./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_rmo.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c3857c-140b-436e-ac24-72764e657432/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c3857c-140b-436e-ac24-72764e657432/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c3857c-140b-436e-ac24-72764e657432/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c3857c-140b-436e-ac24-72764e657432/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_rmo.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c3857c-140b-436e-ac24-72764e657432/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c3857c-140b-436e-ac24-72764e657432/bin/uautomizer-J5u9QxTXDZ --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 fa1630ab5b9ca06d45588653daa6fff0d3a2fbd0851a9f5c3999782c5c51eba5 --- 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-dbf71c6-m [2022-10-17 10:17:25,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:17:25,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:17:25,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:17:25,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:17:25,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:17:25,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:17:25,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:17:25,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:17:25,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:17:25,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:17:25,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:17:25,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:17:25,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:17:25,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:17:25,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:17:25,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:17:25,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:17:25,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:17:25,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:17:25,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:17:25,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:17:25,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:17:25,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:17:25,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:17:25,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:17:25,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:17:25,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:17:25,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:17:25,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:17:25,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:17:25,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:17:25,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:17:25,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:17:25,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:17:25,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:17:25,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:17:25,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:17:25,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:17:25,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:17:25,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:17:25,357 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c3857c-140b-436e-ac24-72764e657432/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:17:25,416 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:17:25,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:17:25,418 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:17:25,418 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:17:25,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:17:25,420 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:17:25,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:17:25,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:17:25,422 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:17:25,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:17:25,423 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:17:25,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:17:25,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:17:25,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:17:25,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:17:25,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:17:25,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:17:25,426 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:17:25,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:17:25,426 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:17:25,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:17:25,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:17:25,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:17:25,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:17:25,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:17:25,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:17:25,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:17:25,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:17:25,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:17:25,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:17:25,431 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:17:25,431 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:17:25,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:17:25,432 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_a4c3857c-140b-436e-ac24-72764e657432/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c3857c-140b-436e-ac24-72764e657432/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa1630ab5b9ca06d45588653daa6fff0d3a2fbd0851a9f5c3999782c5c51eba5 [2022-10-17 10:17:25,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:17:25,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:17:25,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:17:25,772 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:17:25,773 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:17:25,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c3857c-140b-436e-ac24-72764e657432/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/safe015_rmo.i [2022-10-17 10:17:25,842 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c3857c-140b-436e-ac24-72764e657432/bin/uautomizer-J5u9QxTXDZ/data/c9e577b2b/7447ef5d37594e70b2d72160c5d8fb92/FLAG1c692c603 [2022-10-17 10:17:26,471 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:17:26,472 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c3857c-140b-436e-ac24-72764e657432/sv-benchmarks/c/pthread-wmm/safe015_rmo.i [2022-10-17 10:17:26,490 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c3857c-140b-436e-ac24-72764e657432/bin/uautomizer-J5u9QxTXDZ/data/c9e577b2b/7447ef5d37594e70b2d72160c5d8fb92/FLAG1c692c603 [2022-10-17 10:17:26,675 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c3857c-140b-436e-ac24-72764e657432/bin/uautomizer-J5u9QxTXDZ/data/c9e577b2b/7447ef5d37594e70b2d72160c5d8fb92 [2022-10-17 10:17:26,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:17:26,683 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:17:26,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:17:26,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:17:26,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:17:26,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:17:26" (1/1) ... [2022-10-17 10:17:26,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@496ee014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:26, skipping