions, 525 flow. Second operand has 16 states, 16 states have (on average 224.25) internal successors, (3588), 16 states have internal predecessors, (3588), 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) [2022-11-16 12:50:29,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:29,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 253 [2022-11-16 12:50:29,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:29,837 INFO L130 PetriNetUnfolder]: 6/736 cut-off events. [2022-11-16 12:50:29,837 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-11-16 12:50:29,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 736 events. 6/736 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 478 event pairs, 0 based on Foata normal form. 8/735 useless extension candidates. Maximal degree in co-relation 927. Up to 22 conditions per place. [2022-11-16 12:50:29,844 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 19 selfloop transitions, 21 changer transitions 0/257 dead transitions. [2022-11-16 12:50:29,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 257 transitions, 713 flow [2022-11-16 12:50:29,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:50:29,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:50:29,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4706 transitions. [2022-11-16 12:50:29,855 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8857519292301901 [2022-11-16 12:50:29,855 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4706 transitions. [2022-11-16 12:50:29,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4706 transitions. [2022-11-16 12:50:29,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:29,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4706 transitions. [2022-11-16 12:50:29,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 224.0952380952381) internal successors, (4706), 21 states have internal predecessors, (4706), 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) [2022-11-16 12:50:29,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 253.0) internal successors, (5566), 22 states have internal predecessors, (5566), 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) [2022-11-16 12:50:29,885 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 253.0) internal successors, (5566), 22 states have internal predecessors, (5566), 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) [2022-11-16 12:50:29,885 INFO L175 Difference]: Start difference. First operand has 239 places, 233 transitions, 525 flow. Second operand 21 states and 4706 transitions. [2022-11-16 12:50:29,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 257 transitions, 713 flow [2022-11-16 12:50:29,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 257 transitions, 699 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-16 12:50:29,894 INFO L231 Difference]: Finished difference. Result has 263 places, 246 transitions, 649 flow [2022-11-16 12:50:29,895 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=649, PETRI_PLACES=263, PETRI_TRANSITIONS=246} [2022-11-16 12:50:29,898 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 37 predicate places. [2022-11-16 12:50:29,898 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 246 transitions, 649 flow [2022-11-16 12:50:29,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 224.25) internal successors, (3588), 16 states have internal predecessors, (3588), 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) [2022-11-16 12:50:29,900 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:29,900 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:29,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:50:30,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:50:30,107 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:50:30,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:30,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1761465788, now seen corresponding path program 3 times [2022-11-16 12:50:30,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:30,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10958155] [2022-11-16 12:50:30,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:30,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:30,194 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:50:30,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946493540] [2022-11-16 12:50:30,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:50:30,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:50:30,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:50:30,196 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:50:30,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:50:30,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:50:30,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:50:30,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:50:30,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:50:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2022-11-16 12:50:31,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:50:31,579 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2022-11-16 12:50:31,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:31,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10958155] [2022-11-16 12:50:31,580 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:50:31,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946493540] [2022-11-16 12:50:31,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946493540] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:50:31,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:50:31,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 12:50:31,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320500587] [2022-11-16 12:50:31,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:50:31,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:50:31,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:31,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:50:31,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:50:31,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 253 [2022-11-16 12:50:31,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 246 transitions, 649 flow. Second operand has 8 states, 8 states have (on average 221.75) internal successors, (1774), 8 states have internal predecessors, (1774), 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) [2022-11-16 12:50:31,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:31,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 253 [2022-11-16 12:50:31,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:32,077 INFO L130 PetriNetUnfolder]: 7/1012 cut-off events. [2022-11-16 12:50:32,078 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2022-11-16 12:50:32,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1348 conditions, 1012 events. 7/1012 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 164 event pairs, 0 based on Foata normal form. 2/1005 useless extension candidates. Maximal degree in co-relation 1334. Up to 33 conditions per place. [2022-11-16 12:50:32,081 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 20 selfloop transitions, 9 changer transitions 0/262 dead transitions. [2022-11-16 12:50:32,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 262 transitions, 741 flow [2022-11-16 12:50:32,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:50:32,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:50:32,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2002 transitions. [2022-11-16 12:50:32,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8792270531400966 [2022-11-16 12:50:32,086 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2002 transitions. [2022-11-16 12:50:32,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2002 transitions. [2022-11-16 12:50:32,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:32,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2002 transitions. [2022-11-16 12:50:32,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 222.44444444444446) internal successors, (2002), 9 states have internal predecessors, (2002), 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) [2022-11-16 12:50:32,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 253.0) internal successors, (2530), 10 states have internal predecessors, (2530), 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) [2022-11-16 12:50:32,098 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 253.0) internal successors, (2530), 10 states have internal predecessors, (2530), 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) [2022-11-16 12:50:32,098 INFO L175 Difference]: Start difference. First operand has 263 places, 246 transitions, 649 flow. Second operand 9 states and 2002 transitions. [2022-11-16 