insertion in model container [2022-10-17 10:17:26,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:17:26" (1/1) ... [2022-10-17 10:17:26,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:17:26,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:17:27,141 WARN L230 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_a4c3857c-140b-436e-ac24-72764e657432/sv-benchmarks/c/pthread-wmm/safe015_rmo.i[988,1001] [2022-10-17 10:17:27,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:17:27,438 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:17:27,462 WARN L230 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_a4c3857c-140b-436e-ac24-72764e657432/sv-benchmarks/c/pthread-wmm/safe015_rmo.i[988,1001] [2022-10-17 10:17:27,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:17:27,629 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:17:27,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:27 WrapperNode [2022-10-17 10:17:27,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:17:27,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:17:27,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:17:27,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:17:27,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:27" (1/1) ... [2022-10-17 10:17:27,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:27" (1/1) ... [2022-10-17 10:17:27,756 INFO L138 Inliner]: procedures = 176, calls = 84, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 258 [2022-10-17 10:17:27,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:17:27,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:17:27,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:17:27,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:17:27,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:27" (1/1) ... [2022-10-17 10:17:27,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:27" (1/1) ... [2022-10-17 10:17:27,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:27" (1/1) ... [2022-10-17 10:17:27,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:27" (1/1) ... [2022-10-17 10:17:27,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:27" (1/1) ... [2022-10-17 10:17:27,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:27" (1/1) ... [2022-10-17 10:17:27,839 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:27" (1/1) ... [2022-10-17 10:17:27,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:27" (1/1) ... [2022-10-17 10:17:27,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:17:27,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:17:27,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:17:27,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:17:27,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:27" (1/1) ... [2022-10-17 10:17:27,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:17:27,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c3857c-140b-436e-ac24-72764e657432/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:17:27,908 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c3857c-140b-436e-ac24-72764e657432/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:17:27,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c3857c-140b-436e-ac24-72764e657432/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:17:27,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:17:27,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:17:27,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:17:27,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:17:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:17:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:17:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:17:27,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:17:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:17:27,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:17:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:17:27,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:17:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:17:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:17:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:17:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:17:27,952 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:17:28,160 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:17:28,162 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:17:29,396 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:17:30,272 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:17:30,272 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:17:30,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:17:30 BoogieIcfgContainer [2022-10-17 10:17:30,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:17:30,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:17:30,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:17:30,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:17:30,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:17:26" (1/3) ... [2022-10-17 10:17:30,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79720b17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:17:30, skipping insertion in model container [2022-10-17 10:17:30,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:17:27" (2/3) ... [2022-10-17 10:17:30,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79720b17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:17:30, skipping insertion in model container [2022-10-17 10:17:30,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:17:30" (3/3) ... [2022-10-17 10:17:30,285 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_rmo.i [2022-10-17 10:17:30,295 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:17:30,306 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:17:30,306 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:17:30,306 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:17:30,447 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:17:30,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 131 transitions, 277 flow [2022-10-17 10:17:30,615 INFO L130 PetriNetUnfolder]: 2/128 cut-off events. [2022-10-17 10:17:30,616 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:17:30,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 128 events. 2/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2022-10-17 10:17:30,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 131 transitions, 277 flow [2022-10-17 10:17:30,629 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 114 transitions, 237 flow [2022-10-17 10:17:30,649 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:17:30,660 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;@570b042d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:17:30,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 10:17:30,732 INFO L130 PetriNetUnfolder]: 1/113 cut-off events. [2022-10-17 10:17:30,732 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:17:30,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:17:30,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:30,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:17:30,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:30,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1334014140, now seen corresponding path program 1 times [2022-10-17 10:17:30,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:30,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829602944] [2022-10-17 10:17:30,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:30,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:32,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:17:32,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:32,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829602944] [2022-10-17 10:17:32,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829602944] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:32,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:32,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:17:32,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170888167] [2022-10-17 10:17:32,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:32,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:17:32,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:32,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:17:32,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:17:32,102 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 131 [2022-10-17 10:17:32,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 114 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 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) [2022-10-17 10:17:32,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:17:32,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 131 [2022-10-17 10:17:32,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:17:33,228 INFO L130 PetriNetUnfolder]: 422/935 cut-off events. [2022-10-17 10:17:33,229 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-10-17 10:17:33,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1637 conditions, 935 events. 422/935 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5407 event pairs, 108 based on Foata normal form. 31/941 useless extension candidates. Maximal degree in co-relation 1566. Up to 400 conditions per place. [2022-10-17 10:17:33,243 INFO L137 encePairwiseOnDemand]: 123/131 looper letters, 21 selfloop transitions, 3 changer transitions 37/157 dead transitions. [2022-10-17 10:17:33,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 157 transitions, 451 flow [2022-10-17 10:17:33,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:17:33,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:17:33,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1055 transitions. [2022-10-17 10:17:33,267 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8948261238337574 [2022-10-17 10:17:33,268 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1055 transitions. [2022-10-17 10:17:33,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1055 transitions. [2022-10-17 10:17:33,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:17:33,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1055 transitions. [2022-10-17 10:17:33,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 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) [2022-10-17 10:17:33,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 131.0) internal successors, (1310), 10 states have internal predecessors, (1310), 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) [2022-10-17 10:17:33,299 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 131.0) internal successors, (1310), 10 states have internal predecessors, (1310), 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) [2022-10-17 10:17:33,301 INFO L175 Difference]: Start difference. First operand has 123 places, 114 transitions, 237 flow. Second operand 9 states and 1055 transitions. [2022-10-17 10:17:33,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 157 transitions, 451 flow [2022-10-17 10:17:33,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 157 transitions, 446 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-10-17 10:17:33,315 INFO L231 Difference]: Finished difference. Result has 135 places, 115 transitions, 275 flow [2022-10-17 10:17:33,318 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=275, PETRI_PLACES=135, PETRI_TRANSITIONS=115} [2022-10-17 10:17:33,323 INFO L287 CegarLoopForPetriNet]: 123 programPoint places, 12 predicate places. [2022-10-17 10:17:33,324 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 115 transitions, 275 flow [2022-10-17 10:17:33,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 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) [2022-10-17 10:17:33,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:17:33,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:33,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:17:33,326 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:17:33,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:33,328 INFO L85 PathProgramCache]: Analyzing trace with hash -433815519, now seen corresponding path program 1 times [2022-10-17 10:17:33,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:33,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334327781] [2022-10-17 10:17:33,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:33,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:34,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:17:34,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:34,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334327781] [2022-10-17 10:17:34,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334327781] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:34,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:34,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:17:34,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574807772] [2022-10-17 10:17:34,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:34,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:17:34,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:34,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:17:34,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:17:34,142 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 131 [2022-10-17 10:17:34,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 115 transitions, 275 flow. Second operand has 7 states, 7 states have (on average 112.71428571428571) internal successors, (789), 7 states have internal predecessors, (789), 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) [2022-10-17 10:17:34,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:17:34,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 131 [2022-10-17 10:17:34,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:17:34,862 INFO L130 PetriNetUnfolder]: 266/658 cut-off events. [2022-10-17 10:17:34,862 INFO L131 PetriNetUnfolder]: For 516/516 co-relation queries the response was YES. [2022-10-17 10:17:34,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1496 conditions, 658 events. 