12:50:32,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 262 transitions, 741 flow [2022-11-16 12:50:32,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 262 transitions, 717 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-16 12:50:32,133 INFO L231 Difference]: Finished difference. Result has 268 places, 252 transitions, 675 flow [2022-11-16 12:50:32,134 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=675, PETRI_PLACES=268, PETRI_TRANSITIONS=252} [2022-11-16 12:50:32,135 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 42 predicate places. [2022-11-16 12:50:32,135 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 252 transitions, 675 flow [2022-11-16 12:50:32,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 221.75) internal successors, (1774), 8 states have internal predecessors, (1774), 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) [2022-11-16 12:50:32,136 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:32,136 INFO L209 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:32,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:50:32,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:50:32,343 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:50:32,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:32,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1175865988, now seen corresponding path program 4 times [2022-11-16 12:50:32,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:32,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652544402] [2022-11-16 12:50:32,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:32,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:32,580 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:50:32,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391900642] [2022-11-16 12:50:32,580 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:50:32,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:50:32,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:50:32,587 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:50:32,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:50:33,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:50:33,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:50:33,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 3473 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:50:33,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:50:35,167 INFO L134 CoverageAnalysis]: Checked inductivity of 7883 backedges. 0 proven. 5526 refuted. 0 times theorem prover too weak. 2357 trivial. 0 not checked. [2022-11-16 12:50:35,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:50:36,547 INFO L134 CoverageAnalysis]: Checked inductivity of 7883 backedges. 0 proven. 5526 refuted. 0 times theorem prover too weak. 2357 trivial. 0 not checked. [2022-11-16 12:50:36,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:36,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652544402] [2022-11-16 12:50:36,548 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:50:36,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391900642] [2022-11-16 12:50:36,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391900642] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:50:36,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:50:36,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 12:50:36,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913652381] [2022-11-16 12:50:36,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:50:36,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:50:36,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:36,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:50:36,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:50:36,565 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 253 [2022-11-16 12:50:36,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 252 transitions, 675 flow. Second operand has 16 states, 16 states have (on average 222.375) internal successors, (3558), 16 states have internal predecessors, (3558), 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) [2022-11-16 12:50:36,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:36,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 253 [2022-11-16 12:50:36,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:38,015 INFO L130 PetriNetUnfolder]: 11/2108 cut-off events. [2022-11-16 12:50:38,015 INFO L131 PetriNetUnfolder]: For 346/346 co-relation queries the response was YES. [2022-11-16 12:50:38,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2823 conditions, 2108 events. 11/2108 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 168 event pairs, 0 based on Foata normal form. 4/2103 useless extension candidates. Maximal degree in co-relation 2806. Up to 70 conditions per place. [2022-11-16 12:50:38,024 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 40 selfloop transitions, 21 changer transitions 0/294 dead transitions. [2022-11-16 12:50:38,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 294 transitions, 941 flow [2022-11-16 12:50:38,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:50:38,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:50:38,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4664 transitions. [2022-11-16 12:50:38,035 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8778467908902692 [2022-11-16 12:50:38,036 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4664 transitions. [2022-11-16 12:50:38,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4664 transitions. [2022-11-16 12:50:38,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:38,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4664 transitions. [2022-11-16 12:50:38,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 222.0952380952381) internal successors, (4664), 21 states have internal predecessors, (4664), 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) [2022-11-16 12:50:38,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 253.0) internal successors, (5566), 22 states have internal predecessors, (5566), 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) [2022-11-16 12:50:38,111 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 253.0) internal successors, (5566), 22 states have internal predecessors, (5566), 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) [2022-11-16 12:50:38,111 INFO L175 Difference]: Start difference. First operand has 268 places, 252 transitions, 675 flow. Second operand 21 states and 4664 transitions. [2022-11-16 12:50:38,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 294 transitions, 941 flow [2022-11-16 12:50:38,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 294 transitions, 927 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-16 12:50:38,127 INFO L231 Difference]: Finished difference. Result has 292 places, 265 transitions, 799 flow [2022-11-16 12:50:38,128 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=799, PETRI_PLACES=292, PETRI_TRANSITIONS=265} [2022-11-16 12:50:38,129 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 66 predicate places. [2022-11-16 12:50:38,129 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 265 transitions, 799 flow [2022-11-16 12:50:38,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 222.375) internal successors, (3558), 16 states have internal predecessors, (3558), 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) [2022-11-16 12:50:38,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:38,132 INFO L209 CegarLoopForPetriNet]: trace histogram [49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:38,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 12:50:38,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:50:38,345 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:50:38,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:38,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1653234436, now seen corresponding path program 5 times [2022-11-16 12:50:38,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:38,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518228275] [2022-11-16 12:50:38,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:38,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:38,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:50:38,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1743727787] [2022-11-16 12:50:38,717 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:50:38,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:50:38,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:50:38,719 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:50:38,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dfd9615-5452-439b-aba4-0040b89e4231/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process