266/658 cut-off events. For 516/516 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3323 event pairs, 64 based on Foata normal form. 16/659 useless extension candidates. Maximal degree in co-relation 1418. Up to 229 conditions per place. [2022-10-17 10:17:34,871 INFO L137 encePairwiseOnDemand]: 124/131 looper letters, 16 selfloop transitions, 3 changer transitions 25/143 dead transitions. [2022-10-17 10:17:34,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 143 transitions, 437 flow [2022-10-17 10:17:34,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:17:34,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:17:34,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1156 transitions. [2022-10-17 10:17:34,878 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8824427480916031 [2022-10-17 10:17:34,878 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1156 transitions. [2022-10-17 10:17:34,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1156 transitions. [2022-10-17 10:17:34,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:17:34,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1156 transitions. [2022-10-17 10:17:34,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 115.6) internal successors, (1156), 10 states have internal predecessors, (1156), 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) [2022-10-17 10:17:34,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 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) [2022-10-17 10:17:34,890 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 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) [2022-10-17 10:17:34,890 INFO L175 Difference]: Start difference. First operand has 135 places, 115 transitions, 275 flow. Second operand 10 states and 1156 transitions. [2022-10-17 10:17:34,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 143 transitions, 437 flow [2022-10-17 10:17:34,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 143 transitions, 420 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-10-17 10:17:34,904 INFO L231 Difference]: Finished difference. Result has 141 places, 115 transitions, 288 flow [2022-10-17 10:17:34,905 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=288, PETRI_PLACES=141, PETRI_TRANSITIONS=115} [2022-10-17 10:17:34,907 INFO L287 CegarLoopForPetriNet]: 123 programPoint places, 18 predicate places. [2022-10-17 10:17:34,907 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 115 transitions, 288 flow [2022-10-17 10:17:34,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.71428571428571) internal successors, (789), 7 states have internal predecessors, (789), 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) [2022-10-17 10:17:34,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:17:34,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:34,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:17:34,910 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:17:34,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:34,911 INFO L85 PathProgramCache]: Analyzing trace with hash -973069228, now seen corresponding path program 1 times [2022-10-17 10:17:34,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:34,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947219494] [2022-10-17 10:17:34,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:34,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:35,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:17:35,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:35,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947219494] [2022-10-17 10:17:35,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947219494] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:35,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:35,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:17:35,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049899523] [2022-10-17 10:17:35,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:35,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:17:35,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:35,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:17:35,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:17:35,494 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 131 [2022-10-17 10:17:35,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 115 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 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) [2022-10-17 10:17:35,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:17:35,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 131 [2022-10-17 10:17:35,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:17:36,319 INFO L130 PetriNetUnfolder]: 366/882 cut-off events. [2022-10-17 10:17:36,319 INFO L131 PetriNetUnfolder]: For 918/926 co-relation queries the response was YES. [2022-10-17 10:17:36,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2135 conditions, 882 events. 366/882 cut-off events. For 918/926 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5139 event pairs, 128 based on Foata normal form. 20/869 useless extension candidates. Maximal degree in co-relation 2052. Up to 254 conditions per place. [2022-10-17 10:17:36,331 INFO L137 encePairwiseOnDemand]: 125/131 looper letters, 24 selfloop transitions, 3 changer transitions 28/151 dead transitions. [2022-10-17 10:17:36,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 151 transitions, 540 flow [2022-10-17 10:17:36,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:17:36,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:17:36,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1046 transitions. [2022-10-17 10:17:36,338 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8871925360474979 [2022-10-17 10:17:36,340 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1046 transitions. [2022-10-17 10:17:36,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1046 transitions. [2022-10-17 10:17:36,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:17:36,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1046 transitions. [2022-10-17 10:17:36,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 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) [2022-10-17 10:17:36,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 131.0) internal successors, (1310), 10 states have internal predecessors, (1310), 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) [2022-10-17 10:17:36,353 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 131.0) internal successors, (1310), 10 states have internal predecessors, (1310), 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) [2022-10-17 10:17:36,353 INFO L175 Difference]: Start difference. First operand has 141 places, 115 transitions, 288 flow. Second operand 9 states and 1046 transitions. [2022-10-17 10:17:36,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 151 transitions, 540 flow [2022-10-17 10:17:36,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 151 transitions, 486 flow, removed 24 selfloop flow, removed 9 redundant places. [2022-10-17 10:17:36,369 INFO L231 Difference]: Finished difference. Result has 141 places, 115 transitions, 291 flow [2022-10-17 10:17:36,370 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=291, PETRI_PLACES=141, PETRI_TRANSITIONS=115} [2022-10-17 10:17:36,374 INFO L287 CegarLoopForPetriNet]: 123 programPoint places, 18 predicate places. [2022-10-17 10:17:36,374 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 115 transitions, 291 flow [2022-10-17 10:17:36,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 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) [2022-10-17 10:17:36,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:17:36,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:36,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:17:36,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:17:36,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:36,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1982595616, now seen corresponding path program 1 times [2022-10-17 10:17:36,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:36,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834765740] [2022-10-17 10:17:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:36,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:17:36,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:36,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834765740] [2022-10-17 10:17:36,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834765740] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:36,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:36,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:17:36,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835767686] [2022-10-17 10:17:36,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:36,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:17:36,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:36,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:17:36,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:17:36,945 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 131 [2022-10-17 10:17:36,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 115 transitions, 291 flow. Second operand has 6 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 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) [2022-10-17 10:17:36,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:17:36,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 131 [2022-10-17 10:17:36,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:17:38,292 INFO L130 PetriNetUnfolder]: 1231/2563 cut-off events. [2022-10-17 10:17:38,292 INFO L131 PetriNetUnfolder]: For 771/785 co-relation queries the response was YES. [2022-10-17 10:17:38,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5134 conditions, 2563 events. 1231/2563 cut-off events. For 771/785 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 17975 event pairs, 76 based on Foata normal form. 0/2462 useless extension candidates. Maximal degree in co-relation 5052. Up to 779 conditions per place. [2022-10-17 10:17:38,314 INFO L137 encePairwiseOnDemand]: 121/131 looper letters, 29 selfloop transitions, 6 changer transitions 45/175 dead transitions. [2022-10-17 10:17:38,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 175 transitions, 582 flow [2022-10-17 10:17:38,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:17:38,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:17:38,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1162 transitions. [2022-10-17 10:17:38,321 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8870229007633588 [2022-10-17 10:17:38,321 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1162 transitions. [2022-10-17 10:17:38,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1162 transitions. [2022-10-17 10:17:38,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:17:38,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1162 transitions. [2022-10-17 10:17:38,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 116.2) internal successors, (1162), 10 states have internal predecessors, (1162), 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) [2022-10-17 10:17:38,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 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) [2022-10-17 10:17:38,341 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 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) [2022-10-17 10:17:38,341 INFO L175 Difference]: Start difference. First operand has 141 places, 115 transitions, 291 flow. Second operand 10 states and 1162 transitions. [2022-10-17 10:17:38,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 175 transitions, 582 flow [2022-10-17 10:17:38,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 175 transitions, 561 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-10-17 10:17:38,358 INFO L231 Difference]: Finished difference. Result has 143 places, 117 transitions, 324 flow [2022-10-17 10:17:38,360 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=324, PETRI_PLACES=143, PETRI_TRANSITIONS=117} [2022-10-17 10:17:38,362 INFO L287 CegarLoopForPetriNet]: 123 programPoint places, 20 predicate places. [2022-10-17 10:17:38,362 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 117 transitions, 324 flow [2022-10-17 10:17:38,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 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) [2022-10-17 10:17:38,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:17:38,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:38,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:17:38,365 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:17:38,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:38,365 INFO L85 PathProgramCache]: Analyzing trace with hash -2111945343, now seen corresponding path program 1 times [2022-10-17 10:17:38,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:38,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865965401] [2022-10-17 10:17:38,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:38,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:17:39,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:39,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865965401] [2022-10-17 10:17:39,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865965401] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:39,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:39,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:17:39,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101760773] [2022-10-17 10:17:39,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:39,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:17:39,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:39,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:17:39,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:17:39,121 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 131 [2022-10-17 10:17:39,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 117 transitions, 324 flow. Second operand has 7 states, 7 states have (on average 110.14285714285714) internal successors, (771), 7 states have internal predecessors, (771), 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) [2022-10-17 10:17:39,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:17:39,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 131 [2022-10-17 10:17:39,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:17:39,930 INFO L130 PetriNetUnfolder]: 430/1136 cut-off events. [2022-10-17 10:17:39,931 INFO L131 PetriNetUnfolder]: For 1251/1256 co-relation queries the response was YES. [2022-10-17 10:17:39,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3127 conditions, 1136 events. 430/1136 cut-off events. For 1251/1256 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7068 event pairs, 37 based on Foata normal form. 42/1161 useless extension candidates. Maximal degree in co-relation 3043. Up to 294 conditions per place. [2022-10-17 10:17:39,942 INFO L137 encePairwiseOnDemand]: 122/131 looper letters, 34 selfloop transitions, 9 changer transitions 35/173 dead transitions. [2022-10-17 10:17:39,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 173 transitions, 732 flow [2022-10-17 10:17:39,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:17:39,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:17:39,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1160 transitions. [2022-10-17 10:17:39,947 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8854961832061069 [2022-10-17 10:17:39,948 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1160 transitions. [2022-10-17 10:17:39,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1160 transitions. [2022-10-17 10:17:39,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:17:39,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1160 transitions. [2022-10-17 10:17:39,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 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) [2022-10-17 10:17:39,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 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) [2022-10-17 10:17:39,958 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 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) [2022-10-17 10:17:39,958 INFO L175 Difference]: Start difference. First operand has 143 places, 117 transitions, 324 flow. Second operand 10 states and 1160 transitions. [2022-10-17 10:17:39,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 173 transitions, 732 flow [2022-10-17 10:17:39,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 173 transitions, 708 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-10-17 10:17:39,970 INFO L231 Difference]: Finished difference. Result has 147 places, 120 transitions, 392 flow [2022-10-17 10:17:39,971 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=392, PETRI_PLACES=147, PETRI_TRANSITIONS=120} [2022-10-17 10:17:39,974 INFO L287 CegarLoopForPetriNet]: 123 programPoint places, 24 predicate places. [2022-10-17 10:17:39,974 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 120 transitions, 392 flow [2022-10-17 10:17:39,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.14285714285714) internal successors, (771), 7 states have internal predecessors, (771), 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) [2022-10-17 10:17:39,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:17:39,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:39,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:17:39,976 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:17:39,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:39,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1160376699, now seen corresponding path program 1 times [2022-10-17 10:17:39,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:39,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533653248] [2022-10-17 10:17:39,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:39,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:45,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:17:45,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:45,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533653248] [2022-10-17 10:17:45,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533653248] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:45,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:45,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-10-17 10:17:45,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700927817] [2022-10-17 10:17:45,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:45,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-17 10:17:45,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:45,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-17 10:17:45,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:17:45,334 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 131 [2022-10-17 10:17:45,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 120 transitions, 392 flow. Second operand has 14 states, 14 states have (on average 98.0) internal successors, (1372), 14 states have internal predecessors, (1372), 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) [2022-10-17 10:17:45,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:17:45,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 131 [2022-10-17 10:17:45,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:17:46,171 INFO L130 PetriNetUnfolder]: 217/1091 cut-off events. [2022-10-17 10:17:46,172 INFO L131 PetriNetUnfolder]: For 2040/2117 co-relation queries the response was YES. [2022-10-17 10:17:46,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2879 conditions, 1091 events. 217/1091 cut-off events. For 2040/2117 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7570 event pairs, 64 based on Foata normal form. 34/1101 useless extension candidates. Maximal degree in co-relation 2779. Up to 207 conditions per place. [2022-10-17 10:17:46,186 INFO L137 encePairwiseOnDemand]: 114/131 looper letters, 32 selfloop transitions, 13 changer transitions 25/159 dead transitions. [2022-10-17 10:17:46,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 159 transitions, 635 flow [2022-10-17 10:17:46,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 10:17:46,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-10-17 10:17:46,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1608 transitions. [2022-10-17 10:17:46,193 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.767175572519084 [2022-10-17 10:17:46,193 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1608 transitions. [2022-10-17 10:17:46,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1608 transitions. [2022-10-17 10:17:46,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:17:46,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1608 transitions. [2022-10-17 10:17:46,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 100.5) internal successors, (1608), 16 states have internal predecessors, (1608), 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) [2022-10-17 10:17:46,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 131.0) internal successors, (2227), 17 states have internal predecessors, (2227), 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) [2022-10-17 10:17:46,208 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 131.0) internal successors, (2227), 17 states have internal predecessors, (2227), 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) [2022-10-17 10:17:46,208 INFO L175 Difference]: Start difference. First operand has 147 places, 120 transitions, 392 flow. Second operand 16 states and 1608 transitions. [2022-10-17 10:17:46,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 159 transitions, 635 flow [2022-10-17 10:17:46,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 159 transitions, 579 flow, removed 20 selfloop flow, removed 9 redundant places. [2022-10-17 10:17:46,230 INFO L231 Difference]: Finished difference. Result has 156 places, 125 transitions, 420 flow [2022-10-17 10:17:46,231 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=420, PETRI_PLACES=156, PETRI_TRANSITIONS=125} [2022-10-17 10:17:46,232 INFO L287 CegarLoopForPetriNet]: 123 programPoint places, 33 predicate places. [2022-10-17 10:17:46,232 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 125 transitions, 420 flow [2022-10-17 10:17:46,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 98.0) internal successors, (1372), 14 states have internal predecessors, (1372), 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) [2022-10-17 10:17:46,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:17:46,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:46,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:17:46,235 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:17:46,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:46,235 INFO L85 PathProgramCache]: Analyzing trace with hash 586066253, now seen corresponding path program 1 times [2022-10-17 10:17:46,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:46,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503235780] [2022-10-17 10:17:46,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:46,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:47,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:17:47,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:47,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503235780] [2022-10-17 10:17:47,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503235780] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:47,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:47,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:17:47,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494337764] [2022-10-17 10:17:47,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:47,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:17:47,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:47,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:17:47,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:17:47,070 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 131 [2022-10-17 10:17:47,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 125 transitions, 420 flow. Second operand has 8 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:47,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:17:47,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 131 [2022-10-17 10:17:47,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:17:47,968 INFO L130 PetriNetUnfolder]: 281/1354 cut-off events. [2022-10-17 10:17:47,969 INFO L131 PetriNetUnfolder]: For 1936/2024 co-relation queries the response was YES. [2022-10-17 10:17:47,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3523 conditions, 1354 events. 281/1354 cut-off events. For 1936/2024 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10323 event pairs, 91 based on Foata normal form. 46/1368 useless extension candidates. Maximal degree in co-relation 3422. Up to 278 conditions per place. [2022-10-17 10:17:47,987 INFO L137 encePairwiseOnDemand]: 120/131 looper letters, 29 selfloop transitions, 7 changer transitions 38/169 dead transitions. [2022-10-17 10:17:47,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 169 transitions, 829 flow [2022-10-17 10:17:47,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:17:47,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-10-17 10:17:47,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1601 transitions. [2022-10-17 10:17:47,996 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8147582697201018 [2022-10-17 10:17:47,996 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1601 transitions. [2022-10-17 10:17:47,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1601 transitions. [2022-10-17 10:17:47,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:17:47,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1601 transitions. [2022-10-17 10:17:48,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 106.73333333333333) internal successors, (1601), 15 states have internal predecessors, (1601), 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) [2022-10-17 10:17:48,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 131.0) internal successors, (2096), 16 states have internal predecessors, (2096), 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) [2022-10-17 10:17:48,013 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 131.0) internal successors, (2096), 16 states have internal predecessors, (2096), 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) [2022-10-17 10:17:48,013 INFO L175 Difference]: Start difference. First operand has 156 places, 125 transitions, 420 flow. Second operand 15 states and 1601 transitions. [2022-10-17 10:17:48,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 169 transitions, 829 flow [2022-10-17 10:17:48,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 169 transitions, 781 flow, removed 12 selfloop flow, removed 11 redundant places. [2022-10-17 10:17:48,024 INFO L231 Difference]: Finished difference. Result has 165 places, 129 transitions, 472 flow [2022-10-17 10:17:48,025 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=472, PETRI_PLACES=165, PETRI_TRANSITIONS=129} [2022-10-17 10:17:48,027 INFO L287 CegarLoopForPetriNet]: 123 programPoint places, 42 predicate places. [2022-10-17 10:17:48,027 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 129 transitions, 472 flow [2022-10-17 10:17:48,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:48,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:17:48,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:48,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:17:48,029 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:17:48,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:48,030 INFO L85 PathProgramCache]: Analyzing trace with hash 2009259801, now seen corresponding path program 2 times [2022-10-17 10:17:48,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:48,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296772334] [2022-10-17 10:17:48,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:48,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:17:48,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:48,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296772334] [2022-10-17 10:17:48,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296772334] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:48,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:48,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:17:48,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092353900] [2022-10-17 10:17:48,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:48,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:17:48,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:48,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:17:48,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:17:48,731 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 131 [2022-10-17 10:17:48,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 129 transitions, 472 flow. Second operand has 8 states, 8 states have (on average 110.125) internal successors, (881), 8 states have internal predecessors, (881), 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) [2022-10-17 10:17:48,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:17:48,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 131 [2022-10-17 10:17:48,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:17:49,390 INFO L130 PetriNetUnfolder]: 295/1120 cut-off events. [2022-10-17 10:17:49,391 INFO L131 PetriNetUnfolder]: For 1720/1809 co-relation queries the response was YES. [2022-10-17 10:17:49,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3230 conditions, 1120 events. 295/1120 cut-off events. For 1720/1809 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7893 event pairs, 30 based on Foata normal form. 45/1146 useless extension candidates. Maximal degree in co-relation 3194. Up to 183 conditions per place. [2022-10-17 10:17:49,405 INFO L137 encePairwiseOnDemand]: 122/131 looper letters, 25 selfloop transitions, 14 changer transitions 27/165 dead transitions. [2022-10-17 10:17:49,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 165 transitions, 815 flow [2022-10-17 10:17:49,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:17:49,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-10-17 10:17:49,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1247 transitions. [2022-10-17 10:17:49,412 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8653712699514227 [2022-10-17 10:17:49,412 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1247 transitions. [2022-10-17 10:17:49,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1247 transitions. [2022-10-17 10:17:49,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:17:49,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1247 transitions. [2022-10-17 10:17:49,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.36363636363636) internal successors, (1247), 11 states have internal predecessors, (1247), 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) [2022-10-17 10:17:49,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 131.0) internal successors, (1572), 12 states have internal predecessors, (1572), 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) [2022-10-17 10:17:49,425 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 131.0) internal successors, (1572), 12 states have internal predecessors, (1572), 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) [2022-10-17 10:17:49,426 INFO L175 Difference]: Start difference. First operand has 165 places, 129 transitions, 472 flow. Second operand 11 states and 1247 transitions. [2022-10-17 10:17:49,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 165 transitions, 815 flow [2022-10-17 10:17:49,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 165 transitions, 681 flow, removed 60 selfloop flow, removed 19 redundant places. [2022-10-17 10:17:49,438 INFO L231 Difference]: Finished difference. Result has 151 places, 129 transitions, 435 flow [2022-10-17 10:17:49,439 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=435, PETRI_PLACES=151, PETRI_TRANSITIONS=129} [2022-10-17 10:17:49,441 INFO L287 CegarLoopForPetriNet]: 123 programPoint places, 28 predicate places. [2022-10-17 10:17:49,441 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 129 transitions, 435 flow [2022-10-17 10:17:49,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 110.125) internal successors, (881), 8 states have internal predecessors, (881), 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) [2022-10-17 10:17:49,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:17:49,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:49,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:17:49,443 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:17:49,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:49,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1426873305, now seen corresponding path program 1 times [2022-10-17 10:17:49,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:49,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829971803] [2022-10-17 10:17:49,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:49,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:17:50,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:50,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829971803] [2022-10-17 10:17:50,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829971803] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:50,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:50,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:17:50,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104046041] [2022-10-17 10:17:50,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:50,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:17:50,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:50,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:17:50,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:17:50,767 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 131 [2022-10-17 10:17:50,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 129 transitions, 435 flow. Second operand has 9 states, 9 states have (on average 103.88888888888889) internal successors, (935), 9 states have internal predecessors, (935), 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) [2022-10-17 10:17:50,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:17:50,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 131 [2022-10-17 10:17:50,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:17:51,328 INFO L130 PetriNetUnfolder]: 148/965 cut-off events. [2022-10-17 10:17:51,328 INFO L131 PetriNetUnfolder]: For 1331/1411 co-relation queries the response was YES. [2022-10-17 10:17:51,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2503 conditions, 965 events. 148/965 cut-off events. For 1331/1411 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7467 event pairs, 28 based on Foata normal form. 11/966 useless extension candidates. Maximal degree in co-relation 2418. Up to 161 conditions per place. [2022-10-17 10:17:51,337 INFO L137 encePairwiseOnDemand]: 119/131 looper letters, 28 selfloop transitions, 9 changer transitions 15/149 dead transitions. [2022-10-17 10:17:51,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 149 transitions, 619 flow [2022-10-17 10:17:51,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:17:51,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:17:51,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1057 transitions. [2022-10-17 10:17:51,342 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8068702290076336 [2022-10-17 10:17:51,342 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1057 transitions. [2022-10-17 10:17:51,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1057 transitions. [2022-10-17 10:17:51,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:17:51,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1057 transitions. [2022-10-17 10:17:51,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 105.7) internal successors, (1057), 10 states have internal predecessors, (1057), 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) [2022-10-17 10:17:51,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 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) [2022-10-17 10:17:51,355 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 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) [2022-10-17 10:17:51,355 INFO L175 Difference]: Start difference. First operand has 151 places, 129 transitions, 435 flow. Second operand 10 states and 1057 transitions. [2022-10-17 10:17:51,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 149 transitions, 619 flow [2022-10-17 10:17:51,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 149 transitions, 573 flow, removed 16 selfloop flow, removed 8 redundant places. [2022-10-17 10:17:51,373 INFO L231 Difference]: Finished difference. Result has 156 places, 133 transitions, 456 flow [2022-10-17 10:17:51,374 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=456, PETRI_PLACES=156, PETRI_TRANSITIONS=133} [2022-10-17 10:17:51,375 INFO L287 CegarLoopForPetriNet]: 123 programPoint places, 33 predicate places. [2022-10-17 10:17:51,375 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 133 transitions, 456 flow [2022-10-17 10:17:51,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 103.88888888888889) internal successors, (935), 9 states have internal predecessors, (935), 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) [2022-10-17 10:17:51,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:17:51,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:51,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:17:51,379 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:17:51,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:51,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1681918503, now seen corresponding path program 2 times [2022-10-17 10:17:51,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:51,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694323249] [2022-10-17 10:17:51,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:51,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat