./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fef2b48-a3fd-4924-889c-bc8853ecc54e/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fef2b48-a3fd-4924-889c-bc8853ecc54e/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fef2b48-a3fd-4924-889c-bc8853ecc54e/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fef2b48-a3fd-4924-889c-bc8853ecc54e/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fef2b48-a3fd-4924-889c-bc8853ecc54e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fef2b48-a3fd-4924-889c-bc8853ecc54e/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:30:23,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:30:23,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:30:23,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:30:23,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:30:23,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:30:23,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:30:23,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:30:23,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:30:23,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:30:23,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:30:23,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:30:23,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:30:23,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:30:23,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:30:23,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:30:23,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:30:23,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:30:23,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:30:23,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:30:23,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:30:23,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:30:23,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:30:23,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:30:23,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:30:23,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:30:23,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:30:23,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:30:23,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:30:23,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:30:23,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:30:23,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:30:23,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:30:23,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:30:23,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:30:23,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:30:23,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:30:23,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:30:23,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:30:23,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:30:23,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:30:23,722 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fef2b48-a3fd-4924-889c-bc8853ecc54e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:30:23,770 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:30:23,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:30:23,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:30:23,772 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:30:23,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:30:23,773 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:30:23,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:30:23,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:30:23,774 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:30:23,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:30:23,775 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:30:23,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:30:23,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:30:23,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:30:23,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:30:23,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:30:23,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:30:23,777 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:30:23,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:30:23,777 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:30:23,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:30:23,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:30:23,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:30:23,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:30:23,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:30:23,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:30:23,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:30:23,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:30:23,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:30:23,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:30:23,781 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:30:23,781 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:30:23,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:30:23,782 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_6fef2b48-a3fd-4924-889c-bc8853ecc54e/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fef2b48-a3fd-4924-889c-bc8853ecc54e/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79419a4ba87d66b20bd1eac3a57771b6df78d8c052d6832c2c2f61b321d58321 [2022-11-18 18:30:24,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:30:24,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:30:24,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:30:24,111 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:30:24,112 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:30:24,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fef2b48-a3fd-4924-889c-bc8853ecc54e/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2022-11-18 18:30:24,191 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fef2b48-a3fd-4924-889c-bc8853ecc54e/bin/uautomizer-TMbwUNV5ro/data/bf8dffe01/37e97244f15441fb98a85020f8792f87/FLAG7757b32ae [2022-11-18 18:30:24,800 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:30:24,802 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fef2b48-a3fd-4924-889c-bc8853ecc54e/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c [2022-11-18 18:30:24,815 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fef2b48-a3fd-4924-889c-bc8853ecc54e/bin/uautomizer-TMbwUNV5ro/data/bf8dffe01/37e97244f15441fb98a85020f8792f87/FLAG7757b32ae [2022-11-18 18:30:25,146 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fef2b48-a3fd-4924-889c-bc8853ecc54e/bin/uautomizer-TMbwUNV5ro/data/bf8dffe01/37e97244f15441fb98a85020f8792f87 [2022-11-18 18:30:25,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:30:25,150 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:30:25,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:30:25,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:30:25,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:30:25,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:30:25" (1/1) ... [2022-11-18 18:30:25,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee1f98a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:25, skipping insertion in model container [2022-11-18 18:30:25,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:30:25" (1/1) ... [2022-11-18 18:30:25,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:30:25,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:30:25,409 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fef2b48-a3fd-4924-889c-bc8853ecc54e/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2022-11-18 18:30:25,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:30:25,425 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:30:25,448 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fef2b48-a3fd-4924-889c-bc8853ecc54e/sv-benchmarks/c/weaver/chl-exp-term-symm.wvr.c[2628,2641] [2022-11-18 18:30:25,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:30:25,473 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:30:25,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:25 WrapperNode [2022-11-18 18:30:25,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:30:25,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:30:25,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:30:25,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:30:25,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:25" (1/1) ... [2022-11-18 18:30:25,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:25" (1/1) ... [2022-11-18 18:30:25,516 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 128 [2022-11-18 18:30:25,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:30:25,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:30:25,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:30:25,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:30:25,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:25" (1/1) ... [2022-11-18 18:30:25,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:25" (1/1) ... [2022-11-18 18:30:25,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:25" (1/1) ... [2022-11-18 18:30:25,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:25" (1/1) ... [2022-11-18 18:30:25,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:25" (1/1) ... [2022-11-18 18:30:25,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:25" (1/1) ... [2022-11-18 18:30:25,539 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:25" (1/1) ... [2022-11-18 18:30:25,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:25" (1/1) ... [2022-11-18 18:30:25,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:30:25,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:30:25,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:30:25,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:30:25,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:25" (1/1) ... [2022-11-18 18:30:25,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:30:25,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fef2b48-a3fd-4924-889c-bc8853ecc54e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:30:25,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fef2b48-a3fd-4924-889c-bc8853ecc54e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:30:25,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fef2b48-a3fd-4924-889c-bc8853ecc54e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:30:25,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:30:25,637 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 18:30:25,638 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 18:30:25,638 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 18:30:25,638 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 18:30:25,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:30:25,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:30:25,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:30:25,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:30:25,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:30:25,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:30:25,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:30:25,643 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:30:25,817 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:30:25,832 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:30:26,227 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:30:26,236 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:30:26,236 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 18:30:26,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:30:26 BoogieIcfgContainer [2022-11-18 18:30:26,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:30:26,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:30:26,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:30:26,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:30:26,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:30:25" (1/3) ... [2022-11-18 18:30:26,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179ffe38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:30:26, skipping insertion in model container [2022-11-18 18:30:26,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:25" (2/3) ... [2022-11-18 18:30:26,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179ffe38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:30:26, skipping insertion in model container [2022-11-18 18:30:26,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:30:26" (3/3) ... [2022-11-18 18:30:26,249 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-exp-term-symm.wvr.c [2022-11-18 18:30:26,258 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:30:26,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:30:26,269 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:30:26,270 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:30:26,392 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 18:30:26,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 174 transitions, 364 flow [2022-11-18 18:30:26,529 INFO L130 PetriNetUnfolder]: 13/172 cut-off events. [2022-11-18 18:30:26,529 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:30:26,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 172 events. 13/172 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 285 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-11-18 18:30:26,536 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 174 transitions, 364 flow [2022-11-18 18:30:26,543 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 163 transitions, 338 flow [2022-11-18 18:30:26,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:30:26,561 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;@73c73361, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:30:26,562 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-18 18:30:26,610 INFO L130 PetriNetUnfolder]: 13/162 cut-off events. [2022-11-18 18:30:26,611 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:30:26,611 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:26,612 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:26,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:26,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:26,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1722697163, now seen corresponding path program 1 times [2022-11-18 18:30:26,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:26,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48789307] [2022-11-18 18:30:26,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:26,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:27,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:27,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48789307] [2022-11-18 18:30:27,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48789307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:27,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:27,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:30:27,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641279507] [2022-11-18 18:30:27,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:27,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:30:27,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:27,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:30:27,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:30:27,530 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 174 [2022-11-18 18:30:27,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 163 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:27,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:27,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 174 [2022-11-18 18:30:27,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:27,993 INFO L130 PetriNetUnfolder]: 58/428 cut-off events. [2022-11-18 18:30:27,993 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-18 18:30:28,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 626 conditions, 428 events. 58/428 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2038 event pairs, 12 based on Foata normal form. 24/424 useless extension candidates. Maximal degree in co-relation 382. Up to 44 conditions per place. [2022-11-18 18:30:28,004 INFO L137 encePairwiseOnDemand]: 154/174 looper letters, 52 selfloop transitions, 10 changer transitions 34/223 dead transitions. [2022-11-18 18:30:28,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 223 transitions, 677 flow [2022-11-18 18:30:28,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:30:28,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:30:28,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2175 transitions. [2022-11-18 18:30:28,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-11-18 18:30:28,042 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2175 transitions. [2022-11-18 18:30:28,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2175 transitions. [2022-11-18 18:30:28,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:28,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2175 transitions. [2022-11-18 18:30:28,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 145.0) internal successors, (2175), 15 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:28,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 174.0) internal successors, (2784), 16 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:28,074 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 174.0) internal successors, (2784), 16 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:28,077 INFO L175 Difference]: Start difference. First operand has 157 places, 163 transitions, 338 flow. Second operand 15 states and 2175 transitions. [2022-11-18 18:30:28,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 223 transitions, 677 flow [2022-11-18 18:30:28,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 223 transitions, 651 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 18:30:28,088 INFO L231 Difference]: Finished difference. Result has 177 places, 161 transitions, 389 flow [2022-11-18 18:30:28,091 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=389, PETRI_PLACES=177, PETRI_TRANSITIONS=161} [2022-11-18 18:30:28,094 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 20 predicate places. [2022-11-18 18:30:28,095 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 161 transitions, 389 flow [2022-11-18 18:30:28,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:28,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:28,096 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:28,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:30:28,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:28,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:28,098 INFO L85 PathProgramCache]: Analyzing trace with hash 394079607, now seen corresponding path program 1 times [2022-11-18 18:30:28,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:28,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332254717] [2022-11-18 18:30:28,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:28,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:28,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:28,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:28,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332254717] [2022-11-18 18:30:28,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332254717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:28,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:28,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:30:28,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100854042] [2022-11-18 18:30:28,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:28,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:30:28,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:28,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:30:28,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:28,462 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-11-18 18:30:28,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 161 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:28,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:28,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-11-18 18:30:28,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:28,810 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][52], [26#L50-19true, 44#L44-18true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), 109#L65-4true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 212#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))]) [2022-11-18 18:30:28,818 INFO L383 tUnfolder$Statistics]: this new event has 77 ancestors and is cut-off event [2022-11-18 18:30:28,819 INFO L386 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-11-18 18:30:28,819 INFO L386 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2022-11-18 18:30:28,819 INFO L386 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2022-11-18 18:30:28,822 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][115], [26#L50-19true, 44#L44-18true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), 109#L65-4true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 212#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))]) [2022-11-18 18:30:28,823 INFO L383 tUnfolder$Statistics]: this new event has 77 ancestors and is cut-off event [2022-11-18 18:30:28,823 INFO L386 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2022-11-18 18:30:28,823 INFO L386 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-11-18 18:30:28,824 INFO L386 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2022-11-18 18:30:28,825 INFO L381 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][52], [26#L50-19true, 44#L44-18true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), 109#L65-4true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 212#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))]) [2022-11-18 18:30:28,826 INFO L383 tUnfolder$Statistics]: this new event has 75 ancestors and is cut-off event [2022-11-18 18:30:28,826 INFO L386 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-11-18 18:30:28,827 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2022-11-18 18:30:28,827 INFO L386 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2022-11-18 18:30:28,827 INFO L386 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2022-11-18 18:30:28,830 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][115], [26#L50-19true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), 149#L44-19true, 109#L65-4true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 212#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))]) [2022-11-18 18:30:28,830 INFO L383 tUnfolder$Statistics]: this new event has 78 ancestors and is cut-off event [2022-11-18 18:30:28,831 INFO L386 tUnfolder$Statistics]: existing Event has 56 ancestors and is cut-off event [2022-11-18 18:30:28,831 INFO L386 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2022-11-18 18:30:28,831 INFO L386 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-11-18 18:30:28,832 INFO L381 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][115], [26#L50-19true, 44#L44-18true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), 109#L65-4true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 212#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))]) [2022-11-18 18:30:28,833 INFO L383 tUnfolder$Statistics]: this new event has 75 ancestors and is cut-off event [2022-11-18 18:30:28,833 INFO L386 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2022-11-18 18:30:28,833 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2022-11-18 18:30:28,834 INFO L386 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-11-18 18:30:28,834 INFO L386 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2022-11-18 18:30:28,841 INFO L381 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][115], [26#L50-19true, Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), 109#L65-4true, 149#L44-19true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 212#(= ~sort_label_is_null_3~0 (* (div ~sort_label_is_null_3~0 256) 256))]) [2022-11-18 18:30:28,842 INFO L383 tUnfolder$Statistics]: this new event has 76 ancestors and is cut-off event [2022-11-18 18:30:28,842 INFO L386 tUnfolder$Statistics]: existing Event has 56 ancestors and is cut-off event [2022-11-18 18:30:28,843 INFO L386 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2022-11-18 18:30:28,843 INFO L386 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-11-18 18:30:28,843 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-18 18:30:28,880 INFO L130 PetriNetUnfolder]: 107/1061 cut-off events. [2022-11-18 18:30:28,880 INFO L131 PetriNetUnfolder]: For 317/332 co-relation queries the response was YES. [2022-11-18 18:30:28,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 1061 events. 107/1061 cut-off events. For 317/332 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7984 event pairs, 17 based on Foata normal form. 6/964 useless extension candidates. Maximal degree in co-relation 1533. Up to 89 conditions per place. [2022-11-18 18:30:28,901 INFO L137 encePairwiseOnDemand]: 162/174 looper letters, 31 selfloop transitions, 12 changer transitions 1/185 dead transitions. [2022-11-18 18:30:28,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 185 transitions, 531 flow [2022-11-18 18:30:28,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:30:28,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:30:28,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 630 transitions. [2022-11-18 18:30:28,905 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9051724137931034 [2022-11-18 18:30:28,905 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 630 transitions. [2022-11-18 18:30:28,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 630 transitions. [2022-11-18 18:30:28,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:28,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 630 transitions. [2022-11-18 18:30:28,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:28,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:28,912 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:28,912 INFO L175 Difference]: Start difference. First operand has 177 places, 161 transitions, 389 flow. Second operand 4 states and 630 transitions. [2022-11-18 18:30:28,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 185 transitions, 531 flow [2022-11-18 18:30:28,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 185 transitions, 520 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-18 18:30:28,929 INFO L231 Difference]: Finished difference. Result has 168 places, 171 transitions, 466 flow [2022-11-18 18:30:28,929 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=466, PETRI_PLACES=168, PETRI_TRANSITIONS=171} [2022-11-18 18:30:28,930 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 11 predicate places. [2022-11-18 18:30:28,930 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 171 transitions, 466 flow [2022-11-18 18:30:28,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:28,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:28,932 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:28,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:30:28,933 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:28,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:28,937 INFO L85 PathProgramCache]: Analyzing trace with hash -51989873, now seen corresponding path program 2 times [2022-11-18 18:30:28,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:28,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314333743] [2022-11-18 18:30:28,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:28,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:29,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:29,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314333743] [2022-11-18 18:30:29,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314333743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:29,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:29,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:30:29,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267045658] [2022-11-18 18:30:29,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:29,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:30:29,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:29,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:30:29,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:29,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-11-18 18:30:29,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 171 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:29,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:29,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-11-18 18:30:29,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:29,477 INFO L130 PetriNetUnfolder]: 91/972 cut-off events. [2022-11-18 18:30:29,477 INFO L131 PetriNetUnfolder]: For 273/292 co-relation queries the response was YES. [2022-11-18 18:30:29,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1495 conditions, 972 events. 91/972 cut-off events. For 273/292 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7079 event pairs, 24 based on Foata normal form. 12/929 useless extension candidates. Maximal degree in co-relation 1251. Up to 106 conditions per place. [2022-11-18 18:30:29,486 INFO L137 encePairwiseOnDemand]: 163/174 looper letters, 37 selfloop transitions, 8 changer transitions 3/189 dead transitions. [2022-11-18 18:30:29,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 189 transitions, 634 flow [2022-11-18 18:30:29,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:30:29,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:30:29,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2022-11-18 18:30:29,489 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2022-11-18 18:30:29,489 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2022-11-18 18:30:29,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2022-11-18 18:30:29,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:29,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2022-11-18 18:30:29,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:29,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:29,497 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:29,497 INFO L175 Difference]: Start difference. First operand has 168 places, 171 transitions, 466 flow. Second operand 4 states and 624 transitions. [2022-11-18 18:30:29,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 189 transitions, 634 flow [2022-11-18 18:30:29,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 189 transitions, 634 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:30:29,511 INFO L231 Difference]: Finished difference. Result has 174 places, 176 transitions, 540 flow [2022-11-18 18:30:29,512 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=540, PETRI_PLACES=174, PETRI_TRANSITIONS=176} [2022-11-18 18:30:29,515 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 17 predicate places. [2022-11-18 18:30:29,515 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 176 transitions, 540 flow [2022-11-18 18:30:29,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:29,516 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:29,516 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:29,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:30:29,517 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:29,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:29,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1237716291, now seen corresponding path program 1 times [2022-11-18 18:30:29,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:29,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203274959] [2022-11-18 18:30:29,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:29,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:29,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:29,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:29,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203274959] [2022-11-18 18:30:29,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203274959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:29,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:29,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:30:29,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859693526] [2022-11-18 18:30:29,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:29,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:30:29,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:29,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:30:29,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:29,734 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-11-18 18:30:29,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 176 transitions, 540 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:29,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:29,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-11-18 18:30:29,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:30,027 INFO L130 PetriNetUnfolder]: 92/1151 cut-off events. [2022-11-18 18:30:30,027 INFO L131 PetriNetUnfolder]: For 433/454 co-relation queries the response was YES. [2022-11-18 18:30:30,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1817 conditions, 1151 events. 92/1151 cut-off events. For 433/454 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 8324 event pairs, 21 based on Foata normal form. 9/1104 useless extension candidates. Maximal degree in co-relation 1503. Up to 71 conditions per place. [2022-11-18 18:30:30,037 INFO L137 encePairwiseOnDemand]: 164/174 looper letters, 41 selfloop transitions, 11 changer transitions 3/196 dead transitions. [2022-11-18 18:30:30,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 196 transitions, 738 flow [2022-11-18 18:30:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:30:30,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:30:30,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 626 transitions. [2022-11-18 18:30:30,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8994252873563219 [2022-11-18 18:30:30,040 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 626 transitions. [2022-11-18 18:30:30,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 626 transitions. [2022-11-18 18:30:30,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:30,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 626 transitions. [2022-11-18 18:30:30,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.5) internal successors, (626), 4 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:30,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:30,046 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:30,046 INFO L175 Difference]: Start difference. First operand has 174 places, 176 transitions, 540 flow. Second operand 4 states and 626 transitions. [2022-11-18 18:30:30,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 196 transitions, 738 flow [2022-11-18 18:30:30,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 196 transitions, 738 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:30:30,056 INFO L231 Difference]: Finished difference. Result has 179 places, 179 transitions, 602 flow [2022-11-18 18:30:30,057 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=602, PETRI_PLACES=179, PETRI_TRANSITIONS=179} [2022-11-18 18:30:30,059 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 22 predicate places. [2022-11-18 18:30:30,059 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 179 transitions, 602 flow [2022-11-18 18:30:30,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:30,060 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:30,063 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:30,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:30:30,063 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:30,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:30,065 INFO L85 PathProgramCache]: Analyzing trace with hash -740399571, now seen corresponding path program 2 times [2022-11-18 18:30:30,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:30,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896698872] [2022-11-18 18:30:30,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:30,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:30,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:30,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:30,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896698872] [2022-11-18 18:30:30,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896698872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:30,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:30,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:30:30,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444001227] [2022-11-18 18:30:30,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:30,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:30:30,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:30,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:30:30,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:30,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-11-18 18:30:30,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 179 transitions, 602 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:30,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:30,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-11-18 18:30:30,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:30,461 INFO L130 PetriNetUnfolder]: 87/1121 cut-off events. [2022-11-18 18:30:30,461 INFO L131 PetriNetUnfolder]: For 619/637 co-relation queries the response was YES. [2022-11-18 18:30:30,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1844 conditions, 1121 events. 87/1121 cut-off events. For 619/637 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7921 event pairs, 26 based on Foata normal form. 13/1084 useless extension candidates. Maximal degree in co-relation 1551. Up to 91 conditions per place. [2022-11-18 18:30:30,468 INFO L137 encePairwiseOnDemand]: 163/174 looper letters, 42 selfloop transitions, 13 changer transitions 3/199 dead transitions. [2022-11-18 18:30:30,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 199 transitions, 826 flow [2022-11-18 18:30:30,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:30:30,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:30:30,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2022-11-18 18:30:30,470 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2022-11-18 18:30:30,471 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2022-11-18 18:30:30,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2022-11-18 18:30:30,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:30,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2022-11-18 18:30:30,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:30,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:30,475 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:30,475 INFO L175 Difference]: Start difference. First operand has 179 places, 179 transitions, 602 flow. Second operand 4 states and 624 transitions. [2022-11-18 18:30:30,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 199 transitions, 826 flow [2022-11-18 18:30:30,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 199 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:30:30,483 INFO L231 Difference]: Finished difference. Result has 183 places, 185 transitions, 698 flow [2022-11-18 18:30:30,483 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=698, PETRI_PLACES=183, PETRI_TRANSITIONS=185} [2022-11-18 18:30:30,484 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2022-11-18 18:30:30,484 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 185 transitions, 698 flow [2022-11-18 18:30:30,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:30,485 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:30,485 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:30,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:30:30,485 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:30,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:30,486 INFO L85 PathProgramCache]: Analyzing trace with hash -84232133, now seen corresponding path program 3 times [2022-11-18 18:30:30,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:30,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970128986] [2022-11-18 18:30:30,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:30,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:30,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:30,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:30,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970128986] [2022-11-18 18:30:30,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970128986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:30,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:30,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:30:30,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113575944] [2022-11-18 18:30:30,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:30,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:30:30,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:30,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:30:30,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:30,632 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-11-18 18:30:30,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 185 transitions, 698 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:30,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:30,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-11-18 18:30:30,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:30,866 INFO L130 PetriNetUnfolder]: 77/1089 cut-off events. [2022-11-18 18:30:30,867 INFO L131 PetriNetUnfolder]: For 692/704 co-relation queries the response was YES. [2022-11-18 18:30:30,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1803 conditions, 1089 events. 77/1089 cut-off events. For 692/704 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 7550 event pairs, 22 based on Foata normal form. 9/1046 useless extension candidates. Maximal degree in co-relation 1530. Up to 91 conditions per place. [2022-11-18 18:30:30,876 INFO L137 encePairwiseOnDemand]: 162/174 looper letters, 40 selfloop transitions, 16 changer transitions 3/200 dead transitions. [2022-11-18 18:30:30,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 200 transitions, 888 flow [2022-11-18 18:30:30,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:30:30,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:30:30,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2022-11-18 18:30:30,881 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2022-11-18 18:30:30,882 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2022-11-18 18:30:30,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2022-11-18 18:30:30,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:30,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2022-11-18 18:30:30,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:30,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:30,911 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:30,911 INFO L175 Difference]: Start difference. First operand has 183 places, 185 transitions, 698 flow. Second operand 4 states and 624 transitions. [2022-11-18 18:30:30,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 200 transitions, 888 flow [2022-11-18 18:30:30,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 200 transitions, 864 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:30:30,921 INFO L231 Difference]: Finished difference. Result has 185 places, 188 transitions, 759 flow [2022-11-18 18:30:30,922 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=759, PETRI_PLACES=185, PETRI_TRANSITIONS=188} [2022-11-18 18:30:30,924 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 28 predicate places. [2022-11-18 18:30:30,925 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 188 transitions, 759 flow [2022-11-18 18:30:30,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:30,925 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:30,926 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:30,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:30:30,926 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:30,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:30,927 INFO L85 PathProgramCache]: Analyzing trace with hash 698734073, now seen corresponding path program 3 times [2022-11-18 18:30:30,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:30,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708431096] [2022-11-18 18:30:30,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:30,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:31,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:31,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:31,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708431096] [2022-11-18 18:30:31,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708431096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:31,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:31,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:30:31,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081590067] [2022-11-18 18:30:31,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:31,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:30:31,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:31,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:30:31,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:31,062 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-11-18 18:30:31,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 188 transitions, 759 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:31,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:31,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-11-18 18:30:31,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:31,372 INFO L130 PetriNetUnfolder]: 70/1026 cut-off events. [2022-11-18 18:30:31,372 INFO L131 PetriNetUnfolder]: For 718/727 co-relation queries the response was YES. [2022-11-18 18:30:31,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1737 conditions, 1026 events. 70/1026 cut-off events. For 718/727 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6968 event pairs, 24 based on Foata normal form. 5/984 useless extension candidates. Maximal degree in co-relation 1504. Up to 53 conditions per place. [2022-11-18 18:30:31,380 INFO L137 encePairwiseOnDemand]: 161/174 looper letters, 45 selfloop transitions, 21 changer transitions 5/210 dead transitions. [2022-11-18 18:30:31,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 210 transitions, 998 flow [2022-11-18 18:30:31,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:30:31,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:30:31,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 782 transitions. [2022-11-18 18:30:31,383 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8988505747126436 [2022-11-18 18:30:31,383 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 782 transitions. [2022-11-18 18:30:31,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 782 transitions. [2022-11-18 18:30:31,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:31,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 782 transitions. [2022-11-18 18:30:31,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.4) internal successors, (782), 5 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:31,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:31,389 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:31,389 INFO L175 Difference]: Start difference. First operand has 185 places, 188 transitions, 759 flow. Second operand 5 states and 782 transitions. [2022-11-18 18:30:31,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 210 transitions, 998 flow [2022-11-18 18:30:31,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 210 transitions, 981 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:30:31,400 INFO L231 Difference]: Finished difference. Result has 191 places, 192 transitions, 870 flow [2022-11-18 18:30:31,400 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=870, PETRI_PLACES=191, PETRI_TRANSITIONS=192} [2022-11-18 18:30:31,402 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 34 predicate places. [2022-11-18 18:30:31,402 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 192 transitions, 870 flow [2022-11-18 18:30:31,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:31,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:31,403 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:31,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:30:31,404 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:31,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:31,404 INFO L85 PathProgramCache]: Analyzing trace with hash 621447778, now seen corresponding path program 1 times [2022-11-18 18:30:31,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:31,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642198478] [2022-11-18 18:30:31,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:31,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:31,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:31,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:31,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642198478] [2022-11-18 18:30:31,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642198478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:31,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:31,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:31,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534510099] [2022-11-18 18:30:31,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:31,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:31,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:31,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:31,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:31,727 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:30:31,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 192 transitions, 870 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:31,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:31,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:30:31,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:32,708 INFO L130 PetriNetUnfolder]: 334/1683 cut-off events. [2022-11-18 18:30:32,709 INFO L131 PetriNetUnfolder]: For 1157/1227 co-relation queries the response was YES. [2022-11-18 18:30:32,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3457 conditions, 1683 events. 334/1683 cut-off events. For 1157/1227 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 12932 event pairs, 180 based on Foata normal form. 1/1624 useless extension candidates. Maximal degree in co-relation 3100. Up to 622 conditions per place. [2022-11-18 18:30:32,721 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 98 selfloop transitions, 5 changer transitions 46/298 dead transitions. [2022-11-18 18:30:32,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 298 transitions, 1497 flow [2022-11-18 18:30:32,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 18:30:32,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 18:30:32,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3982 transitions. [2022-11-18 18:30:32,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7628352490421456 [2022-11-18 18:30:32,732 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3982 transitions. [2022-11-18 18:30:32,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3982 transitions. [2022-11-18 18:30:32,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:32,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3982 transitions. [2022-11-18 18:30:32,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.73333333333332) internal successors, (3982), 30 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:32,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:32,761 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:32,761 INFO L175 Difference]: Start difference. First operand has 191 places, 192 transitions, 870 flow. Second operand 30 states and 3982 transitions. [2022-11-18 18:30:32,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 298 transitions, 1497 flow [2022-11-18 18:30:32,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 298 transitions, 1483 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-18 18:30:32,776 INFO L231 Difference]: Finished difference. Result has 245 places, 196 transitions, 975 flow [2022-11-18 18:30:32,777 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=975, PETRI_PLACES=245, PETRI_TRANSITIONS=196} [2022-11-18 18:30:32,780 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 88 predicate places. [2022-11-18 18:30:32,780 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 196 transitions, 975 flow [2022-11-18 18:30:32,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:32,782 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:32,782 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:32,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:30:32,783 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:32,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:32,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1419663248, now seen corresponding path program 2 times [2022-11-18 18:30:32,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:32,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44946585] [2022-11-18 18:30:32,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:32,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:33,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:33,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44946585] [2022-11-18 18:30:33,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44946585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:33,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:33,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:33,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230130856] [2022-11-18 18:30:33,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:33,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:33,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:33,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:33,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:33,143 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:30:33,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 196 transitions, 975 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:33,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:33,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:30:33,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:34,051 INFO L130 PetriNetUnfolder]: 336/1641 cut-off events. [2022-11-18 18:30:34,051 INFO L131 PetriNetUnfolder]: For 6073/6143 co-relation queries the response was YES. [2022-11-18 18:30:34,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5438 conditions, 1641 events. 336/1641 cut-off events. For 6073/6143 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12468 event pairs, 208 based on Foata normal form. 1/1571 useless extension candidates. Maximal degree in co-relation 5213. Up to 715 conditions per place. [2022-11-18 18:30:34,070 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 70 selfloop transitions, 16 changer transitions 33/268 dead transitions. [2022-11-18 18:30:34,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 268 transitions, 1802 flow [2022-11-18 18:30:34,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 18:30:34,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-18 18:30:34,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3312 transitions. [2022-11-18 18:30:34,079 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7613793103448275 [2022-11-18 18:30:34,079 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3312 transitions. [2022-11-18 18:30:34,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3312 transitions. [2022-11-18 18:30:34,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:34,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3312 transitions. [2022-11-18 18:30:34,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.48) internal successors, (3312), 25 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:34,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:34,102 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:34,103 INFO L175 Difference]: Start difference. First operand has 245 places, 196 transitions, 975 flow. Second operand 25 states and 3312 transitions. [2022-11-18 18:30:34,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 268 transitions, 1802 flow [2022-11-18 18:30:34,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 268 transitions, 1663 flow, removed 69 selfloop flow, removed 13 redundant places. [2022-11-18 18:30:34,140 INFO L231 Difference]: Finished difference. Result has 255 places, 210 transitions, 1153 flow [2022-11-18 18:30:34,141 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1153, PETRI_PLACES=255, PETRI_TRANSITIONS=210} [2022-11-18 18:30:34,142 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 98 predicate places. [2022-11-18 18:30:34,142 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 210 transitions, 1153 flow [2022-11-18 18:30:34,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:34,143 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:34,144 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:34,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:30:34,144 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:34,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:34,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1072352020, now seen corresponding path program 3 times [2022-11-18 18:30:34,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:34,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487952647] [2022-11-18 18:30:34,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:34,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:34,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:34,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:34,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487952647] [2022-11-18 18:30:34,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487952647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:34,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:34,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:34,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184014057] [2022-11-18 18:30:34,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:34,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:34,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:34,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:34,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:34,475 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:30:34,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 210 transitions, 1153 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:34,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:34,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:30:34,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:35,503 INFO L130 PetriNetUnfolder]: 341/1707 cut-off events. [2022-11-18 18:30:35,504 INFO L131 PetriNetUnfolder]: For 8793/8866 co-relation queries the response was YES. [2022-11-18 18:30:35,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6325 conditions, 1707 events. 341/1707 cut-off events. For 8793/8866 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13165 event pairs, 206 based on Foata normal form. 1/1638 useless extension candidates. Maximal degree in co-relation 6090. Up to 685 conditions per place. [2022-11-18 18:30:35,531 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 95 selfloop transitions, 14 changer transitions 40/298 dead transitions. [2022-11-18 18:30:35,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 298 transitions, 2418 flow [2022-11-18 18:30:35,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 18:30:35,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-18 18:30:35,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3449 transitions. [2022-11-18 18:30:35,539 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7623784261715296 [2022-11-18 18:30:35,539 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3449 transitions. [2022-11-18 18:30:35,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3449 transitions. [2022-11-18 18:30:35,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:35,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3449 transitions. [2022-11-18 18:30:35,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.65384615384616) internal successors, (3449), 26 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:35,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:35,560 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:35,561 INFO L175 Difference]: Start difference. First operand has 255 places, 210 transitions, 1153 flow. Second operand 26 states and 3449 transitions. [2022-11-18 18:30:35,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 298 transitions, 2418 flow [2022-11-18 18:30:35,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 298 transitions, 2217 flow, removed 92 selfloop flow, removed 11 redundant places. [2022-11-18 18:30:35,649 INFO L231 Difference]: Finished difference. Result has 277 places, 221 transitions, 1333 flow [2022-11-18 18:30:35,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1333, PETRI_PLACES=277, PETRI_TRANSITIONS=221} [2022-11-18 18:30:35,651 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 120 predicate places. [2022-11-18 18:30:35,651 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 221 transitions, 1333 flow [2022-11-18 18:30:35,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:35,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:35,652 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:35,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:30:35,653 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:35,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:35,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1268884710, now seen corresponding path program 4 times [2022-11-18 18:30:35,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:35,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037219750] [2022-11-18 18:30:35,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:35,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:35,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:35,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:35,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037219750] [2022-11-18 18:30:35,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037219750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:35,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:35,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:35,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199798979] [2022-11-18 18:30:35,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:35,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:35,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:35,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:35,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:35,981 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:30:35,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 221 transitions, 1333 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:35,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:35,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:30:35,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:37,192 INFO L130 PetriNetUnfolder]: 337/1687 cut-off events. [2022-11-18 18:30:37,192 INFO L131 PetriNetUnfolder]: For 12694/12772 co-relation queries the response was YES. [2022-11-18 18:30:37,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7049 conditions, 1687 events. 337/1687 cut-off events. For 12694/12772 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 12986 event pairs, 185 based on Foata normal form. 1/1629 useless extension candidates. Maximal degree in co-relation 6801. Up to 623 conditions per place. [2022-11-18 18:30:37,222 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 151 selfloop transitions, 19 changer transitions 46/365 dead transitions. [2022-11-18 18:30:37,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 365 transitions, 3495 flow [2022-11-18 18:30:37,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 18:30:37,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 18:30:37,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4111 transitions. [2022-11-18 18:30:37,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7621431219873934 [2022-11-18 18:30:37,230 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4111 transitions. [2022-11-18 18:30:37,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4111 transitions. [2022-11-18 18:30:37,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:37,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4111 transitions. [2022-11-18 18:30:37,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.61290322580646) internal successors, (4111), 31 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:37,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:37,253 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:37,253 INFO L175 Difference]: Start difference. First operand has 277 places, 221 transitions, 1333 flow. Second operand 31 states and 4111 transitions. [2022-11-18 18:30:37,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 365 transitions, 3495 flow [2022-11-18 18:30:37,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 365 transitions, 3183 flow, removed 156 selfloop flow, removed 11 redundant places. [2022-11-18 18:30:37,321 INFO L231 Difference]: Finished difference. Result has 306 places, 226 transitions, 1467 flow [2022-11-18 18:30:37,321 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1249, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1467, PETRI_PLACES=306, PETRI_TRANSITIONS=226} [2022-11-18 18:30:37,322 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 149 predicate places. [2022-11-18 18:30:37,322 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 226 transitions, 1467 flow [2022-11-18 18:30:37,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:37,323 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:37,323 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:37,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:30:37,324 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:37,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:37,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1146862834, now seen corresponding path program 5 times [2022-11-18 18:30:37,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:37,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811058278] [2022-11-18 18:30:37,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:37,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:37,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:37,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:37,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811058278] [2022-11-18 18:30:37,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811058278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:37,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:37,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:37,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667581133] [2022-11-18 18:30:37,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:37,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:37,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:37,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:37,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:37,604 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:30:37,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 226 transitions, 1467 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:37,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:37,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:30:37,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:38,816 INFO L130 PetriNetUnfolder]: 357/1748 cut-off events. [2022-11-18 18:30:38,816 INFO L131 PetriNetUnfolder]: For 16514/16592 co-relation queries the response was YES. [2022-11-18 18:30:38,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7916 conditions, 1748 events. 357/1748 cut-off events. For 16514/16592 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13610 event pairs, 215 based on Foata normal form. 4/1682 useless extension candidates. Maximal degree in co-relation 7650. Up to 733 conditions per place. [2022-11-18 18:30:38,848 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 112 selfloop transitions, 27 changer transitions 41/329 dead transitions. [2022-11-18 18:30:38,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 329 transitions, 3129 flow [2022-11-18 18:30:38,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 18:30:38,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 18:30:38,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3707 transitions. [2022-11-18 18:30:38,857 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7608784893267652 [2022-11-18 18:30:38,857 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3707 transitions. [2022-11-18 18:30:38,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3707 transitions. [2022-11-18 18:30:38,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:38,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3707 transitions. [2022-11-18 18:30:38,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:38,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:38,880 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:38,880 INFO L175 Difference]: Start difference. First operand has 306 places, 226 transitions, 1467 flow. Second operand 28 states and 3707 transitions. [2022-11-18 18:30:38,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 329 transitions, 3129 flow [2022-11-18 18:30:39,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 329 transitions, 2952 flow, removed 87 selfloop flow, removed 20 redundant places. [2022-11-18 18:30:39,012 INFO L231 Difference]: Finished difference. Result has 312 places, 239 transitions, 1681 flow [2022-11-18 18:30:39,013 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1681, PETRI_PLACES=312, PETRI_TRANSITIONS=239} [2022-11-18 18:30:39,014 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 155 predicate places. [2022-11-18 18:30:39,014 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 239 transitions, 1681 flow [2022-11-18 18:30:39,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:39,015 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:39,015 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:39,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:30:39,016 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:39,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:39,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1172207344, now seen corresponding path program 6 times [2022-11-18 18:30:39,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:39,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761049752] [2022-11-18 18:30:39,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:39,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:39,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:39,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:39,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761049752] [2022-11-18 18:30:39,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761049752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:39,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:39,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:39,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459137566] [2022-11-18 18:30:39,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:39,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:39,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:39,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:39,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:39,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:30:39,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 239 transitions, 1681 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:39,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:39,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:30:39,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:40,538 INFO L130 PetriNetUnfolder]: 353/1746 cut-off events. [2022-11-18 18:30:40,539 INFO L131 PetriNetUnfolder]: For 13553/13636 co-relation queries the response was YES. [2022-11-18 18:30:40,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7643 conditions, 1746 events. 353/1746 cut-off events. For 13553/13636 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 13594 event pairs, 221 based on Foata normal form. 4/1678 useless extension candidates. Maximal degree in co-relation 7375. Up to 729 conditions per place. [2022-11-18 18:30:40,569 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 98 selfloop transitions, 27 changer transitions 42/316 dead transitions. [2022-11-18 18:30:40,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 316 transitions, 3088 flow [2022-11-18 18:30:40,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 18:30:40,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-18 18:30:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3580 transitions. [2022-11-18 18:30:40,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7620263942103023 [2022-11-18 18:30:40,577 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3580 transitions. [2022-11-18 18:30:40,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3580 transitions. [2022-11-18 18:30:40,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:40,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3580 transitions. [2022-11-18 18:30:40,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.59259259259258) internal successors, (3580), 27 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:40,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:40,594 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:40,595 INFO L175 Difference]: Start difference. First operand has 312 places, 239 transitions, 1681 flow. Second operand 27 states and 3580 transitions. [2022-11-18 18:30:40,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 316 transitions, 3088 flow [2022-11-18 18:30:40,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 316 transitions, 2884 flow, removed 93 selfloop flow, removed 19 redundant places. [2022-11-18 18:30:40,687 INFO L231 Difference]: Finished difference. Result has 321 places, 243 transitions, 1826 flow [2022-11-18 18:30:40,688 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1826, PETRI_PLACES=321, PETRI_TRANSITIONS=243} [2022-11-18 18:30:40,688 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 164 predicate places. [2022-11-18 18:30:40,688 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 243 transitions, 1826 flow [2022-11-18 18:30:40,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:40,689 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:40,689 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:40,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:30:40,690 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:40,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:40,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1441508686, now seen corresponding path program 7 times [2022-11-18 18:30:40,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:40,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645522399] [2022-11-18 18:30:40,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:40,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:40,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:40,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:40,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645522399] [2022-11-18 18:30:40,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645522399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:40,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:40,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:40,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202226343] [2022-11-18 18:30:40,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:40,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:40,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:40,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:40,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:40,976 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:30:40,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 243 transitions, 1826 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:40,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:40,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:30:40,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:41,869 INFO L130 PetriNetUnfolder]: 343/1695 cut-off events. [2022-11-18 18:30:41,870 INFO L131 PetriNetUnfolder]: For 13651/13736 co-relation queries the response was YES. [2022-11-18 18:30:41,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7519 conditions, 1695 events. 343/1695 cut-off events. For 13651/13736 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 13198 event pairs, 219 based on Foata normal form. 7/1626 useless extension candidates. Maximal degree in co-relation 7247. Up to 747 conditions per place. [2022-11-18 18:30:41,905 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 34 changer transitions 29/313 dead transitions. [2022-11-18 18:30:41,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 313 transitions, 3132 flow [2022-11-18 18:30:41,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:30:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 18:30:41,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2529 transitions. [2022-11-18 18:30:41,910 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.76497277676951 [2022-11-18 18:30:41,910 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2529 transitions. [2022-11-18 18:30:41,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2529 transitions. [2022-11-18 18:30:41,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:41,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2529 transitions. [2022-11-18 18:30:41,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.10526315789474) internal successors, (2529), 19 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:41,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:41,923 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:41,923 INFO L175 Difference]: Start difference. First operand has 321 places, 243 transitions, 1826 flow. Second operand 19 states and 2529 transitions. [2022-11-18 18:30:41,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 313 transitions, 3132 flow [2022-11-18 18:30:42,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 313 transitions, 2927 flow, removed 82 selfloop flow, removed 17 redundant places. [2022-11-18 18:30:42,032 INFO L231 Difference]: Finished difference. Result has 315 places, 252 transitions, 1953 flow [2022-11-18 18:30:42,033 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1715, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1953, PETRI_PLACES=315, PETRI_TRANSITIONS=252} [2022-11-18 18:30:42,033 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 158 predicate places. [2022-11-18 18:30:42,033 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 252 transitions, 1953 flow [2022-11-18 18:30:42,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:42,034 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:42,034 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:42,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 18:30:42,035 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:42,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:42,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1154961400, now seen corresponding path program 8 times [2022-11-18 18:30:42,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:42,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104736434] [2022-11-18 18:30:42,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:42,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:42,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:42,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:42,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104736434] [2022-11-18 18:30:42,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104736434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:42,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:42,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:42,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614251488] [2022-11-18 18:30:42,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:42,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:42,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:42,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:42,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:42,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:30:42,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 252 transitions, 1953 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:42,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:42,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:30:42,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:43,357 INFO L130 PetriNetUnfolder]: 348/1761 cut-off events. [2022-11-18 18:30:43,357 INFO L131 PetriNetUnfolder]: For 12967/13074 co-relation queries the response was YES. [2022-11-18 18:30:43,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7474 conditions, 1761 events. 348/1761 cut-off events. For 12967/13074 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 13712 event pairs, 212 based on Foata normal form. 15/1704 useless extension candidates. Maximal degree in co-relation 7205. Up to 735 conditions per place. [2022-11-18 18:30:43,387 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 32 changer transitions 39/327 dead transitions. [2022-11-18 18:30:43,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 327 transitions, 3307 flow [2022-11-18 18:30:43,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 18:30:43,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 18:30:43,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3183 transitions. [2022-11-18 18:30:43,396 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7622126436781609 [2022-11-18 18:30:43,396 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3183 transitions. [2022-11-18 18:30:43,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3183 transitions. [2022-11-18 18:30:43,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:43,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3183 transitions. [2022-11-18 18:30:43,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.625) internal successors, (3183), 24 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:43,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:43,416 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:43,417 INFO L175 Difference]: Start difference. First operand has 315 places, 252 transitions, 1953 flow. Second operand 24 states and 3183 transitions. [2022-11-18 18:30:43,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 327 transitions, 3307 flow [2022-11-18 18:30:43,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 327 transitions, 3079 flow, removed 68 selfloop flow, removed 13 redundant places. [2022-11-18 18:30:43,537 INFO L231 Difference]: Finished difference. Result has 331 places, 252 transitions, 1937 flow [2022-11-18 18:30:43,539 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1821, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1937, PETRI_PLACES=331, PETRI_TRANSITIONS=252} [2022-11-18 18:30:43,539 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 174 predicate places. [2022-11-18 18:30:43,540 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 252 transitions, 1937 flow [2022-11-18 18:30:43,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:43,540 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:43,541 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:43,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 18:30:43,541 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:43,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:43,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1787721774, now seen corresponding path program 9 times [2022-11-18 18:30:43,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:43,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566766889] [2022-11-18 18:30:43,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:43,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:43,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:43,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566766889] [2022-11-18 18:30:43,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566766889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:43,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:43,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:43,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255124418] [2022-11-18 18:30:43,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:43,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:43,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:43,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:43,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:43,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:30:43,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 252 transitions, 1937 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:43,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:43,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:30:43,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:44,851 INFO L130 PetriNetUnfolder]: 334/1702 cut-off events. [2022-11-18 18:30:44,851 INFO L131 PetriNetUnfolder]: For 12209/12312 co-relation queries the response was YES. [2022-11-18 18:30:44,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7151 conditions, 1702 events. 334/1702 cut-off events. For 12209/12312 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13236 event pairs, 212 based on Foata normal form. 9/1638 useless extension candidates. Maximal degree in co-relation 6981. Up to 729 conditions per place. [2022-11-18 18:30:44,880 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 16 changer transitions 36/298 dead transitions. [2022-11-18 18:30:44,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 298 transitions, 2820 flow [2022-11-18 18:30:44,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:30:44,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 18:30:44,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2651 transitions. [2022-11-18 18:30:44,885 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7617816091954023 [2022-11-18 18:30:44,885 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2651 transitions. [2022-11-18 18:30:44,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2651 transitions. [2022-11-18 18:30:44,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:44,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2651 transitions. [2022-11-18 18:30:44,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.55) internal successors, (2651), 20 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:44,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:44,897 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:44,898 INFO L175 Difference]: Start difference. First operand has 331 places, 252 transitions, 1937 flow. Second operand 20 states and 2651 transitions. [2022-11-18 18:30:44,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 298 transitions, 2820 flow [2022-11-18 18:30:44,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 298 transitions, 2681 flow, removed 46 selfloop flow, removed 18 redundant places. [2022-11-18 18:30:44,986 INFO L231 Difference]: Finished difference. Result has 324 places, 231 transitions, 1596 flow [2022-11-18 18:30:44,986 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1596, PETRI_PLACES=324, PETRI_TRANSITIONS=231} [2022-11-18 18:30:44,987 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 167 predicate places. [2022-11-18 18:30:44,987 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 231 transitions, 1596 flow [2022-11-18 18:30:44,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:44,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:44,988 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:44,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 18:30:44,989 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:44,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:44,989 INFO L85 PathProgramCache]: Analyzing trace with hash -713674834, now seen corresponding path program 10 times [2022-11-18 18:30:44,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:44,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543352437] [2022-11-18 18:30:44,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:44,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:45,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:45,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543352437] [2022-11-18 18:30:45,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543352437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:45,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:45,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:45,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564707253] [2022-11-18 18:30:45,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:45,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:45,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:45,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:45,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:45,242 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:30:45,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 231 transitions, 1596 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:45,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:45,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:30:45,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:46,136 INFO L130 PetriNetUnfolder]: 330/1665 cut-off events. [2022-11-18 18:30:46,136 INFO L131 PetriNetUnfolder]: For 11560/11640 co-relation queries the response was YES. [2022-11-18 18:30:46,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7106 conditions, 1665 events. 330/1665 cut-off events. For 11560/11640 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12855 event pairs, 215 based on Foata normal form. 3/1596 useless extension candidates. Maximal degree in co-relation 7010. Up to 727 conditions per place. [2022-11-18 18:30:46,168 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 83 selfloop transitions, 28 changer transitions 27/287 dead transitions. [2022-11-18 18:30:46,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 287 transitions, 2679 flow [2022-11-18 18:30:46,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:30:46,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 18:30:46,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2919 transitions. [2022-11-18 18:30:46,173 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.762539184952978 [2022-11-18 18:30:46,174 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2919 transitions. [2022-11-18 18:30:46,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2919 transitions. [2022-11-18 18:30:46,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:46,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2919 transitions. [2022-11-18 18:30:46,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.6818181818182) internal successors, (2919), 22 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:46,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:46,186 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:46,187 INFO L175 Difference]: Start difference. First operand has 324 places, 231 transitions, 1596 flow. Second operand 22 states and 2919 transitions. [2022-11-18 18:30:46,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 287 transitions, 2679 flow [2022-11-18 18:30:46,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 287 transitions, 2452 flow, removed 38 selfloop flow, removed 22 redundant places. [2022-11-18 18:30:46,272 INFO L231 Difference]: Finished difference. Result has 304 places, 243 transitions, 1765 flow [2022-11-18 18:30:46,273 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1765, PETRI_PLACES=304, PETRI_TRANSITIONS=243} [2022-11-18 18:30:46,273 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 147 predicate places. [2022-11-18 18:30:46,274 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 243 transitions, 1765 flow [2022-11-18 18:30:46,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:46,274 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:46,275 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:46,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 18:30:46,275 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:46,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:46,276 INFO L85 PathProgramCache]: Analyzing trace with hash -983564584, now seen corresponding path program 11 times [2022-11-18 18:30:46,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:46,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397146681] [2022-11-18 18:30:46,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:46,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:46,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:46,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397146681] [2022-11-18 18:30:46,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397146681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:46,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:46,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:46,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796021030] [2022-11-18 18:30:46,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:46,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:46,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:46,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:46,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:46,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:30:46,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 243 transitions, 1765 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:46,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:46,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:30:46,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:47,469 INFO L130 PetriNetUnfolder]: 343/1725 cut-off events. [2022-11-18 18:30:47,469 INFO L131 PetriNetUnfolder]: For 11496/11588 co-relation queries the response was YES. [2022-11-18 18:30:47,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7173 conditions, 1725 events. 343/1725 cut-off events. For 11496/11588 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13325 event pairs, 235 based on Foata normal form. 3/1651 useless extension candidates. Maximal degree in co-relation 7083. Up to 729 conditions per place. [2022-11-18 18:30:47,504 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 89 selfloop transitions, 36 changer transitions 27/301 dead transitions. [2022-11-18 18:30:47,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 301 transitions, 2871 flow [2022-11-18 18:30:47,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:30:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 18:30:47,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2662 transitions. [2022-11-18 18:30:47,510 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7649425287356322 [2022-11-18 18:30:47,510 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2662 transitions. [2022-11-18 18:30:47,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2662 transitions. [2022-11-18 18:30:47,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:47,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2662 transitions. [2022-11-18 18:30:47,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.1) internal successors, (2662), 20 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:47,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:47,523 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:47,523 INFO L175 Difference]: Start difference. First operand has 304 places, 243 transitions, 1765 flow. Second operand 20 states and 2662 transitions. [2022-11-18 18:30:47,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 301 transitions, 2871 flow [2022-11-18 18:30:47,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 301 transitions, 2775 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-18 18:30:47,613 INFO L231 Difference]: Finished difference. Result has 320 places, 255 transitions, 2015 flow [2022-11-18 18:30:47,614 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1707, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2015, PETRI_PLACES=320, PETRI_TRANSITIONS=255} [2022-11-18 18:30:47,614 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 163 predicate places. [2022-11-18 18:30:47,615 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 255 transitions, 2015 flow [2022-11-18 18:30:47,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:47,615 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:47,616 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:47,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 18:30:47,616 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:47,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:47,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1177113048, now seen corresponding path program 12 times [2022-11-18 18:30:47,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:47,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176246431] [2022-11-18 18:30:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:47,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:47,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:47,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176246431] [2022-11-18 18:30:47,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176246431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:47,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:47,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:47,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516622113] [2022-11-18 18:30:47,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:47,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:47,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:47,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:47,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:47,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:30:47,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 255 transitions, 2015 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:47,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:47,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:30:47,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:48,925 INFO L130 PetriNetUnfolder]: 332/1683 cut-off events. [2022-11-18 18:30:48,925 INFO L131 PetriNetUnfolder]: For 11575/11655 co-relation queries the response was YES. [2022-11-18 18:30:48,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7188 conditions, 1683 events. 332/1683 cut-off events. For 11575/11655 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13028 event pairs, 216 based on Foata normal form. 3/1613 useless extension candidates. Maximal degree in co-relation 7089. Up to 727 conditions per place. [2022-11-18 18:30:48,953 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 35 changer transitions 29/306 dead transitions. [2022-11-18 18:30:48,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 306 transitions, 3114 flow [2022-11-18 18:30:48,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:30:48,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:30:48,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2022-11-18 18:30:48,958 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2022-11-18 18:30:48,958 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2022-11-18 18:30:48,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2022-11-18 18:30:48,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:48,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2022-11-18 18:30:48,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:48,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:48,970 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:48,971 INFO L175 Difference]: Start difference. First operand has 320 places, 255 transitions, 2015 flow. Second operand 21 states and 2792 transitions. [2022-11-18 18:30:48,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 306 transitions, 3114 flow [2022-11-18 18:30:49,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 306 transitions, 3000 flow, removed 34 selfloop flow, removed 8 redundant places. [2022-11-18 18:30:49,065 INFO L231 Difference]: Finished difference. Result has 335 places, 262 transitions, 2194 flow [2022-11-18 18:30:49,066 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1938, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2194, PETRI_PLACES=335, PETRI_TRANSITIONS=262} [2022-11-18 18:30:49,066 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 178 predicate places. [2022-11-18 18:30:49,067 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 262 transitions, 2194 flow [2022-11-18 18:30:49,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:49,067 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:49,068 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:49,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 18:30:49,068 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:49,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:49,069 INFO L85 PathProgramCache]: Analyzing trace with hash 681768476, now seen corresponding path program 13 times [2022-11-18 18:30:49,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:49,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253453666] [2022-11-18 18:30:49,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:49,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:49,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:49,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:49,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253453666] [2022-11-18 18:30:49,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253453666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:49,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:49,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:49,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138855288] [2022-11-18 18:30:49,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:49,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:49,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:49,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:49,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:49,371 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:30:49,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 262 transitions, 2194 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:49,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:49,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:30:49,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:50,369 INFO L130 PetriNetUnfolder]: 339/1728 cut-off events. [2022-11-18 18:30:50,369 INFO L131 PetriNetUnfolder]: For 12231/12310 co-relation queries the response was YES. [2022-11-18 18:30:50,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7417 conditions, 1728 events. 339/1728 cut-off events. For 12231/12310 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 13485 event pairs, 215 based on Foata normal form. 3/1659 useless extension candidates. Maximal degree in co-relation 7312. Up to 729 conditions per place. [2022-11-18 18:30:50,400 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 39 changer transitions 38/323 dead transitions. [2022-11-18 18:30:50,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 323 transitions, 3371 flow [2022-11-18 18:30:50,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 18:30:50,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 18:30:50,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3187 transitions. [2022-11-18 18:30:50,406 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7631704980842912 [2022-11-18 18:30:50,406 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3187 transitions. [2022-11-18 18:30:50,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3187 transitions. [2022-11-18 18:30:50,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:50,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3187 transitions. [2022-11-18 18:30:50,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.79166666666666) internal successors, (3187), 24 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:50,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:50,418 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:50,418 INFO L175 Difference]: Start difference. First operand has 335 places, 262 transitions, 2194 flow. Second operand 24 states and 3187 transitions. [2022-11-18 18:30:50,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 323 transitions, 3371 flow [2022-11-18 18:30:50,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 323 transitions, 3251 flow, removed 34 selfloop flow, removed 7 redundant places. [2022-11-18 18:30:50,521 INFO L231 Difference]: Finished difference. Result has 356 places, 267 transitions, 2333 flow [2022-11-18 18:30:50,522 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2108, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2333, PETRI_PLACES=356, PETRI_TRANSITIONS=267} [2022-11-18 18:30:50,522 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 199 predicate places. [2022-11-18 18:30:50,522 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 267 transitions, 2333 flow [2022-11-18 18:30:50,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:50,523 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:50,523 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:50,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 18:30:50,525 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:50,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:50,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1410318092, now seen corresponding path program 14 times [2022-11-18 18:30:50,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:50,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259016095] [2022-11-18 18:30:50,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:50,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:50,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:50,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:50,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259016095] [2022-11-18 18:30:50,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259016095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:50,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:50,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:50,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991205034] [2022-11-18 18:30:50,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:50,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:50,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:50,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:50,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:50,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:30:50,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 267 transitions, 2333 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:50,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:50,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:30:50,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:51,912 INFO L130 PetriNetUnfolder]: 342/1753 cut-off events. [2022-11-18 18:30:51,913 INFO L131 PetriNetUnfolder]: For 13342/13432 co-relation queries the response was YES. [2022-11-18 18:30:51,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7541 conditions, 1753 events. 342/1753 cut-off events. For 13342/13432 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 13731 event pairs, 230 based on Foata normal form. 3/1679 useless extension candidates. Maximal degree in co-relation 7427. Up to 727 conditions per place. [2022-11-18 18:30:51,955 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 34 changer transitions 43/327 dead transitions. [2022-11-18 18:30:51,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 327 transitions, 3557 flow [2022-11-18 18:30:51,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 18:30:51,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-18 18:30:51,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3056 transitions. [2022-11-18 18:30:51,961 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7636181909045477 [2022-11-18 18:30:51,961 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3056 transitions. [2022-11-18 18:30:51,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3056 transitions. [2022-11-18 18:30:51,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:51,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3056 transitions. [2022-11-18 18:30:51,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.8695652173913) internal successors, (3056), 23 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:51,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:51,975 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:51,975 INFO L175 Difference]: Start difference. First operand has 356 places, 267 transitions, 2333 flow. Second operand 23 states and 3056 transitions. [2022-11-18 18:30:51,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 327 transitions, 3557 flow [2022-11-18 18:30:52,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 327 transitions, 3400 flow, removed 51 selfloop flow, removed 15 redundant places. [2022-11-18 18:30:52,109 INFO L231 Difference]: Finished difference. Result has 361 places, 266 transitions, 2336 flow [2022-11-18 18:30:52,110 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2233, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2336, PETRI_PLACES=361, PETRI_TRANSITIONS=266} [2022-11-18 18:30:52,110 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 204 predicate places. [2022-11-18 18:30:52,111 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 266 transitions, 2336 flow [2022-11-18 18:30:52,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:52,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:52,112 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:52,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 18:30:52,113 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:52,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:52,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2014712836, now seen corresponding path program 15 times [2022-11-18 18:30:52,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:52,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71620468] [2022-11-18 18:30:52,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:52,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:52,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:52,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71620468] [2022-11-18 18:30:52,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71620468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:52,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:52,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:52,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168583076] [2022-11-18 18:30:52,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:52,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:52,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:52,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:52,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:52,401 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:30:52,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 266 transitions, 2336 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:52,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:52,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:30:52,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:53,331 INFO L130 PetriNetUnfolder]: 321/1661 cut-off events. [2022-11-18 18:30:53,331 INFO L131 PetriNetUnfolder]: For 12302/12381 co-relation queries the response was YES. [2022-11-18 18:30:53,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7145 conditions, 1661 events. 321/1661 cut-off events. For 12302/12381 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12859 event pairs, 214 based on Foata normal form. 3/1591 useless extension candidates. Maximal degree in co-relation 7030. Up to 723 conditions per place. [2022-11-18 18:30:53,354 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 89 selfloop transitions, 23 changer transitions 36/297 dead transitions. [2022-11-18 18:30:53,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 297 transitions, 3013 flow [2022-11-18 18:30:53,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:30:53,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 18:30:53,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2658 transitions. [2022-11-18 18:30:53,366 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7637931034482759 [2022-11-18 18:30:53,367 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2658 transitions. [2022-11-18 18:30:53,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2658 transitions. [2022-11-18 18:30:53,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:53,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2658 transitions. [2022-11-18 18:30:53,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.9) internal successors, (2658), 20 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:53,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:53,377 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:53,378 INFO L175 Difference]: Start difference. First operand has 361 places, 266 transitions, 2336 flow. Second operand 20 states and 2658 transitions. [2022-11-18 18:30:53,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 297 transitions, 3013 flow [2022-11-18 18:30:53,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 297 transitions, 2829 flow, removed 38 selfloop flow, removed 21 redundant places. [2022-11-18 18:30:53,489 INFO L231 Difference]: Finished difference. Result has 352 places, 248 transitions, 1952 flow [2022-11-18 18:30:53,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2181, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1952, PETRI_PLACES=352, PETRI_TRANSITIONS=248} [2022-11-18 18:30:53,490 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 195 predicate places. [2022-11-18 18:30:53,490 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 248 transitions, 1952 flow [2022-11-18 18:30:53,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:53,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:53,491 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:53,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 18:30:53,491 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:53,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:53,492 INFO L85 PathProgramCache]: Analyzing trace with hash -244641532, now seen corresponding path program 16 times [2022-11-18 18:30:53,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:53,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253301346] [2022-11-18 18:30:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:53,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:53,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:53,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:53,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253301346] [2022-11-18 18:30:53,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253301346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:53,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:53,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:53,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33891454] [2022-11-18 18:30:53,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:53,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:53,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:53,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:53,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:53,758 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:30:53,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 248 transitions, 1952 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:53,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:53,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:30:53,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:54,497 INFO L130 PetriNetUnfolder]: 316/1632 cut-off events. [2022-11-18 18:30:54,497 INFO L131 PetriNetUnfolder]: For 11527/11606 co-relation queries the response was YES. [2022-11-18 18:30:54,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6877 conditions, 1632 events. 316/1632 cut-off events. For 11527/11606 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12612 event pairs, 215 based on Foata normal form. 3/1561 useless extension candidates. Maximal degree in co-relation 6770. Up to 723 conditions per place. [2022-11-18 18:30:54,516 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 82 selfloop transitions, 19 changer transitions 34/284 dead transitions. [2022-11-18 18:30:54,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 284 transitions, 2682 flow [2022-11-18 18:30:54,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:30:54,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 18:30:54,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2656 transitions. [2022-11-18 18:30:54,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2022-11-18 18:30:54,526 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2656 transitions. [2022-11-18 18:30:54,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2656 transitions. [2022-11-18 18:30:54,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:54,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2656 transitions. [2022-11-18 18:30:54,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.8) internal successors, (2656), 20 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:54,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:54,540 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:54,541 INFO L175 Difference]: Start difference. First operand has 352 places, 248 transitions, 1952 flow. Second operand 20 states and 2656 transitions. [2022-11-18 18:30:54,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 284 transitions, 2682 flow [2022-11-18 18:30:54,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 284 transitions, 2500 flow, removed 24 selfloop flow, removed 22 redundant places. [2022-11-18 18:30:54,678 INFO L231 Difference]: Finished difference. Result has 332 places, 237 transitions, 1700 flow [2022-11-18 18:30:54,679 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1700, PETRI_PLACES=332, PETRI_TRANSITIONS=237} [2022-11-18 18:30:54,680 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 175 predicate places. [2022-11-18 18:30:54,680 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 237 transitions, 1700 flow [2022-11-18 18:30:54,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:54,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:54,681 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:54,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 18:30:54,681 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:54,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:54,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2123226230, now seen corresponding path program 17 times [2022-11-18 18:30:54,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:54,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276867386] [2022-11-18 18:30:54,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:54,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:54,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:54,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:54,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276867386] [2022-11-18 18:30:54,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276867386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:54,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:54,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:54,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922670126] [2022-11-18 18:30:54,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:54,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:54,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:54,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:54,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:54,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:30:54,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 237 transitions, 1700 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:54,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:54,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:30:54,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:55,794 INFO L130 PetriNetUnfolder]: 310/1630 cut-off events. [2022-11-18 18:30:55,795 INFO L131 PetriNetUnfolder]: For 10852/10942 co-relation queries the response was YES. [2022-11-18 18:30:55,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6556 conditions, 1630 events. 310/1630 cut-off events. For 10852/10942 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 12481 event pairs, 227 based on Foata normal form. 3/1559 useless extension candidates. Maximal degree in co-relation 6455. Up to 708 conditions per place. [2022-11-18 18:30:55,824 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 72 selfloop transitions, 4 changer transitions 38/263 dead transitions. [2022-11-18 18:30:55,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 263 transitions, 2218 flow [2022-11-18 18:30:55,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:30:55,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 18:30:55,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2516 transitions. [2022-11-18 18:30:55,829 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7610405323653963 [2022-11-18 18:30:55,829 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2516 transitions. [2022-11-18 18:30:55,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2516 transitions. [2022-11-18 18:30:55,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:55,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2516 transitions. [2022-11-18 18:30:55,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 132.42105263157896) internal successors, (2516), 19 states have internal predecessors, (2516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:55,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:55,838 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:55,838 INFO L175 Difference]: Start difference. First operand has 332 places, 237 transitions, 1700 flow. Second operand 19 states and 2516 transitions. [2022-11-18 18:30:55,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 263 transitions, 2218 flow [2022-11-18 18:30:55,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 263 transitions, 2094 flow, removed 24 selfloop flow, removed 23 redundant places. [2022-11-18 18:30:55,929 INFO L231 Difference]: Finished difference. Result has 313 places, 212 transitions, 1279 flow [2022-11-18 18:30:55,929 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1279, PETRI_PLACES=313, PETRI_TRANSITIONS=212} [2022-11-18 18:30:55,930 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 156 predicate places. [2022-11-18 18:30:55,931 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 212 transitions, 1279 flow [2022-11-18 18:30:55,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:55,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:55,932 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:55,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 18:30:55,932 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:55,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:55,933 INFO L85 PathProgramCache]: Analyzing trace with hash -977463820, now seen corresponding path program 18 times [2022-11-18 18:30:55,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:55,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229689786] [2022-11-18 18:30:55,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:55,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:56,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:56,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:56,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229689786] [2022-11-18 18:30:56,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229689786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:56,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:56,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:56,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092625986] [2022-11-18 18:30:56,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:56,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:56,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:56,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:56,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:56,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:30:56,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 212 transitions, 1279 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:56,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:56,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:30:56,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:57,311 INFO L130 PetriNetUnfolder]: 318/1642 cut-off events. [2022-11-18 18:30:57,312 INFO L131 PetriNetUnfolder]: For 11069/11144 co-relation queries the response was YES. [2022-11-18 18:30:57,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6701 conditions, 1642 events. 318/1642 cut-off events. For 11069/11144 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12495 event pairs, 196 based on Foata normal form. 1/1580 useless extension candidates. Maximal degree in co-relation 6610. Up to 676 conditions per place. [2022-11-18 18:30:57,327 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 23 changer transitions 37/299 dead transitions. [2022-11-18 18:30:57,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 299 transitions, 2676 flow [2022-11-18 18:30:57,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 18:30:57,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 18:30:57,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3703 transitions. [2022-11-18 18:30:57,332 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2022-11-18 18:30:57,332 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3703 transitions. [2022-11-18 18:30:57,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3703 transitions. [2022-11-18 18:30:57,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:57,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3703 transitions. [2022-11-18 18:30:57,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.25) internal successors, (3703), 28 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:57,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:57,346 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:57,346 INFO L175 Difference]: Start difference. First operand has 313 places, 212 transitions, 1279 flow. Second operand 28 states and 3703 transitions. [2022-11-18 18:30:57,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 299 transitions, 2676 flow [2022-11-18 18:30:57,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 299 transitions, 2514 flow, removed 36 selfloop flow, removed 19 redundant places. [2022-11-18 18:30:57,414 INFO L231 Difference]: Finished difference. Result has 301 places, 226 transitions, 1509 flow [2022-11-18 18:30:57,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1509, PETRI_PLACES=301, PETRI_TRANSITIONS=226} [2022-11-18 18:30:57,415 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 144 predicate places. [2022-11-18 18:30:57,415 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 226 transitions, 1509 flow [2022-11-18 18:30:57,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:57,416 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:57,416 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:57,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 18:30:57,417 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:57,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:57,417 INFO L85 PathProgramCache]: Analyzing trace with hash 2045254900, now seen corresponding path program 19 times [2022-11-18 18:30:57,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:57,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283046645] [2022-11-18 18:30:57,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:57,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:57,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:57,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283046645] [2022-11-18 18:30:57,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283046645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:57,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:57,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:57,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346847110] [2022-11-18 18:30:57,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:57,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:57,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:57,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:57,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:57,713 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:30:57,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 226 transitions, 1509 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:57,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:57,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:30:57,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:58,780 INFO L130 PetriNetUnfolder]: 334/1672 cut-off events. [2022-11-18 18:30:58,780 INFO L131 PetriNetUnfolder]: For 11793/11868 co-relation queries the response was YES. [2022-11-18 18:30:58,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7142 conditions, 1672 events. 334/1672 cut-off events. For 11793/11868 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12725 event pairs, 214 based on Foata normal form. 1/1603 useless extension candidates. Maximal degree in co-relation 7048. Up to 682 conditions per place. [2022-11-18 18:30:58,798 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 82 selfloop transitions, 33 changer transitions 35/299 dead transitions. [2022-11-18 18:30:58,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 299 transitions, 2903 flow [2022-11-18 18:30:58,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 18:30:58,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-18 18:30:58,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3446 transitions. [2022-11-18 18:30:58,804 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7617152961980548 [2022-11-18 18:30:58,804 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3446 transitions. [2022-11-18 18:30:58,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3446 transitions. [2022-11-18 18:30:58,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:58,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3446 transitions. [2022-11-18 18:30:58,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.53846153846155) internal successors, (3446), 26 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:58,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:58,818 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:58,818 INFO L175 Difference]: Start difference. First operand has 301 places, 226 transitions, 1509 flow. Second operand 26 states and 3446 transitions. [2022-11-18 18:30:58,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 299 transitions, 2903 flow [2022-11-18 18:30:58,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 299 transitions, 2719 flow, removed 84 selfloop flow, removed 13 redundant places. [2022-11-18 18:30:58,871 INFO L231 Difference]: Finished difference. Result has 316 places, 240 transitions, 1801 flow [2022-11-18 18:30:58,871 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1447, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1801, PETRI_PLACES=316, PETRI_TRANSITIONS=240} [2022-11-18 18:30:58,872 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 159 predicate places. [2022-11-18 18:30:58,872 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 240 transitions, 1801 flow [2022-11-18 18:30:58,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:58,873 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:58,873 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:58,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 18:30:58,873 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:30:58,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:58,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1476599222, now seen corresponding path program 20 times [2022-11-18 18:30:58,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:58,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340430021] [2022-11-18 18:30:58,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:58,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:59,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:59,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:59,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340430021] [2022-11-18 18:30:59,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340430021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:59,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:59,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:59,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341747849] [2022-11-18 18:30:59,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:59,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:59,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:59,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:59,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:59,202 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:30:59,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 240 transitions, 1801 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:59,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:59,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:30:59,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:00,201 INFO L130 PetriNetUnfolder]: 330/1666 cut-off events. [2022-11-18 18:31:00,201 INFO L131 PetriNetUnfolder]: For 13499/13574 co-relation queries the response was YES. [2022-11-18 18:31:00,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7404 conditions, 1666 events. 330/1666 cut-off events. For 13499/13574 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12715 event pairs, 204 based on Foata normal form. 1/1600 useless extension candidates. Maximal degree in co-relation 7301. Up to 680 conditions per place. [2022-11-18 18:31:00,217 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 95 selfloop transitions, 32 changer transitions 37/313 dead transitions. [2022-11-18 18:31:00,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 313 transitions, 3356 flow [2022-11-18 18:31:00,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 18:31:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-18 18:31:00,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3575 transitions. [2022-11-18 18:31:00,221 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7609621115368241 [2022-11-18 18:31:00,221 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3575 transitions. [2022-11-18 18:31:00,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3575 transitions. [2022-11-18 18:31:00,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:00,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3575 transitions. [2022-11-18 18:31:00,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.40740740740742) internal successors, (3575), 27 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:00,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:00,234 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:00,234 INFO L175 Difference]: Start difference. First operand has 316 places, 240 transitions, 1801 flow. Second operand 27 states and 3575 transitions. [2022-11-18 18:31:00,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 313 transitions, 3356 flow [2022-11-18 18:31:00,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 313 transitions, 3044 flow, removed 136 selfloop flow, removed 16 redundant places. [2022-11-18 18:31:00,322 INFO L231 Difference]: Finished difference. Result has 330 places, 247 transitions, 1966 flow [2022-11-18 18:31:00,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1966, PETRI_PLACES=330, PETRI_TRANSITIONS=247} [2022-11-18 18:31:00,324 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 173 predicate places. [2022-11-18 18:31:00,324 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 247 transitions, 1966 flow [2022-11-18 18:31:00,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:00,324 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:00,325 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:00,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 18:31:00,325 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:00,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:00,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1694182008, now seen corresponding path program 21 times [2022-11-18 18:31:00,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:00,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154181750] [2022-11-18 18:31:00,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:00,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:00,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:00,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154181750] [2022-11-18 18:31:00,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154181750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:00,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:00,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:00,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749266341] [2022-11-18 18:31:00,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:00,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:00,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:00,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:00,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:00,647 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:00,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 247 transitions, 1966 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:00,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:00,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:00,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:01,466 INFO L130 PetriNetUnfolder]: 323/1640 cut-off events. [2022-11-18 18:31:01,466 INFO L131 PetriNetUnfolder]: For 13216/13291 co-relation queries the response was YES. [2022-11-18 18:31:01,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7271 conditions, 1640 events. 323/1640 cut-off events. For 13216/13291 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12513 event pairs, 196 based on Foata normal form. 1/1577 useless extension candidates. Maximal degree in co-relation 7162. Up to 682 conditions per place. [2022-11-18 18:31:01,485 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 95 selfloop transitions, 36 changer transitions 30/310 dead transitions. [2022-11-18 18:31:01,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 310 transitions, 3185 flow [2022-11-18 18:31:01,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:31:01,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 18:31:01,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2920 transitions. [2022-11-18 18:31:01,489 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7628004179728317 [2022-11-18 18:31:01,490 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2920 transitions. [2022-11-18 18:31:01,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2920 transitions. [2022-11-18 18:31:01,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:01,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2920 transitions. [2022-11-18 18:31:01,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.72727272727272) internal successors, (2920), 22 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:01,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:01,500 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:01,500 INFO L175 Difference]: Start difference. First operand has 330 places, 247 transitions, 1966 flow. Second operand 22 states and 2920 transitions. [2022-11-18 18:31:01,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 310 transitions, 3185 flow [2022-11-18 18:31:01,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 310 transitions, 2951 flow, removed 101 selfloop flow, removed 15 redundant places. [2022-11-18 18:31:01,606 INFO L231 Difference]: Finished difference. Result has 329 places, 257 transitions, 2131 flow [2022-11-18 18:31:01,606 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1849, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2131, PETRI_PLACES=329, PETRI_TRANSITIONS=257} [2022-11-18 18:31:01,607 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 172 predicate places. [2022-11-18 18:31:01,607 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 257 transitions, 2131 flow [2022-11-18 18:31:01,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:01,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:01,608 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:01,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-18 18:31:01,608 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:01,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:01,609 INFO L85 PathProgramCache]: Analyzing trace with hash -651897766, now seen corresponding path program 22 times [2022-11-18 18:31:01,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:01,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582530699] [2022-11-18 18:31:01,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:01,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:01,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:01,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582530699] [2022-11-18 18:31:01,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582530699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:01,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:01,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:01,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741413655] [2022-11-18 18:31:01,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:01,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:01,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:01,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:01,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:01,863 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:01,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 257 transitions, 2131 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:01,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:01,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:01,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:02,659 INFO L130 PetriNetUnfolder]: 327/1657 cut-off events. [2022-11-18 18:31:02,659 INFO L131 PetriNetUnfolder]: For 12184/12259 co-relation queries the response was YES. [2022-11-18 18:31:02,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7306 conditions, 1657 events. 327/1657 cut-off events. For 12184/12259 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12659 event pairs, 200 based on Foata normal form. 1/1591 useless extension candidates. Maximal degree in co-relation 7201. Up to 684 conditions per place. [2022-11-18 18:31:02,676 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 95 selfloop transitions, 45 changer transitions 29/318 dead transitions. [2022-11-18 18:31:02,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 318 transitions, 3356 flow [2022-11-18 18:31:02,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:31:02,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:31:02,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2022-11-18 18:31:02,681 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2022-11-18 18:31:02,682 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2022-11-18 18:31:02,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2022-11-18 18:31:02,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:02,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2022-11-18 18:31:02,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:02,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:02,691 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:02,691 INFO L175 Difference]: Start difference. First operand has 329 places, 257 transitions, 2131 flow. Second operand 21 states and 2792 transitions. [2022-11-18 18:31:02,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 318 transitions, 3356 flow [2022-11-18 18:31:02,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 318 transitions, 3189 flow, removed 68 selfloop flow, removed 6 redundant places. [2022-11-18 18:31:02,800 INFO L231 Difference]: Finished difference. Result has 345 places, 271 transitions, 2419 flow [2022-11-18 18:31:02,800 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2419, PETRI_PLACES=345, PETRI_TRANSITIONS=271} [2022-11-18 18:31:02,801 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 188 predicate places. [2022-11-18 18:31:02,802 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 271 transitions, 2419 flow [2022-11-18 18:31:02,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:02,802 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:02,802 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:02,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-18 18:31:02,803 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:02,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:02,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1448300728, now seen corresponding path program 23 times [2022-11-18 18:31:02,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:02,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414250598] [2022-11-18 18:31:02,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:02,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:03,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:03,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:03,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414250598] [2022-11-18 18:31:03,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414250598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:03,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:03,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:03,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866717760] [2022-11-18 18:31:03,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:03,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:03,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:03,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:03,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:03,044 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:03,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 271 transitions, 2419 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:03,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:03,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:03,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:03,940 INFO L130 PetriNetUnfolder]: 323/1655 cut-off events. [2022-11-18 18:31:03,940 INFO L131 PetriNetUnfolder]: For 12406/12481 co-relation queries the response was YES. [2022-11-18 18:31:03,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7364 conditions, 1655 events. 323/1655 cut-off events. For 12406/12481 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12660 event pairs, 198 based on Foata normal form. 1/1589 useless extension candidates. Maximal degree in co-relation 7250. Up to 682 conditions per place. [2022-11-18 18:31:03,959 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 104 selfloop transitions, 41 changer transitions 29/323 dead transitions. [2022-11-18 18:31:03,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 323 transitions, 3585 flow [2022-11-18 18:31:03,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:31:03,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 18:31:03,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2923 transitions. [2022-11-18 18:31:03,963 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7635841170323929 [2022-11-18 18:31:03,963 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2923 transitions. [2022-11-18 18:31:03,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2923 transitions. [2022-11-18 18:31:03,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:03,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2923 transitions. [2022-11-18 18:31:03,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.86363636363637) internal successors, (2923), 22 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:03,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:03,973 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:03,973 INFO L175 Difference]: Start difference. First operand has 345 places, 271 transitions, 2419 flow. Second operand 22 states and 2923 transitions. [2022-11-18 18:31:03,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 323 transitions, 3585 flow [2022-11-18 18:31:04,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 323 transitions, 3456 flow, removed 49 selfloop flow, removed 8 redundant places. [2022-11-18 18:31:04,076 INFO L231 Difference]: Finished difference. Result has 360 places, 277 transitions, 2579 flow [2022-11-18 18:31:04,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2330, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2579, PETRI_PLACES=360, PETRI_TRANSITIONS=277} [2022-11-18 18:31:04,076 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 203 predicate places. [2022-11-18 18:31:04,077 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 277 transitions, 2579 flow [2022-11-18 18:31:04,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:04,077 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:04,077 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:04,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-18 18:31:04,077 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:04,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:04,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1717779150, now seen corresponding path program 24 times [2022-11-18 18:31:04,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:04,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634763922] [2022-11-18 18:31:04,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:04,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:04,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:04,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:04,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634763922] [2022-11-18 18:31:04,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634763922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:04,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:04,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:04,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459524656] [2022-11-18 18:31:04,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:04,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:04,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:04,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:04,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:04,339 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:04,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 277 transitions, 2579 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:04,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:04,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:04,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:05,193 INFO L130 PetriNetUnfolder]: 329/1675 cut-off events. [2022-11-18 18:31:05,193 INFO L131 PetriNetUnfolder]: For 13461/13536 co-relation queries the response was YES. [2022-11-18 18:31:05,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7630 conditions, 1675 events. 329/1675 cut-off events. For 13461/13536 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12830 event pairs, 199 based on Foata normal form. 1/1607 useless extension candidates. Maximal degree in co-relation 7510. Up to 684 conditions per place. [2022-11-18 18:31:05,212 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 60 changer transitions 28/329 dead transitions. [2022-11-18 18:31:05,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 329 transitions, 3788 flow [2022-11-18 18:31:05,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:31:05,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 18:31:05,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2022-11-18 18:31:05,216 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2022-11-18 18:31:05,216 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2022-11-18 18:31:05,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2022-11-18 18:31:05,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:05,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2022-11-18 18:31:05,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:05,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:05,224 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:05,225 INFO L175 Difference]: Start difference. First operand has 360 places, 277 transitions, 2579 flow. Second operand 20 states and 2663 transitions. [2022-11-18 18:31:05,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 329 transitions, 3788 flow [2022-11-18 18:31:05,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 329 transitions, 3669 flow, removed 42 selfloop flow, removed 8 redundant places. [2022-11-18 18:31:05,335 INFO L231 Difference]: Finished difference. Result has 373 places, 289 transitions, 2892 flow [2022-11-18 18:31:05,336 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2485, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2892, PETRI_PLACES=373, PETRI_TRANSITIONS=289} [2022-11-18 18:31:05,336 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 216 predicate places. [2022-11-18 18:31:05,337 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 289 transitions, 2892 flow [2022-11-18 18:31:05,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:05,337 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:05,337 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:05,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-18 18:31:05,338 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:05,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:05,338 INFO L85 PathProgramCache]: Analyzing trace with hash -88083182, now seen corresponding path program 25 times [2022-11-18 18:31:05,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:05,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878493477] [2022-11-18 18:31:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:05,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:05,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:05,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878493477] [2022-11-18 18:31:05,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878493477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:05,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:05,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:05,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677185452] [2022-11-18 18:31:05,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:05,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:05,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:05,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:05,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:05,587 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:05,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 289 transitions, 2892 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:05,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:05,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:05,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:06,509 INFO L130 PetriNetUnfolder]: 333/1685 cut-off events. [2022-11-18 18:31:06,509 INFO L131 PetriNetUnfolder]: For 14873/14948 co-relation queries the response was YES. [2022-11-18 18:31:06,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7944 conditions, 1685 events. 333/1685 cut-off events. For 14873/14948 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 12933 event pairs, 200 based on Foata normal form. 1/1615 useless extension candidates. Maximal degree in co-relation 7817. Up to 686 conditions per place. [2022-11-18 18:31:06,534 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 113 selfloop transitions, 47 changer transitions 28/337 dead transitions. [2022-11-18 18:31:06,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 337 transitions, 4188 flow [2022-11-18 18:31:06,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:31:06,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 18:31:06,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2924 transitions. [2022-11-18 18:31:06,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7638453500522466 [2022-11-18 18:31:06,539 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2924 transitions. [2022-11-18 18:31:06,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2924 transitions. [2022-11-18 18:31:06,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:06,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2924 transitions. [2022-11-18 18:31:06,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.9090909090909) internal successors, (2924), 22 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:06,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:06,549 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:06,549 INFO L175 Difference]: Start difference. First operand has 373 places, 289 transitions, 2892 flow. Second operand 22 states and 2924 transitions. [2022-11-18 18:31:06,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 337 transitions, 4188 flow [2022-11-18 18:31:06,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 337 transitions, 3993 flow, removed 48 selfloop flow, removed 9 redundant places. [2022-11-18 18:31:06,730 INFO L231 Difference]: Finished difference. Result has 388 places, 299 transitions, 3099 flow [2022-11-18 18:31:06,730 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2741, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3099, PETRI_PLACES=388, PETRI_TRANSITIONS=299} [2022-11-18 18:31:06,731 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 231 predicate places. [2022-11-18 18:31:06,731 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 299 transitions, 3099 flow [2022-11-18 18:31:06,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:06,732 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:06,732 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:06,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-18 18:31:06,732 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:06,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:06,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1470390488, now seen corresponding path program 26 times [2022-11-18 18:31:06,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:06,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629327758] [2022-11-18 18:31:06,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:06,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:07,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:07,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:07,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629327758] [2022-11-18 18:31:07,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629327758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:07,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:07,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:07,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288654382] [2022-11-18 18:31:07,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:07,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:07,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:07,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:07,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:07,052 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:07,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 299 transitions, 3099 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:07,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:07,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:07,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:07,917 INFO L130 PetriNetUnfolder]: 329/1694 cut-off events. [2022-11-18 18:31:07,917 INFO L131 PetriNetUnfolder]: For 15441/15516 co-relation queries the response was YES. [2022-11-18 18:31:07,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7936 conditions, 1694 events. 329/1694 cut-off events. For 15441/15516 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 13107 event pairs, 197 based on Foata normal form. 1/1626 useless extension candidates. Maximal degree in co-relation 7803. Up to 684 conditions per place. [2022-11-18 18:31:07,940 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 117 selfloop transitions, 49 changer transitions 29/344 dead transitions. [2022-11-18 18:31:07,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 344 transitions, 4396 flow [2022-11-18 18:31:07,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:31:07,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:31:07,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2797 transitions. [2022-11-18 18:31:07,943 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7654625068418172 [2022-11-18 18:31:07,943 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2797 transitions. [2022-11-18 18:31:07,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2797 transitions. [2022-11-18 18:31:07,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:07,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2797 transitions. [2022-11-18 18:31:07,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 133.1904761904762) internal successors, (2797), 21 states have internal predecessors, (2797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:07,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:07,949 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:07,949 INFO L175 Difference]: Start difference. First operand has 388 places, 299 transitions, 3099 flow. Second operand 21 states and 2797 transitions. [2022-11-18 18:31:07,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 344 transitions, 4396 flow [2022-11-18 18:31:08,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 344 transitions, 4222 flow, removed 67 selfloop flow, removed 8 redundant places. [2022-11-18 18:31:08,065 INFO L231 Difference]: Finished difference. Result has 401 places, 306 transitions, 3289 flow [2022-11-18 18:31:08,065 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2968, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3289, PETRI_PLACES=401, PETRI_TRANSITIONS=306} [2022-11-18 18:31:08,070 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 244 predicate places. [2022-11-18 18:31:08,070 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 306 transitions, 3289 flow [2022-11-18 18:31:08,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:08,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:08,071 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:08,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-18 18:31:08,072 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:08,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:08,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1522236184, now seen corresponding path program 27 times [2022-11-18 18:31:08,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:08,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359676788] [2022-11-18 18:31:08,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:08,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:08,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:08,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:08,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359676788] [2022-11-18 18:31:08,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359676788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:08,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:08,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:08,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715855533] [2022-11-18 18:31:08,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:08,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:08,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:08,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:08,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:08,338 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:08,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 306 transitions, 3289 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:08,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:08,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:08,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:09,260 INFO L130 PetriNetUnfolder]: 332/1737 cut-off events. [2022-11-18 18:31:09,260 INFO L131 PetriNetUnfolder]: For 15900/15975 co-relation queries the response was YES. [2022-11-18 18:31:09,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8063 conditions, 1737 events. 332/1737 cut-off events. For 15900/15975 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 13574 event pairs, 196 based on Foata normal form. 1/1671 useless extension candidates. Maximal degree in co-relation 7924. Up to 685 conditions per place. [2022-11-18 18:31:09,283 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 125 selfloop transitions, 47 changer transitions 52/373 dead transitions. [2022-11-18 18:31:09,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 373 transitions, 4756 flow [2022-11-18 18:31:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:31:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 18:31:09,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2926 transitions. [2022-11-18 18:31:09,287 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-11-18 18:31:09,287 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2926 transitions. [2022-11-18 18:31:09,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2926 transitions. [2022-11-18 18:31:09,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:09,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2926 transitions. [2022-11-18 18:31:09,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 133.0) internal successors, (2926), 22 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:09,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:09,292 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:09,292 INFO L175 Difference]: Start difference. First operand has 401 places, 306 transitions, 3289 flow. Second operand 22 states and 2926 transitions. [2022-11-18 18:31:09,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 373 transitions, 4756 flow [2022-11-18 18:31:09,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 373 transitions, 4608 flow, removed 54 selfloop flow, removed 7 redundant places. [2022-11-18 18:31:09,406 INFO L231 Difference]: Finished difference. Result has 418 places, 306 transitions, 3346 flow [2022-11-18 18:31:09,406 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3157, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3346, PETRI_PLACES=418, PETRI_TRANSITIONS=306} [2022-11-18 18:31:09,407 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 261 predicate places. [2022-11-18 18:31:09,407 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 306 transitions, 3346 flow [2022-11-18 18:31:09,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:09,408 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:09,408 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:09,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-18 18:31:09,408 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:09,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:09,409 INFO L85 PathProgramCache]: Analyzing trace with hash -705639492, now seen corresponding path program 28 times [2022-11-18 18:31:09,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:09,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653147553] [2022-11-18 18:31:09,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:09,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:09,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:09,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653147553] [2022-11-18 18:31:09,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653147553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:09,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:09,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:09,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670247977] [2022-11-18 18:31:09,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:09,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:09,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:09,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:09,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:09,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:09,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 306 transitions, 3346 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:09,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:09,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:09,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:10,479 INFO L130 PetriNetUnfolder]: 320/1677 cut-off events. [2022-11-18 18:31:10,479 INFO L131 PetriNetUnfolder]: For 15514/15589 co-relation queries the response was YES. [2022-11-18 18:31:10,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7773 conditions, 1677 events. 320/1677 cut-off events. For 15514/15589 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13015 event pairs, 193 based on Foata normal form. 1/1613 useless extension candidates. Maximal degree in co-relation 7626. Up to 681 conditions per place. [2022-11-18 18:31:10,511 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 120 selfloop transitions, 36 changer transitions 40/345 dead transitions. [2022-11-18 18:31:10,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 345 transitions, 4269 flow [2022-11-18 18:31:10,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:31:10,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 18:31:10,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2400 transitions. [2022-11-18 18:31:10,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7662835249042146 [2022-11-18 18:31:10,514 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2400 transitions. [2022-11-18 18:31:10,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2400 transitions. [2022-11-18 18:31:10,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:10,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2400 transitions. [2022-11-18 18:31:10,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.33333333333334) internal successors, (2400), 18 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:10,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:10,518 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:10,518 INFO L175 Difference]: Start difference. First operand has 418 places, 306 transitions, 3346 flow. Second operand 18 states and 2400 transitions. [2022-11-18 18:31:10,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 345 transitions, 4269 flow [2022-11-18 18:31:10,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 345 transitions, 3982 flow, removed 80 selfloop flow, removed 20 redundant places. [2022-11-18 18:31:10,627 INFO L231 Difference]: Finished difference. Result has 407 places, 286 transitions, 2852 flow [2022-11-18 18:31:10,627 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3154, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2852, PETRI_PLACES=407, PETRI_TRANSITIONS=286} [2022-11-18 18:31:10,628 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 250 predicate places. [2022-11-18 18:31:10,628 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 286 transitions, 2852 flow [2022-11-18 18:31:10,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:10,628 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:10,628 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:10,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-18 18:31:10,628 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:10,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:10,629 INFO L85 PathProgramCache]: Analyzing trace with hash 808316756, now seen corresponding path program 29 times [2022-11-18 18:31:10,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:10,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359536712] [2022-11-18 18:31:10,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:10,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:10,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:10,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:10,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359536712] [2022-11-18 18:31:10,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359536712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:10,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:10,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:10,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355922728] [2022-11-18 18:31:10,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:10,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:10,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:10,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:10,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:10,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:10,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 286 transitions, 2852 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:10,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:10,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:10,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:11,707 INFO L130 PetriNetUnfolder]: 315/1645 cut-off events. [2022-11-18 18:31:11,707 INFO L131 PetriNetUnfolder]: For 13111/13186 co-relation queries the response was YES. [2022-11-18 18:31:11,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7451 conditions, 1645 events. 315/1645 cut-off events. For 13111/13186 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12691 event pairs, 198 based on Foata normal form. 1/1577 useless extension candidates. Maximal degree in co-relation 7315. Up to 679 conditions per place. [2022-11-18 18:31:11,729 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 111 selfloop transitions, 27 changer transitions 38/325 dead transitions. [2022-11-18 18:31:11,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 325 transitions, 3711 flow [2022-11-18 18:31:11,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:31:11,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 18:31:11,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2531 transitions. [2022-11-18 18:31:11,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7655777374470659 [2022-11-18 18:31:11,733 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2531 transitions. [2022-11-18 18:31:11,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2531 transitions. [2022-11-18 18:31:11,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:11,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2531 transitions. [2022-11-18 18:31:11,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.21052631578948) internal successors, (2531), 19 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:11,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:11,737 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:11,737 INFO L175 Difference]: Start difference. First operand has 407 places, 286 transitions, 2852 flow. Second operand 19 states and 2531 transitions. [2022-11-18 18:31:11,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 325 transitions, 3711 flow [2022-11-18 18:31:11,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 325 transitions, 3467 flow, removed 29 selfloop flow, removed 21 redundant places. [2022-11-18 18:31:11,838 INFO L231 Difference]: Finished difference. Result has 387 places, 275 transitions, 2530 flow [2022-11-18 18:31:11,839 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2662, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2530, PETRI_PLACES=387, PETRI_TRANSITIONS=275} [2022-11-18 18:31:11,840 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 230 predicate places. [2022-11-18 18:31:11,840 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 275 transitions, 2530 flow [2022-11-18 18:31:11,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:11,840 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:11,841 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:11,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-18 18:31:11,841 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:11,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:11,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1684834684, now seen corresponding path program 30 times [2022-11-18 18:31:11,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:11,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176816891] [2022-11-18 18:31:11,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:11,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:12,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:12,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:12,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176816891] [2022-11-18 18:31:12,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176816891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:12,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:12,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:12,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531606009] [2022-11-18 18:31:12,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:12,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:12,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:12,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:12,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:12,113 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:12,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 275 transitions, 2530 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:12,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:12,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:12,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:12,897 INFO L130 PetriNetUnfolder]: 303/1609 cut-off events. [2022-11-18 18:31:12,897 INFO L131 PetriNetUnfolder]: For 11604/11679 co-relation queries the response was YES. [2022-11-18 18:31:12,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6907 conditions, 1609 events. 303/1609 cut-off events. For 11604/11679 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12325 event pairs, 196 based on Foata normal form. 1/1543 useless extension candidates. Maximal degree in co-relation 6777. Up to 675 conditions per place. [2022-11-18 18:31:12,918 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 15 changer transitions 39/303 dead transitions. [2022-11-18 18:31:12,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 303 transitions, 3118 flow [2022-11-18 18:31:12,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:31:12,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 18:31:12,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2651 transitions. [2022-11-18 18:31:12,922 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7617816091954023 [2022-11-18 18:31:12,922 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2651 transitions. [2022-11-18 18:31:12,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2651 transitions. [2022-11-18 18:31:12,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:12,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2651 transitions. [2022-11-18 18:31:12,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.55) internal successors, (2651), 20 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:12,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:12,927 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:12,927 INFO L175 Difference]: Start difference. First operand has 387 places, 275 transitions, 2530 flow. Second operand 20 states and 2651 transitions. [2022-11-18 18:31:12,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 303 transitions, 3118 flow [2022-11-18 18:31:13,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 303 transitions, 2955 flow, removed 27 selfloop flow, removed 23 redundant places. [2022-11-18 18:31:13,023 INFO L231 Difference]: Finished difference. Result has 370 places, 252 transitions, 2066 flow [2022-11-18 18:31:13,023 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2394, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2066, PETRI_PLACES=370, PETRI_TRANSITIONS=252} [2022-11-18 18:31:13,024 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 213 predicate places. [2022-11-18 18:31:13,024 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 252 transitions, 2066 flow [2022-11-18 18:31:13,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:13,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:13,025 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:13,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-18 18:31:13,025 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:13,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:13,026 INFO L85 PathProgramCache]: Analyzing trace with hash -717060444, now seen corresponding path program 31 times [2022-11-18 18:31:13,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:13,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858379314] [2022-11-18 18:31:13,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:13,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:13,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:13,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:13,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858379314] [2022-11-18 18:31:13,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858379314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:13,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:13,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:13,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659537593] [2022-11-18 18:31:13,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:13,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:13,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:13,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:13,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:13,279 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:13,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 252 transitions, 2066 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:13,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:13,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:13,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:14,167 INFO L130 PetriNetUnfolder]: 310/1628 cut-off events. [2022-11-18 18:31:14,167 INFO L131 PetriNetUnfolder]: For 11281/11356 co-relation queries the response was YES. [2022-11-18 18:31:14,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6935 conditions, 1628 events. 310/1628 cut-off events. For 11281/11356 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12477 event pairs, 198 based on Foata normal form. 1/1558 useless extension candidates. Maximal degree in co-relation 6814. Up to 675 conditions per place. [2022-11-18 18:31:14,189 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 86 selfloop transitions, 33 changer transitions 43/311 dead transitions. [2022-11-18 18:31:14,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 311 transitions, 3260 flow [2022-11-18 18:31:14,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 18:31:14,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-18 18:31:14,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3057 transitions. [2022-11-18 18:31:14,198 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7638680659670165 [2022-11-18 18:31:14,198 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3057 transitions. [2022-11-18 18:31:14,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3057 transitions. [2022-11-18 18:31:14,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:14,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3057 transitions. [2022-11-18 18:31:14,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.91304347826087) internal successors, (3057), 23 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:14,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:14,208 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:14,208 INFO L175 Difference]: Start difference. First operand has 370 places, 252 transitions, 2066 flow. Second operand 23 states and 3057 transitions. [2022-11-18 18:31:14,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 311 transitions, 3260 flow [2022-11-18 18:31:14,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 311 transitions, 3062 flow, removed 32 selfloop flow, removed 21 redundant places. [2022-11-18 18:31:14,283 INFO L231 Difference]: Finished difference. Result has 353 places, 257 transitions, 2169 flow [2022-11-18 18:31:14,283 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1959, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2169, PETRI_PLACES=353, PETRI_TRANSITIONS=257} [2022-11-18 18:31:14,284 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 196 predicate places. [2022-11-18 18:31:14,284 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 257 transitions, 2169 flow [2022-11-18 18:31:14,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:14,284 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:14,285 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:14,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-18 18:31:14,285 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:14,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:14,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1794958352, now seen corresponding path program 32 times [2022-11-18 18:31:14,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:14,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251887928] [2022-11-18 18:31:14,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:14,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:14,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:14,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251887928] [2022-11-18 18:31:14,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251887928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:14,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:14,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:14,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564937656] [2022-11-18 18:31:14,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:14,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:14,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:14,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:14,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:14,535 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:14,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 257 transitions, 2169 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:14,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:14,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:14,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:15,353 INFO L130 PetriNetUnfolder]: 306/1615 cut-off events. [2022-11-18 18:31:15,353 INFO L131 PetriNetUnfolder]: For 10578/10653 co-relation queries the response was YES. [2022-11-18 18:31:15,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6730 conditions, 1615 events. 306/1615 cut-off events. For 10578/10653 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12370 event pairs, 196 based on Foata normal form. 1/1545 useless extension candidates. Maximal degree in co-relation 6610. Up to 675 conditions per place. [2022-11-18 18:31:15,370 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 83 selfloop transitions, 35 changer transitions 41/308 dead transitions. [2022-11-18 18:31:15,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 308 transitions, 3172 flow [2022-11-18 18:31:15,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 18:31:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 18:31:15,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3188 transitions. [2022-11-18 18:31:15,373 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7634099616858238 [2022-11-18 18:31:15,374 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3188 transitions. [2022-11-18 18:31:15,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3188 transitions. [2022-11-18 18:31:15,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:15,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3188 transitions. [2022-11-18 18:31:15,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.83333333333334) internal successors, (3188), 24 states have internal predecessors, (3188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:15,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:15,382 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:15,382 INFO L175 Difference]: Start difference. First operand has 353 places, 257 transitions, 2169 flow. Second operand 24 states and 3188 transitions. [2022-11-18 18:31:15,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 308 transitions, 3172 flow [2022-11-18 18:31:15,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 308 transitions, 2987 flow, removed 39 selfloop flow, removed 17 redundant places. [2022-11-18 18:31:15,479 INFO L231 Difference]: Finished difference. Result has 358 places, 256 transitions, 2149 flow [2022-11-18 18:31:15,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2048, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2149, PETRI_PLACES=358, PETRI_TRANSITIONS=256} [2022-11-18 18:31:15,480 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 201 predicate places. [2022-11-18 18:31:15,481 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 256 transitions, 2149 flow [2022-11-18 18:31:15,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:15,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:15,481 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:15,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-18 18:31:15,482 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:15,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:15,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1164285236, now seen corresponding path program 33 times [2022-11-18 18:31:15,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:15,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496931368] [2022-11-18 18:31:15,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:15,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:15,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:15,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496931368] [2022-11-18 18:31:15,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496931368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:15,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:15,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:15,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924189541] [2022-11-18 18:31:15,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:15,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:15,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:15,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:15,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:15,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:15,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 256 transitions, 2149 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:15,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:15,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:15,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:16,547 INFO L130 PetriNetUnfolder]: 298/1597 cut-off events. [2022-11-18 18:31:16,547 INFO L131 PetriNetUnfolder]: For 10217/10292 co-relation queries the response was YES. [2022-11-18 18:31:16,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6528 conditions, 1597 events. 298/1597 cut-off events. For 10217/10292 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12195 event pairs, 197 based on Foata normal form. 1/1526 useless extension candidates. Maximal degree in co-relation 6408. Up to 673 conditions per place. [2022-11-18 18:31:16,569 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 77 selfloop transitions, 25 changer transitions 37/288 dead transitions. [2022-11-18 18:31:16,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 288 transitions, 2816 flow [2022-11-18 18:31:16,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:31:16,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 18:31:16,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2529 transitions. [2022-11-18 18:31:16,571 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.76497277676951 [2022-11-18 18:31:16,571 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2529 transitions. [2022-11-18 18:31:16,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2529 transitions. [2022-11-18 18:31:16,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:16,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2529 transitions. [2022-11-18 18:31:16,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.10526315789474) internal successors, (2529), 19 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:16,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:16,576 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:16,576 INFO L175 Difference]: Start difference. First operand has 358 places, 256 transitions, 2149 flow. Second operand 19 states and 2529 transitions. [2022-11-18 18:31:16,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 288 transitions, 2816 flow [2022-11-18 18:31:16,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 288 transitions, 2656 flow, removed 39 selfloop flow, removed 18 redundant places. [2022-11-18 18:31:16,638 INFO L231 Difference]: Finished difference. Result has 350 places, 245 transitions, 1898 flow [2022-11-18 18:31:16,639 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2026, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1898, PETRI_PLACES=350, PETRI_TRANSITIONS=245} [2022-11-18 18:31:16,639 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 193 predicate places. [2022-11-18 18:31:16,639 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 245 transitions, 1898 flow [2022-11-18 18:31:16,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:16,640 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:16,640 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:16,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-18 18:31:16,640 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:16,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:16,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1873525894, now seen corresponding path program 34 times [2022-11-18 18:31:16,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:16,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694997325] [2022-11-18 18:31:16,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:16,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:16,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:16,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694997325] [2022-11-18 18:31:16,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694997325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:16,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:16,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:16,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031926372] [2022-11-18 18:31:16,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:16,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:16,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:16,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:16,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:16,868 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:16,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 245 transitions, 1898 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:16,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:16,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:16,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:17,649 INFO L130 PetriNetUnfolder]: 287/1542 cut-off events. [2022-11-18 18:31:17,649 INFO L131 PetriNetUnfolder]: For 9380/9455 co-relation queries the response was YES. [2022-11-18 18:31:17,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6160 conditions, 1542 events. 287/1542 cut-off events. For 9380/9455 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11644 event pairs, 194 based on Foata normal form. 1/1473 useless extension candidates. Maximal degree in co-relation 6047. Up to 671 conditions per place. [2022-11-18 18:31:17,667 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 71 selfloop transitions, 13 changer transitions 37/270 dead transitions. [2022-11-18 18:31:17,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 270 transitions, 2399 flow [2022-11-18 18:31:17,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:31:17,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 18:31:17,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2656 transitions. [2022-11-18 18:31:17,670 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2022-11-18 18:31:17,670 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2656 transitions. [2022-11-18 18:31:17,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2656 transitions. [2022-11-18 18:31:17,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:17,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2656 transitions. [2022-11-18 18:31:17,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.8) internal successors, (2656), 20 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:17,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:17,675 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:17,675 INFO L175 Difference]: Start difference. First operand has 350 places, 245 transitions, 1898 flow. Second operand 20 states and 2656 transitions. [2022-11-18 18:31:17,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 270 transitions, 2399 flow [2022-11-18 18:31:17,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 270 transitions, 2229 flow, removed 26 selfloop flow, removed 23 redundant places. [2022-11-18 18:31:17,732 INFO L231 Difference]: Finished difference. Result has 335 places, 227 transitions, 1530 flow [2022-11-18 18:31:17,733 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1764, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1530, PETRI_PLACES=335, PETRI_TRANSITIONS=227} [2022-11-18 18:31:17,733 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 178 predicate places. [2022-11-18 18:31:17,734 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 227 transitions, 1530 flow [2022-11-18 18:31:17,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:17,734 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:17,734 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:17,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-18 18:31:17,735 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:17,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:17,736 INFO L85 PathProgramCache]: Analyzing trace with hash 500938556, now seen corresponding path program 35 times [2022-11-18 18:31:17,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:17,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71094318] [2022-11-18 18:31:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:17,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:18,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:18,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71094318] [2022-11-18 18:31:18,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71094318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:18,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:18,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:18,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569229758] [2022-11-18 18:31:18,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:18,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:18,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:18,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:18,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:18,005 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:18,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 227 transitions, 1530 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:18,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:18,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:18,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:18,677 INFO L130 PetriNetUnfolder]: 275/1474 cut-off events. [2022-11-18 18:31:18,677 INFO L131 PetriNetUnfolder]: For 8675/8750 co-relation queries the response was YES. [2022-11-18 18:31:18,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5743 conditions, 1474 events. 275/1474 cut-off events. For 8675/8750 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11002 event pairs, 191 based on Foata normal form. 1/1408 useless extension candidates. Maximal degree in co-relation 5637. Up to 651 conditions per place. [2022-11-18 18:31:18,692 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 57 selfloop transitions, 2 changer transitions 40/246 dead transitions. [2022-11-18 18:31:18,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 246 transitions, 1877 flow [2022-11-18 18:31:18,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:31:18,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 18:31:18,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2645 transitions. [2022-11-18 18:31:18,697 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2022-11-18 18:31:18,697 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2645 transitions. [2022-11-18 18:31:18,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2645 transitions. [2022-11-18 18:31:18,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:18,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2645 transitions. [2022-11-18 18:31:18,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.25) internal successors, (2645), 20 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:18,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:18,706 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:18,707 INFO L175 Difference]: Start difference. First operand has 335 places, 227 transitions, 1530 flow. Second operand 20 states and 2645 transitions. [2022-11-18 18:31:18,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 246 transitions, 1877 flow [2022-11-18 18:31:18,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 246 transitions, 1788 flow, removed 16 selfloop flow, removed 21 redundant places. [2022-11-18 18:31:18,771 INFO L231 Difference]: Finished difference. Result has 313 places, 200 transitions, 1124 flow [2022-11-18 18:31:18,772 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1124, PETRI_PLACES=313, PETRI_TRANSITIONS=200} [2022-11-18 18:31:18,772 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 156 predicate places. [2022-11-18 18:31:18,772 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 200 transitions, 1124 flow [2022-11-18 18:31:18,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:18,773 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:18,773 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:18,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-18 18:31:18,774 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:18,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:18,774 INFO L85 PathProgramCache]: Analyzing trace with hash -559535746, now seen corresponding path program 1 times [2022-11-18 18:31:18,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:18,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344637489] [2022-11-18 18:31:18,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:18,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:18,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:18,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:18,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344637489] [2022-11-18 18:31:18,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344637489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:18,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:18,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:18,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123559934] [2022-11-18 18:31:18,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:18,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:18,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:18,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:18,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:18,976 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:18,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 200 transitions, 1124 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:18,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:18,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:18,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:19,939 INFO L130 PetriNetUnfolder]: 287/1530 cut-off events. [2022-11-18 18:31:19,939 INFO L131 PetriNetUnfolder]: For 9253/9352 co-relation queries the response was YES. [2022-11-18 18:31:19,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5790 conditions, 1530 events. 287/1530 cut-off events. For 9253/9352 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11420 event pairs, 189 based on Foata normal form. 7/1477 useless extension candidates. Maximal degree in co-relation 5692. Up to 600 conditions per place. [2022-11-18 18:31:19,951 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 99 selfloop transitions, 7 changer transitions 52/306 dead transitions. [2022-11-18 18:31:19,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 306 transitions, 2419 flow [2022-11-18 18:31:19,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 18:31:19,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 18:31:19,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4110 transitions. [2022-11-18 18:31:19,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7619577308120133 [2022-11-18 18:31:19,956 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4110 transitions. [2022-11-18 18:31:19,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4110 transitions. [2022-11-18 18:31:19,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:19,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4110 transitions. [2022-11-18 18:31:19,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.58064516129033) internal successors, (4110), 31 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:19,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:19,963 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:19,963 INFO L175 Difference]: Start difference. First operand has 313 places, 200 transitions, 1124 flow. Second operand 31 states and 4110 transitions. [2022-11-18 18:31:19,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 306 transitions, 2419 flow [2022-11-18 18:31:19,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 306 transitions, 2339 flow, removed 25 selfloop flow, removed 26 redundant places. [2022-11-18 18:31:19,997 INFO L231 Difference]: Finished difference. Result has 309 places, 206 transitions, 1221 flow [2022-11-18 18:31:19,998 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1221, PETRI_PLACES=309, PETRI_TRANSITIONS=206} [2022-11-18 18:31:19,998 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 152 predicate places. [2022-11-18 18:31:19,998 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 206 transitions, 1221 flow [2022-11-18 18:31:19,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:19,999 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:19,999 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:19,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-18 18:31:19,999 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:20,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:20,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1951312658, now seen corresponding path program 2 times [2022-11-18 18:31:20,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:20,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472999222] [2022-11-18 18:31:20,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:20,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:20,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:20,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472999222] [2022-11-18 18:31:20,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472999222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:20,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:20,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:20,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974711439] [2022-11-18 18:31:20,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:20,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:20,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:20,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:20,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:20,229 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:20,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 206 transitions, 1221 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:20,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:20,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:20,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:20,985 INFO L130 PetriNetUnfolder]: 283/1520 cut-off events. [2022-11-18 18:31:20,985 INFO L131 PetriNetUnfolder]: For 18197/18289 co-relation queries the response was YES. [2022-11-18 18:31:20,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7069 conditions, 1520 events. 283/1520 cut-off events. For 18197/18289 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11313 event pairs, 199 based on Foata normal form. 6/1464 useless extension candidates. Maximal degree in co-relation 6964. Up to 635 conditions per place. [2022-11-18 18:31:21,002 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 71 selfloop transitions, 16 changer transitions 25/260 dead transitions. [2022-11-18 18:31:21,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 260 transitions, 2322 flow [2022-11-18 18:31:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:31:21,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 18:31:21,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2400 transitions. [2022-11-18 18:31:21,005 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7662835249042146 [2022-11-18 18:31:21,005 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2400 transitions. [2022-11-18 18:31:21,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2400 transitions. [2022-11-18 18:31:21,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:21,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2400 transitions. [2022-11-18 18:31:21,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.33333333333334) internal successors, (2400), 18 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:21,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:21,010 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:21,011 INFO L175 Difference]: Start difference. First operand has 309 places, 206 transitions, 1221 flow. Second operand 18 states and 2400 transitions. [2022-11-18 18:31:21,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 260 transitions, 2322 flow [2022-11-18 18:31:21,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 260 transitions, 2033 flow, removed 144 selfloop flow, removed 19 redundant places. [2022-11-18 18:31:21,067 INFO L231 Difference]: Finished difference. Result has 296 places, 216 transitions, 1383 flow [2022-11-18 18:31:21,067 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1383, PETRI_PLACES=296, PETRI_TRANSITIONS=216} [2022-11-18 18:31:21,067 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 139 predicate places. [2022-11-18 18:31:21,067 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 216 transitions, 1383 flow [2022-11-18 18:31:21,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:21,068 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:21,068 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:21,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-18 18:31:21,068 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:21,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:21,069 INFO L85 PathProgramCache]: Analyzing trace with hash 2102849916, now seen corresponding path program 3 times [2022-11-18 18:31:21,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:21,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337827795] [2022-11-18 18:31:21,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:21,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:21,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:21,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:21,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337827795] [2022-11-18 18:31:21,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337827795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:21,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:21,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:21,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251560036] [2022-11-18 18:31:21,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:21,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:21,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:21,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:21,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:21,328 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:21,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 216 transitions, 1383 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:21,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:21,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:21,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:22,276 INFO L130 PetriNetUnfolder]: 332/1645 cut-off events. [2022-11-18 18:31:22,276 INFO L131 PetriNetUnfolder]: For 15339/15434 co-relation queries the response was YES. [2022-11-18 18:31:22,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7486 conditions, 1645 events. 332/1645 cut-off events. For 15339/15434 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12288 event pairs, 210 based on Foata normal form. 6/1588 useless extension candidates. Maximal degree in co-relation 7388. Up to 641 conditions per place. [2022-11-18 18:31:22,297 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 91 selfloop transitions, 19 changer transitions 40/298 dead transitions. [2022-11-18 18:31:22,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 298 transitions, 2930 flow [2022-11-18 18:31:22,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 18:31:22,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-18 18:31:22,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3452 transitions. [2022-11-18 18:31:22,302 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7630415561450045 [2022-11-18 18:31:22,302 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3452 transitions. [2022-11-18 18:31:22,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3452 transitions. [2022-11-18 18:31:22,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:22,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3452 transitions. [2022-11-18 18:31:22,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.76923076923077) internal successors, (3452), 26 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:22,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:22,313 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:22,313 INFO L175 Difference]: Start difference. First operand has 296 places, 216 transitions, 1383 flow. Second operand 26 states and 3452 transitions. [2022-11-18 18:31:22,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 298 transitions, 2930 flow [2022-11-18 18:31:22,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 298 transitions, 2709 flow, removed 86 selfloop flow, removed 8 redundant places. [2022-11-18 18:31:22,369 INFO L231 Difference]: Finished difference. Result has 326 places, 232 transitions, 1624 flow [2022-11-18 18:31:22,370 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1624, PETRI_PLACES=326, PETRI_TRANSITIONS=232} [2022-11-18 18:31:22,426 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 169 predicate places. [2022-11-18 18:31:22,426 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 232 transitions, 1624 flow [2022-11-18 18:31:22,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:22,427 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:22,427 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:22,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-18 18:31:22,427 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:22,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:22,428 INFO L85 PathProgramCache]: Analyzing trace with hash -977445598, now seen corresponding path program 4 times [2022-11-18 18:31:22,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:22,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978351217] [2022-11-18 18:31:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:22,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:22,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:22,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978351217] [2022-11-18 18:31:22,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978351217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:22,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:22,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:22,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071412784] [2022-11-18 18:31:22,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:22,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:22,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:22,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:22,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:22,680 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:22,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 232 transitions, 1624 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:22,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:22,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:22,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:23,568 INFO L130 PetriNetUnfolder]: 328/1663 cut-off events. [2022-11-18 18:31:23,568 INFO L131 PetriNetUnfolder]: For 21895/21989 co-relation queries the response was YES. [2022-11-18 18:31:23,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8292 conditions, 1663 events. 328/1663 cut-off events. For 21895/21989 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12719 event pairs, 202 based on Foata normal form. 8/1606 useless extension candidates. Maximal degree in co-relation 8178. Up to 656 conditions per place. [2022-11-18 18:31:23,587 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 102 selfloop transitions, 25 changer transitions 43/318 dead transitions. [2022-11-18 18:31:23,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 318 transitions, 3407 flow [2022-11-18 18:31:23,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 18:31:23,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-18 18:31:23,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3446 transitions. [2022-11-18 18:31:23,591 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7617152961980548 [2022-11-18 18:31:23,591 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3446 transitions. [2022-11-18 18:31:23,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3446 transitions. [2022-11-18 18:31:23,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:23,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3446 transitions. [2022-11-18 18:31:23,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.53846153846155) internal successors, (3446), 26 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:23,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:23,599 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:23,599 INFO L175 Difference]: Start difference. First operand has 326 places, 232 transitions, 1624 flow. Second operand 26 states and 3446 transitions. [2022-11-18 18:31:23,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 318 transitions, 3407 flow [2022-11-18 18:31:23,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 318 transitions, 2877 flow, removed 265 selfloop flow, removed 13 redundant places. [2022-11-18 18:31:23,667 INFO L231 Difference]: Finished difference. Result has 343 places, 241 transitions, 1694 flow [2022-11-18 18:31:23,667 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1438, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1694, PETRI_PLACES=343, PETRI_TRANSITIONS=241} [2022-11-18 18:31:23,668 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 186 predicate places. [2022-11-18 18:31:23,668 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 241 transitions, 1694 flow [2022-11-18 18:31:23,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:23,668 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:23,668 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:23,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-18 18:31:23,668 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:23,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:23,669 INFO L85 PathProgramCache]: Analyzing trace with hash -114674878, now seen corresponding path program 5 times [2022-11-18 18:31:23,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:23,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510591523] [2022-11-18 18:31:23,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:23,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:23,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:23,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:23,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510591523] [2022-11-18 18:31:23,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510591523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:23,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:23,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:23,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835023234] [2022-11-18 18:31:23,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:23,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:23,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:23,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:23,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:23,879 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:23,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 241 transitions, 1694 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:23,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:23,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:23,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:24,767 INFO L130 PetriNetUnfolder]: 329/1679 cut-off events. [2022-11-18 18:31:24,768 INFO L131 PetriNetUnfolder]: For 20674/20768 co-relation queries the response was YES. [2022-11-18 18:31:24,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8207 conditions, 1679 events. 329/1679 cut-off events. For 20674/20768 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12814 event pairs, 223 based on Foata normal form. 6/1618 useless extension candidates. Maximal degree in co-relation 8084. Up to 671 conditions per place. [2022-11-18 18:31:24,802 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 26 changer transitions 40/321 dead transitions. [2022-11-18 18:31:24,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 321 transitions, 3437 flow [2022-11-18 18:31:24,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 18:31:24,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-18 18:31:24,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3319 transitions. [2022-11-18 18:31:24,806 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7629885057471264 [2022-11-18 18:31:24,806 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3319 transitions. [2022-11-18 18:31:24,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3319 transitions. [2022-11-18 18:31:24,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:24,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3319 transitions. [2022-11-18 18:31:24,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.76) internal successors, (3319), 25 states have internal predecessors, (3319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:24,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:24,815 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:24,815 INFO L175 Difference]: Start difference. First operand has 343 places, 241 transitions, 1694 flow. Second operand 25 states and 3319 transitions. [2022-11-18 18:31:24,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 321 transitions, 3437 flow [2022-11-18 18:31:24,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 321 transitions, 3157 flow, removed 130 selfloop flow, removed 17 redundant places. [2022-11-18 18:31:24,947 INFO L231 Difference]: Finished difference. Result has 354 places, 255 transitions, 1939 flow [2022-11-18 18:31:24,948 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1608, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1939, PETRI_PLACES=354, PETRI_TRANSITIONS=255} [2022-11-18 18:31:24,948 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 197 predicate places. [2022-11-18 18:31:24,948 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 255 transitions, 1939 flow [2022-11-18 18:31:24,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:24,949 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:24,949 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:24,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-18 18:31:24,949 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:24,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:24,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1576297166, now seen corresponding path program 6 times [2022-11-18 18:31:24,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:24,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900634366] [2022-11-18 18:31:24,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:24,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:25,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:25,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:25,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900634366] [2022-11-18 18:31:25,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900634366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:25,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:25,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:25,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713019334] [2022-11-18 18:31:25,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:25,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:25,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:25,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:25,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:25,161 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:25,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 255 transitions, 1939 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:25,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:25,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:25,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:26,148 INFO L130 PetriNetUnfolder]: 326/1702 cut-off events. [2022-11-18 18:31:26,148 INFO L131 PetriNetUnfolder]: For 23224/23322 co-relation queries the response was YES. [2022-11-18 18:31:26,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8537 conditions, 1702 events. 326/1702 cut-off events. For 23224/23322 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13148 event pairs, 196 based on Foata normal form. 6/1646 useless extension candidates. Maximal degree in co-relation 8408. Up to 610 conditions per place. [2022-11-18 18:31:26,173 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 147 selfloop transitions, 28 changer transitions 53/376 dead transitions. [2022-11-18 18:31:26,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 376 transitions, 4220 flow [2022-11-18 18:31:26,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 18:31:26,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 18:31:26,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3976 transitions. [2022-11-18 18:31:26,178 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7616858237547893 [2022-11-18 18:31:26,178 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3976 transitions. [2022-11-18 18:31:26,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3976 transitions. [2022-11-18 18:31:26,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:26,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3976 transitions. [2022-11-18 18:31:26,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.53333333333333) internal successors, (3976), 30 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:26,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:26,187 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:26,187 INFO L175 Difference]: Start difference. First operand has 354 places, 255 transitions, 1939 flow. Second operand 30 states and 3976 transitions. [2022-11-18 18:31:26,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 376 transitions, 4220 flow [2022-11-18 18:31:26,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 376 transitions, 3696 flow, removed 262 selfloop flow, removed 13 redundant places. [2022-11-18 18:31:26,305 INFO L231 Difference]: Finished difference. Result has 382 places, 258 transitions, 2042 flow [2022-11-18 18:31:26,306 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1795, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2042, PETRI_PLACES=382, PETRI_TRANSITIONS=258} [2022-11-18 18:31:26,306 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 225 predicate places. [2022-11-18 18:31:26,307 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 258 transitions, 2042 flow [2022-11-18 18:31:26,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:26,307 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:26,307 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:26,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-18 18:31:26,307 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:26,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:26,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2124005502, now seen corresponding path program 7 times [2022-11-18 18:31:26,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:26,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185897368] [2022-11-18 18:31:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:26,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:26,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:26,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:26,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185897368] [2022-11-18 18:31:26,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185897368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:26,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:26,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:26,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986682801] [2022-11-18 18:31:26,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:26,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:26,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:26,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:26,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:26,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:26,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 258 transitions, 2042 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:26,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:26,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:26,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:27,659 INFO L130 PetriNetUnfolder]: 333/1716 cut-off events. [2022-11-18 18:31:27,659 INFO L131 PetriNetUnfolder]: For 22685/22783 co-relation queries the response was YES. [2022-11-18 18:31:27,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8649 conditions, 1716 events. 333/1716 cut-off events. For 22685/22783 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13268 event pairs, 207 based on Foata normal form. 8/1656 useless extension candidates. Maximal degree in co-relation 8505. Up to 666 conditions per place. [2022-11-18 18:31:27,687 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 38 changer transitions 45/338 dead transitions. [2022-11-18 18:31:27,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 338 transitions, 3706 flow [2022-11-18 18:31:27,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 18:31:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 18:31:27,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3705 transitions. [2022-11-18 18:31:27,691 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7604679802955665 [2022-11-18 18:31:27,692 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3705 transitions. [2022-11-18 18:31:27,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3705 transitions. [2022-11-18 18:31:27,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:27,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3705 transitions. [2022-11-18 18:31:27,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.32142857142858) internal successors, (3705), 28 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:27,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:27,698 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:27,699 INFO L175 Difference]: Start difference. First operand has 382 places, 258 transitions, 2042 flow. Second operand 28 states and 3705 transitions. [2022-11-18 18:31:27,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 338 transitions, 3706 flow [2022-11-18 18:31:27,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 338 transitions, 3456 flow, removed 111 selfloop flow, removed 23 redundant places. [2022-11-18 18:31:27,816 INFO L231 Difference]: Finished difference. Result has 382 places, 265 transitions, 2204 flow [2022-11-18 18:31:27,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1941, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2204, PETRI_PLACES=382, PETRI_TRANSITIONS=265} [2022-11-18 18:31:27,817 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 225 predicate places. [2022-11-18 18:31:27,817 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 265 transitions, 2204 flow [2022-11-18 18:31:27,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:27,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:27,818 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:27,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-18 18:31:27,819 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:27,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:27,819 INFO L85 PathProgramCache]: Analyzing trace with hash 589464484, now seen corresponding path program 8 times [2022-11-18 18:31:27,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:27,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865044696] [2022-11-18 18:31:27,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:27,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:28,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:28,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:28,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865044696] [2022-11-18 18:31:28,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865044696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:28,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:28,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:28,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132719709] [2022-11-18 18:31:28,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:28,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:28,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:28,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:28,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:28,057 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:28,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 265 transitions, 2204 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:28,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:28,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:28,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:29,077 INFO L130 PetriNetUnfolder]: 328/1702 cut-off events. [2022-11-18 18:31:29,077 INFO L131 PetriNetUnfolder]: For 19959/20057 co-relation queries the response was YES. [2022-11-18 18:31:29,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8390 conditions, 1702 events. 328/1702 cut-off events. For 19959/20057 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13086 event pairs, 206 based on Foata normal form. 8/1642 useless extension candidates. Maximal degree in co-relation 8248. Up to 662 conditions per place. [2022-11-18 18:31:29,103 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 117 selfloop transitions, 35 changer transitions 42/342 dead transitions. [2022-11-18 18:31:29,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 342 transitions, 4020 flow [2022-11-18 18:31:29,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 18:31:29,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-18 18:31:29,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3579 transitions. [2022-11-18 18:31:29,107 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7618135376756067 [2022-11-18 18:31:29,107 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3579 transitions. [2022-11-18 18:31:29,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3579 transitions. [2022-11-18 18:31:29,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:29,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3579 transitions. [2022-11-18 18:31:29,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.55555555555554) internal successors, (3579), 27 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:29,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:29,116 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:29,116 INFO L175 Difference]: Start difference. First operand has 382 places, 265 transitions, 2204 flow. Second operand 27 states and 3579 transitions. [2022-11-18 18:31:29,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 342 transitions, 4020 flow [2022-11-18 18:31:29,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 342 transitions, 3748 flow, removed 119 selfloop flow, removed 20 redundant places. [2022-11-18 18:31:29,229 INFO L231 Difference]: Finished difference. Result has 390 places, 274 transitions, 2465 flow [2022-11-18 18:31:29,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2102, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2465, PETRI_PLACES=390, PETRI_TRANSITIONS=274} [2022-11-18 18:31:29,231 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 233 predicate places. [2022-11-18 18:31:29,231 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 274 transitions, 2465 flow [2022-11-18 18:31:29,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:29,231 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:29,232 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:29,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-18 18:31:29,232 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:29,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:29,233 INFO L85 PathProgramCache]: Analyzing trace with hash -322092174, now seen corresponding path program 9 times [2022-11-18 18:31:29,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:29,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993539982] [2022-11-18 18:31:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:29,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:29,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:29,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:29,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993539982] [2022-11-18 18:31:29,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993539982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:29,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:29,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:29,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049028485] [2022-11-18 18:31:29,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:29,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:29,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:29,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:29,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:29,453 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:29,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 274 transitions, 2465 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:29,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:29,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:29,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:30,447 INFO L130 PetriNetUnfolder]: 324/1685 cut-off events. [2022-11-18 18:31:30,448 INFO L131 PetriNetUnfolder]: For 19776/19887 co-relation queries the response was YES. [2022-11-18 18:31:30,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8387 conditions, 1685 events. 324/1685 cut-off events. For 19776/19887 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12988 event pairs, 210 based on Foata normal form. 9/1622 useless extension candidates. Maximal degree in co-relation 8243. Up to 670 conditions per place. [2022-11-18 18:31:30,470 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 111 selfloop transitions, 40 changer transitions 39/338 dead transitions. [2022-11-18 18:31:30,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 338 transitions, 4090 flow [2022-11-18 18:31:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:31:30,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 18:31:30,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2923 transitions. [2022-11-18 18:31:30,475 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7635841170323929 [2022-11-18 18:31:30,475 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2923 transitions. [2022-11-18 18:31:30,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2923 transitions. [2022-11-18 18:31:30,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:30,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2923 transitions. [2022-11-18 18:31:30,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.86363636363637) internal successors, (2923), 22 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:30,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:30,482 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:30,483 INFO L175 Difference]: Start difference. First operand has 390 places, 274 transitions, 2465 flow. Second operand 22 states and 2923 transitions. [2022-11-18 18:31:30,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 338 transitions, 4090 flow [2022-11-18 18:31:30,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 338 transitions, 3632 flow, removed 209 selfloop flow, removed 16 redundant places. [2022-11-18 18:31:30,595 INFO L231 Difference]: Finished difference. Result has 393 places, 281 transitions, 2579 flow [2022-11-18 18:31:30,595 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2306, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2579, PETRI_PLACES=393, PETRI_TRANSITIONS=281} [2022-11-18 18:31:30,596 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 236 predicate places. [2022-11-18 18:31:30,596 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 281 transitions, 2579 flow [2022-11-18 18:31:30,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:30,596 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:30,596 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:30,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-18 18:31:30,597 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:30,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:30,597 INFO L85 PathProgramCache]: Analyzing trace with hash -197208942, now seen corresponding path program 10 times [2022-11-18 18:31:30,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:30,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008652164] [2022-11-18 18:31:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:30,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:30,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:30,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:30,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008652164] [2022-11-18 18:31:30,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008652164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:30,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:30,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:30,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745874680] [2022-11-18 18:31:30,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:30,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:30,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:30,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:30,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:30,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:30,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 281 transitions, 2579 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:30,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:30,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:30,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:31,612 INFO L130 PetriNetUnfolder]: 309/1647 cut-off events. [2022-11-18 18:31:31,613 INFO L131 PetriNetUnfolder]: For 17338/17439 co-relation queries the response was YES. [2022-11-18 18:31:31,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7946 conditions, 1647 events. 309/1647 cut-off events. For 17338/17439 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12647 event pairs, 205 based on Foata normal form. 9/1587 useless extension candidates. Maximal degree in co-relation 7802. Up to 662 conditions per place. [2022-11-18 18:31:31,633 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 106 selfloop transitions, 29 changer transitions 41/324 dead transitions. [2022-11-18 18:31:31,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 324 transitions, 3575 flow [2022-11-18 18:31:31,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:31:31,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 18:31:31,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2914 transitions. [2022-11-18 18:31:31,636 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7612330198537095 [2022-11-18 18:31:31,636 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2914 transitions. [2022-11-18 18:31:31,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2914 transitions. [2022-11-18 18:31:31,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:31,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2914 transitions. [2022-11-18 18:31:31,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.45454545454547) internal successors, (2914), 22 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:31,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:31,641 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:31,642 INFO L175 Difference]: Start difference. First operand has 393 places, 281 transitions, 2579 flow. Second operand 22 states and 2914 transitions. [2022-11-18 18:31:31,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 324 transitions, 3575 flow [2022-11-18 18:31:31,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 324 transitions, 3317 flow, removed 89 selfloop flow, removed 16 redundant places. [2022-11-18 18:31:31,741 INFO L231 Difference]: Finished difference. Result has 394 places, 262 transitions, 2183 flow [2022-11-18 18:31:31,741 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2183, PETRI_PLACES=394, PETRI_TRANSITIONS=262} [2022-11-18 18:31:31,742 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 237 predicate places. [2022-11-18 18:31:31,742 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 262 transitions, 2183 flow [2022-11-18 18:31:31,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:31,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:31,743 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:31,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-18 18:31:31,743 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:31,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:31,743 INFO L85 PathProgramCache]: Analyzing trace with hash 2034303586, now seen corresponding path program 11 times [2022-11-18 18:31:31,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:31,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321482199] [2022-11-18 18:31:31,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:31,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:31,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:31,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:31,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321482199] [2022-11-18 18:31:31,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321482199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:31,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:31,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:31,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647500277] [2022-11-18 18:31:31,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:31,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:31,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:31,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:31,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:31,923 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:31,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 262 transitions, 2183 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:31,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:31,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:31,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:32,885 INFO L130 PetriNetUnfolder]: 312/1645 cut-off events. [2022-11-18 18:31:32,885 INFO L131 PetriNetUnfolder]: For 16792/16898 co-relation queries the response was YES. [2022-11-18 18:31:32,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7852 conditions, 1645 events. 312/1645 cut-off events. For 16792/16898 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12517 event pairs, 211 based on Foata normal form. 9/1585 useless extension candidates. Maximal degree in co-relation 7712. Up to 660 conditions per place. [2022-11-18 18:31:32,903 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 35 changer transitions 30/314 dead transitions. [2022-11-18 18:31:32,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 314 transitions, 3308 flow [2022-11-18 18:31:32,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:31:32,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 18:31:32,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2661 transitions. [2022-11-18 18:31:32,906 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7646551724137931 [2022-11-18 18:31:32,906 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2661 transitions. [2022-11-18 18:31:32,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2661 transitions. [2022-11-18 18:31:32,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:32,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2661 transitions. [2022-11-18 18:31:32,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.05) internal successors, (2661), 20 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:32,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:32,911 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:32,911 INFO L175 Difference]: Start difference. First operand has 394 places, 262 transitions, 2183 flow. Second operand 20 states and 2661 transitions. [2022-11-18 18:31:32,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 314 transitions, 3308 flow [2022-11-18 18:31:32,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 314 transitions, 3042 flow, removed 52 selfloop flow, removed 22 redundant places. [2022-11-18 18:31:32,994 INFO L231 Difference]: Finished difference. Result has 373 places, 271 transitions, 2297 flow [2022-11-18 18:31:32,994 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2034, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2297, PETRI_PLACES=373, PETRI_TRANSITIONS=271} [2022-11-18 18:31:32,995 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 216 predicate places. [2022-11-18 18:31:32,995 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 271 transitions, 2297 flow [2022-11-18 18:31:32,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:32,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:32,995 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:32,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-18 18:31:32,996 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:32,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:32,996 INFO L85 PathProgramCache]: Analyzing trace with hash -273535262, now seen corresponding path program 12 times [2022-11-18 18:31:32,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:32,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275172169] [2022-11-18 18:31:32,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:32,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:33,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:33,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275172169] [2022-11-18 18:31:33,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275172169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:33,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:33,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:33,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562068346] [2022-11-18 18:31:33,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:33,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:33,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:33,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:33,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:33,249 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:33,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 271 transitions, 2297 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:33,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:33,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:33,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:34,138 INFO L130 PetriNetUnfolder]: 308/1647 cut-off events. [2022-11-18 18:31:34,138 INFO L131 PetriNetUnfolder]: For 15495/15593 co-relation queries the response was YES. [2022-11-18 18:31:34,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7674 conditions, 1647 events. 308/1647 cut-off events. For 15495/15593 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12619 event pairs, 206 based on Foata normal form. 8/1587 useless extension candidates. Maximal degree in co-relation 7540. Up to 660 conditions per place. [2022-11-18 18:31:34,161 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 102 selfloop transitions, 37 changer transitions 31/318 dead transitions. [2022-11-18 18:31:34,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 318 transitions, 3297 flow [2022-11-18 18:31:34,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:31:34,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 18:31:34,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2532 transitions. [2022-11-18 18:31:34,165 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7658802177858439 [2022-11-18 18:31:34,165 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2532 transitions. [2022-11-18 18:31:34,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2532 transitions. [2022-11-18 18:31:34,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:34,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2532 transitions. [2022-11-18 18:31:34,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.26315789473685) internal successors, (2532), 19 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:34,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:34,170 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:34,170 INFO L175 Difference]: Start difference. First operand has 373 places, 271 transitions, 2297 flow. Second operand 19 states and 2532 transitions. [2022-11-18 18:31:34,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 318 transitions, 3297 flow [2022-11-18 18:31:34,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 318 transitions, 3180 flow, removed 38 selfloop flow, removed 6 redundant places. [2022-11-18 18:31:34,269 INFO L231 Difference]: Finished difference. Result has 385 places, 275 transitions, 2406 flow [2022-11-18 18:31:34,270 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2217, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2406, PETRI_PLACES=385, PETRI_TRANSITIONS=275} [2022-11-18 18:31:34,270 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 228 predicate places. [2022-11-18 18:31:34,270 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 275 transitions, 2406 flow [2022-11-18 18:31:34,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:34,270 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:34,270 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:34,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-18 18:31:34,271 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:34,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:34,271 INFO L85 PathProgramCache]: Analyzing trace with hash -584751718, now seen corresponding path program 13 times [2022-11-18 18:31:34,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:34,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258132486] [2022-11-18 18:31:34,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:34,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:34,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:34,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:34,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258132486] [2022-11-18 18:31:34,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258132486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:34,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:34,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:34,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580800879] [2022-11-18 18:31:34,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:34,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:34,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:34,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:34,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:34,497 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:34,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 275 transitions, 2406 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:34,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:34,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:34,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:35,416 INFO L130 PetriNetUnfolder]: 306/1633 cut-off events. [2022-11-18 18:31:35,416 INFO L131 PetriNetUnfolder]: For 15523/15624 co-relation queries the response was YES. [2022-11-18 18:31:35,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7590 conditions, 1633 events. 306/1633 cut-off events. For 15523/15624 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12467 event pairs, 207 based on Foata normal form. 8/1572 useless extension candidates. Maximal degree in co-relation 7450. Up to 658 conditions per place. [2022-11-18 18:31:35,439 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 102 selfloop transitions, 27 changer transitions 41/318 dead transitions. [2022-11-18 18:31:35,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 318 transitions, 3298 flow [2022-11-18 18:31:35,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:31:35,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:31:35,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2790 transitions. [2022-11-18 18:31:35,442 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7635467980295566 [2022-11-18 18:31:35,442 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2790 transitions. [2022-11-18 18:31:35,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2790 transitions. [2022-11-18 18:31:35,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:35,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2790 transitions. [2022-11-18 18:31:35,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.85714285714286) internal successors, (2790), 21 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:35,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:35,447 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:35,447 INFO L175 Difference]: Start difference. First operand has 385 places, 275 transitions, 2406 flow. Second operand 21 states and 2790 transitions. [2022-11-18 18:31:35,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 318 transitions, 3298 flow [2022-11-18 18:31:35,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 318 transitions, 3165 flow, removed 29 selfloop flow, removed 9 redundant places. [2022-11-18 18:31:35,548 INFO L231 Difference]: Finished difference. Result has 396 places, 266 transitions, 2210 flow [2022-11-18 18:31:35,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2303, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2210, PETRI_PLACES=396, PETRI_TRANSITIONS=266} [2022-11-18 18:31:35,549 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 239 predicate places. [2022-11-18 18:31:35,549 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 266 transitions, 2210 flow [2022-11-18 18:31:35,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:35,549 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:35,549 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:35,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-18 18:31:35,550 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:35,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:35,550 INFO L85 PathProgramCache]: Analyzing trace with hash -811941084, now seen corresponding path program 14 times [2022-11-18 18:31:35,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:35,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475938057] [2022-11-18 18:31:35,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:35,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:35,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:35,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:35,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475938057] [2022-11-18 18:31:35,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475938057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:35,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:35,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:35,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573167345] [2022-11-18 18:31:35,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:35,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:35,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:35,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:35,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:35,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:35,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 266 transitions, 2210 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:35,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:35,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:35,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:36,688 INFO L130 PetriNetUnfolder]: 290/1586 cut-off events. [2022-11-18 18:31:36,689 INFO L131 PetriNetUnfolder]: For 15097/15195 co-relation queries the response was YES. [2022-11-18 18:31:36,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7260 conditions, 1586 events. 290/1586 cut-off events. For 15097/15195 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12013 event pairs, 204 based on Foata normal form. 8/1528 useless extension candidates. Maximal degree in co-relation 7117. Up to 648 conditions per place. [2022-11-18 18:31:36,711 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 14 changer transitions 42/296 dead transitions. [2022-11-18 18:31:36,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 296 transitions, 2859 flow [2022-11-18 18:31:36,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:31:36,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 18:31:36,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2910 transitions. [2022-11-18 18:31:36,714 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7601880877742947 [2022-11-18 18:31:36,714 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2910 transitions. [2022-11-18 18:31:36,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2910 transitions. [2022-11-18 18:31:36,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:36,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2910 transitions. [2022-11-18 18:31:36,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.27272727272728) internal successors, (2910), 22 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:36,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:36,719 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:36,719 INFO L175 Difference]: Start difference. First operand has 396 places, 266 transitions, 2210 flow. Second operand 22 states and 2910 transitions. [2022-11-18 18:31:36,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 296 transitions, 2859 flow [2022-11-18 18:31:36,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 296 transitions, 2693 flow, removed 34 selfloop flow, removed 25 redundant places. [2022-11-18 18:31:36,821 INFO L231 Difference]: Finished difference. Result has 380 places, 243 transitions, 1784 flow [2022-11-18 18:31:36,822 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2084, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1784, PETRI_PLACES=380, PETRI_TRANSITIONS=243} [2022-11-18 18:31:36,822 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 223 predicate places. [2022-11-18 18:31:36,822 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 243 transitions, 1784 flow [2022-11-18 18:31:36,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:36,822 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:36,823 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:36,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-18 18:31:36,823 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:36,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:36,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1040234042, now seen corresponding path program 15 times [2022-11-18 18:31:36,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:36,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921831229] [2022-11-18 18:31:36,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:36,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:37,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:37,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921831229] [2022-11-18 18:31:37,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921831229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:37,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:37,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:37,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088634844] [2022-11-18 18:31:37,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:37,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:37,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:37,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:37,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:37,009 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:37,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 243 transitions, 1784 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:37,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:37,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:37,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:37,892 INFO L130 PetriNetUnfolder]: 301/1616 cut-off events. [2022-11-18 18:31:37,893 INFO L131 PetriNetUnfolder]: For 15362/15460 co-relation queries the response was YES. [2022-11-18 18:31:37,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7439 conditions, 1616 events. 301/1616 cut-off events. For 15362/15460 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12264 event pairs, 212 based on Foata normal form. 8/1557 useless extension candidates. Maximal degree in co-relation 7305. Up to 648 conditions per place. [2022-11-18 18:31:37,916 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 96 selfloop transitions, 26 changer transitions 35/305 dead transitions. [2022-11-18 18:31:37,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 305 transitions, 2959 flow [2022-11-18 18:31:37,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 18:31:37,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 18:31:37,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3186 transitions. [2022-11-18 18:31:37,919 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7629310344827587 [2022-11-18 18:31:37,919 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3186 transitions. [2022-11-18 18:31:37,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3186 transitions. [2022-11-18 18:31:37,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:37,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3186 transitions. [2022-11-18 18:31:37,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.75) internal successors, (3186), 24 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:37,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:37,925 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:37,925 INFO L175 Difference]: Start difference. First operand has 380 places, 243 transitions, 1784 flow. Second operand 24 states and 3186 transitions. [2022-11-18 18:31:37,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 305 transitions, 2959 flow [2022-11-18 18:31:38,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 305 transitions, 2771 flow, removed 40 selfloop flow, removed 21 redundant places. [2022-11-18 18:31:38,015 INFO L231 Difference]: Finished difference. Result has 364 places, 254 transitions, 1977 flow [2022-11-18 18:31:38,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1698, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1977, PETRI_PLACES=364, PETRI_TRANSITIONS=254} [2022-11-18 18:31:38,016 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 207 predicate places. [2022-11-18 18:31:38,016 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 254 transitions, 1977 flow [2022-11-18 18:31:38,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:38,016 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:38,017 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:38,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-18 18:31:38,017 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:38,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:38,017 INFO L85 PathProgramCache]: Analyzing trace with hash -851234456, now seen corresponding path program 16 times [2022-11-18 18:31:38,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:38,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723480417] [2022-11-18 18:31:38,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:38,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:38,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:38,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:38,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723480417] [2022-11-18 18:31:38,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723480417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:38,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:38,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:38,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931644207] [2022-11-18 18:31:38,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:38,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:38,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:38,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:38,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:38,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:38,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 254 transitions, 1977 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:38,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:38,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:38,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:39,263 INFO L130 PetriNetUnfolder]: 298/1616 cut-off events. [2022-11-18 18:31:39,263 INFO L131 PetriNetUnfolder]: For 14935/15036 co-relation queries the response was YES. [2022-11-18 18:31:39,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7387 conditions, 1616 events. 298/1616 cut-off events. For 14935/15036 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12321 event pairs, 212 based on Foata normal form. 9/1559 useless extension candidates. Maximal degree in co-relation 7253. Up to 650 conditions per place. [2022-11-18 18:31:39,281 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 95 selfloop transitions, 28 changer transitions 36/307 dead transitions. [2022-11-18 18:31:39,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 307 transitions, 3044 flow [2022-11-18 18:31:39,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 18:31:39,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-18 18:31:39,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3055 transitions. [2022-11-18 18:31:39,284 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.763368315842079 [2022-11-18 18:31:39,284 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3055 transitions. [2022-11-18 18:31:39,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3055 transitions. [2022-11-18 18:31:39,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:39,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3055 transitions. [2022-11-18 18:31:39,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.82608695652175) internal successors, (3055), 23 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:39,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:39,289 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:39,290 INFO L175 Difference]: Start difference. First operand has 364 places, 254 transitions, 1977 flow. Second operand 23 states and 3055 transitions. [2022-11-18 18:31:39,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 307 transitions, 3044 flow [2022-11-18 18:31:39,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 307 transitions, 2897 flow, removed 68 selfloop flow, removed 11 redundant places. [2022-11-18 18:31:39,372 INFO L231 Difference]: Finished difference. Result has 376 places, 258 transitions, 2104 flow [2022-11-18 18:31:39,372 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2104, PETRI_PLACES=376, PETRI_TRANSITIONS=258} [2022-11-18 18:31:39,372 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 219 predicate places. [2022-11-18 18:31:39,373 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 258 transitions, 2104 flow [2022-11-18 18:31:39,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:39,373 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:39,373 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:39,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-18 18:31:39,373 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:39,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:39,373 INFO L85 PathProgramCache]: Analyzing trace with hash 620580004, now seen corresponding path program 17 times [2022-11-18 18:31:39,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:39,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316348195] [2022-11-18 18:31:39,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:39,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:39,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:39,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:39,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316348195] [2022-11-18 18:31:39,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316348195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:39,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:39,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:39,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918626620] [2022-11-18 18:31:39,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:39,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:39,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:39,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:39,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:39,611 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:39,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 258 transitions, 2104 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:39,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:39,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:39,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:40,414 INFO L130 PetriNetUnfolder]: 294/1595 cut-off events. [2022-11-18 18:31:40,415 INFO L131 PetriNetUnfolder]: For 14891/14989 co-relation queries the response was YES. [2022-11-18 18:31:40,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7288 conditions, 1595 events. 294/1595 cut-off events. For 14891/14989 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12117 event pairs, 214 based on Foata normal form. 7/1536 useless extension candidates. Maximal degree in co-relation 7148. Up to 648 conditions per place. [2022-11-18 18:31:40,433 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 94 selfloop transitions, 30 changer transitions 30/302 dead transitions. [2022-11-18 18:31:40,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 302 transitions, 3030 flow [2022-11-18 18:31:40,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:31:40,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 18:31:40,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2664 transitions. [2022-11-18 18:31:40,436 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-11-18 18:31:40,436 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2664 transitions. [2022-11-18 18:31:40,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2664 transitions. [2022-11-18 18:31:40,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:40,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2664 transitions. [2022-11-18 18:31:40,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.2) internal successors, (2664), 20 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:40,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:40,440 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:40,440 INFO L175 Difference]: Start difference. First operand has 376 places, 258 transitions, 2104 flow. Second operand 20 states and 2664 transitions. [2022-11-18 18:31:40,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 302 transitions, 3030 flow [2022-11-18 18:31:40,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 302 transitions, 2868 flow, removed 59 selfloop flow, removed 14 redundant places. [2022-11-18 18:31:40,559 INFO L231 Difference]: Finished difference. Result has 376 places, 265 transitions, 2225 flow [2022-11-18 18:31:40,560 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2013, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2225, PETRI_PLACES=376, PETRI_TRANSITIONS=265} [2022-11-18 18:31:40,560 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 219 predicate places. [2022-11-18 18:31:40,560 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 265 transitions, 2225 flow [2022-11-18 18:31:40,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:40,561 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:40,561 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:40,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-18 18:31:40,562 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:40,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:40,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1505839254, now seen corresponding path program 18 times [2022-11-18 18:31:40,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:40,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042534655] [2022-11-18 18:31:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:40,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:40,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:40,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:40,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042534655] [2022-11-18 18:31:40,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042534655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:40,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:40,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:40,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67212874] [2022-11-18 18:31:40,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:40,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:40,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:40,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:40,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:40,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:40,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 265 transitions, 2225 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:40,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:40,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:40,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:41,604 INFO L130 PetriNetUnfolder]: 298/1613 cut-off events. [2022-11-18 18:31:41,604 INFO L131 PetriNetUnfolder]: For 14608/14707 co-relation queries the response was YES. [2022-11-18 18:31:41,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7391 conditions, 1613 events. 298/1613 cut-off events. For 14608/14707 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12208 event pairs, 213 based on Foata normal form. 7/1554 useless extension candidates. Maximal degree in co-relation 7254. Up to 648 conditions per place. [2022-11-18 18:31:41,626 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 94 selfloop transitions, 38 changer transitions 30/310 dead transitions. [2022-11-18 18:31:41,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 310 transitions, 3197 flow [2022-11-18 18:31:41,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:31:41,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 18:31:41,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2533 transitions. [2022-11-18 18:31:41,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7661826981246219 [2022-11-18 18:31:41,632 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2533 transitions. [2022-11-18 18:31:41,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2533 transitions. [2022-11-18 18:31:41,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:41,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2533 transitions. [2022-11-18 18:31:41,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.31578947368422) internal successors, (2533), 19 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:41,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:41,637 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:41,637 INFO L175 Difference]: Start difference. First operand has 376 places, 265 transitions, 2225 flow. Second operand 19 states and 2533 transitions. [2022-11-18 18:31:41,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 310 transitions, 3197 flow [2022-11-18 18:31:41,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 310 transitions, 3060 flow, removed 46 selfloop flow, removed 7 redundant places. [2022-11-18 18:31:41,729 INFO L231 Difference]: Finished difference. Result has 387 places, 273 transitions, 2404 flow [2022-11-18 18:31:41,729 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2138, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2404, PETRI_PLACES=387, PETRI_TRANSITIONS=273} [2022-11-18 18:31:41,730 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 230 predicate places. [2022-11-18 18:31:41,730 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 273 transitions, 2404 flow [2022-11-18 18:31:41,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:41,730 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:41,731 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:41,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-18 18:31:41,731 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:41,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:41,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1500998160, now seen corresponding path program 19 times [2022-11-18 18:31:41,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:41,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276036941] [2022-11-18 18:31:41,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:41,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:42,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:42,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:42,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276036941] [2022-11-18 18:31:42,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276036941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:42,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:42,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:42,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575356936] [2022-11-18 18:31:42,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:42,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:42,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:42,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:42,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:42,008 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:42,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 273 transitions, 2404 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:42,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:42,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:42,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:42,913 INFO L130 PetriNetUnfolder]: 294/1612 cut-off events. [2022-11-18 18:31:42,913 INFO L131 PetriNetUnfolder]: For 14646/14744 co-relation queries the response was YES. [2022-11-18 18:31:42,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7432 conditions, 1612 events. 294/1612 cut-off events. For 14646/14744 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12350 event pairs, 207 based on Foata normal form. 8/1554 useless extension candidates. Maximal degree in co-relation 7289. Up to 648 conditions per place. [2022-11-18 18:31:42,951 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 101 selfloop transitions, 34 changer transitions 31/314 dead transitions. [2022-11-18 18:31:42,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 314 transitions, 3328 flow [2022-11-18 18:31:42,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:31:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 18:31:42,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2664 transitions. [2022-11-18 18:31:42,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-11-18 18:31:42,954 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2664 transitions. [2022-11-18 18:31:42,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2664 transitions. [2022-11-18 18:31:42,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:42,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2664 transitions. [2022-11-18 18:31:42,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.2) internal successors, (2664), 20 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:42,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:42,960 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:42,961 INFO L175 Difference]: Start difference. First operand has 387 places, 273 transitions, 2404 flow. Second operand 20 states and 2664 transitions. [2022-11-18 18:31:42,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 314 transitions, 3328 flow [2022-11-18 18:31:43,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 314 transitions, 3198 flow, removed 28 selfloop flow, removed 9 redundant places. [2022-11-18 18:31:43,069 INFO L231 Difference]: Finished difference. Result has 397 places, 277 transitions, 2497 flow [2022-11-18 18:31:43,070 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2497, PETRI_PLACES=397, PETRI_TRANSITIONS=277} [2022-11-18 18:31:43,070 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 240 predicate places. [2022-11-18 18:31:43,070 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 277 transitions, 2497 flow [2022-11-18 18:31:43,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:43,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:43,071 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:43,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-18 18:31:43,071 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:43,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:43,072 INFO L85 PathProgramCache]: Analyzing trace with hash -2038498162, now seen corresponding path program 20 times [2022-11-18 18:31:43,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:43,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713192331] [2022-11-18 18:31:43,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:43,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:43,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:43,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713192331] [2022-11-18 18:31:43,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713192331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:43,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:43,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:43,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308562394] [2022-11-18 18:31:43,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:43,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:43,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:43,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:43,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:43,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:43,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 277 transitions, 2497 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:43,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:43,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:43,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:44,301 INFO L130 PetriNetUnfolder]: 288/1589 cut-off events. [2022-11-18 18:31:44,301 INFO L131 PetriNetUnfolder]: For 14326/14421 co-relation queries the response was YES. [2022-11-18 18:31:44,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7230 conditions, 1589 events. 288/1589 cut-off events. For 14326/14421 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12061 event pairs, 210 based on Foata normal form. 6/1529 useless extension candidates. Maximal degree in co-relation 7083. Up to 646 conditions per place. [2022-11-18 18:31:44,326 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 19 changer transitions 44/308 dead transitions. [2022-11-18 18:31:44,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 308 transitions, 3169 flow [2022-11-18 18:31:44,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:31:44,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 18:31:44,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2022-11-18 18:31:44,329 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2022-11-18 18:31:44,329 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2022-11-18 18:31:44,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2022-11-18 18:31:44,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:44,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2022-11-18 18:31:44,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:44,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:44,334 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:44,334 INFO L175 Difference]: Start difference. First operand has 397 places, 277 transitions, 2497 flow. Second operand 20 states and 2663 transitions. [2022-11-18 18:31:44,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 308 transitions, 3169 flow [2022-11-18 18:31:44,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 308 transitions, 3058 flow, removed 34 selfloop flow, removed 7 redundant places. [2022-11-18 18:31:44,432 INFO L231 Difference]: Finished difference. Result has 406 places, 260 transitions, 2144 flow [2022-11-18 18:31:44,432 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2404, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2144, PETRI_PLACES=406, PETRI_TRANSITIONS=260} [2022-11-18 18:31:44,432 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 249 predicate places. [2022-11-18 18:31:44,432 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 260 transitions, 2144 flow [2022-11-18 18:31:44,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:44,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:44,433 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:44,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-11-18 18:31:44,433 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:44,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:44,433 INFO L85 PathProgramCache]: Analyzing trace with hash -620360426, now seen corresponding path program 21 times [2022-11-18 18:31:44,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:44,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451956875] [2022-11-18 18:31:44,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:44,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:44,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:44,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451956875] [2022-11-18 18:31:44,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451956875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:44,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:44,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:44,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498575652] [2022-11-18 18:31:44,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:44,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:44,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:44,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:44,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:44,675 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:44,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 260 transitions, 2144 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:44,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:44,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:44,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:45,538 INFO L130 PetriNetUnfolder]: 284/1560 cut-off events. [2022-11-18 18:31:45,538 INFO L131 PetriNetUnfolder]: For 13660/13755 co-relation queries the response was YES. [2022-11-18 18:31:45,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6997 conditions, 1560 events. 284/1560 cut-off events. For 13660/13755 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11775 event pairs, 210 based on Foata normal form. 6/1500 useless extension candidates. Maximal degree in co-relation 6847. Up to 647 conditions per place. [2022-11-18 18:31:45,559 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 87 selfloop transitions, 20 changer transitions 40/295 dead transitions. [2022-11-18 18:31:45,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 295 transitions, 2875 flow [2022-11-18 18:31:45,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:31:45,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 18:31:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2919 transitions. [2022-11-18 18:31:45,561 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.762539184952978 [2022-11-18 18:31:45,561 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2919 transitions. [2022-11-18 18:31:45,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2919 transitions. [2022-11-18 18:31:45,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:45,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2919 transitions. [2022-11-18 18:31:45,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.6818181818182) internal successors, (2919), 22 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:45,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:45,566 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:45,566 INFO L175 Difference]: Start difference. First operand has 406 places, 260 transitions, 2144 flow. Second operand 22 states and 2919 transitions. [2022-11-18 18:31:45,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 295 transitions, 2875 flow [2022-11-18 18:31:45,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 295 transitions, 2653 flow, removed 35 selfloop flow, removed 27 redundant places. [2022-11-18 18:31:45,664 INFO L231 Difference]: Finished difference. Result has 386 places, 251 transitions, 1906 flow [2022-11-18 18:31:45,665 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1906, PETRI_PLACES=386, PETRI_TRANSITIONS=251} [2022-11-18 18:31:45,665 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 229 predicate places. [2022-11-18 18:31:45,665 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 251 transitions, 1906 flow [2022-11-18 18:31:45,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:45,666 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:45,666 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:45,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-11-18 18:31:45,666 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:45,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:45,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1661264528, now seen corresponding path program 22 times [2022-11-18 18:31:45,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:45,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734458770] [2022-11-18 18:31:45,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:45,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:45,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:45,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734458770] [2022-11-18 18:31:45,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734458770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:45,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:45,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:45,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885578666] [2022-11-18 18:31:45,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:45,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:45,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:45,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:45,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:45,870 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:45,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 251 transitions, 1906 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:45,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:45,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:45,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:46,613 INFO L130 PetriNetUnfolder]: 267/1517 cut-off events. [2022-11-18 18:31:46,613 INFO L131 PetriNetUnfolder]: For 12696/12794 co-relation queries the response was YES. [2022-11-18 18:31:46,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6576 conditions, 1517 events. 267/1517 cut-off events. For 12696/12794 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11381 event pairs, 203 based on Foata normal form. 8/1462 useless extension candidates. Maximal degree in co-relation 6434. Up to 635 conditions per place. [2022-11-18 18:31:46,635 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 76 selfloop transitions, 4 changer transitions 44/272 dead transitions. [2022-11-18 18:31:46,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 272 transitions, 2348 flow [2022-11-18 18:31:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:31:46,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:31:46,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2778 transitions. [2022-11-18 18:31:46,638 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7602627257799671 [2022-11-18 18:31:46,638 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2778 transitions. [2022-11-18 18:31:46,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2778 transitions. [2022-11-18 18:31:46,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:46,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2778 transitions. [2022-11-18 18:31:46,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.28571428571428) internal successors, (2778), 21 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:46,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:46,643 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:46,643 INFO L175 Difference]: Start difference. First operand has 386 places, 251 transitions, 1906 flow. Second operand 21 states and 2778 transitions. [2022-11-18 18:31:46,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 272 transitions, 2348 flow [2022-11-18 18:31:46,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 272 transitions, 2221 flow, removed 31 selfloop flow, removed 23 redundant places. [2022-11-18 18:31:46,729 INFO L231 Difference]: Finished difference. Result has 368 places, 224 transitions, 1443 flow [2022-11-18 18:31:46,729 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1804, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1443, PETRI_PLACES=368, PETRI_TRANSITIONS=224} [2022-11-18 18:31:46,730 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 211 predicate places. [2022-11-18 18:31:46,730 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 224 transitions, 1443 flow [2022-11-18 18:31:46,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:46,730 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:46,731 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:46,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-11-18 18:31:46,731 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:46,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:46,732 INFO L85 PathProgramCache]: Analyzing trace with hash -882958032, now seen corresponding path program 23 times [2022-11-18 18:31:46,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:46,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344984008] [2022-11-18 18:31:46,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:46,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:46,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:46,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:46,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344984008] [2022-11-18 18:31:46,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344984008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:46,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:46,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:46,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862463063] [2022-11-18 18:31:46,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:46,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:46,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:46,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:46,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:46,963 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:46,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 224 transitions, 1443 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:46,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:46,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:46,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:48,033 INFO L130 PetriNetUnfolder]: 286/1590 cut-off events. [2022-11-18 18:31:48,033 INFO L131 PetriNetUnfolder]: For 12638/12733 co-relation queries the response was YES. [2022-11-18 18:31:48,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6826 conditions, 1590 events. 286/1590 cut-off events. For 12638/12733 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12089 event pairs, 204 based on Foata normal form. 6/1534 useless extension candidates. Maximal degree in co-relation 6696. Up to 645 conditions per place. [2022-11-18 18:31:48,050 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 23 changer transitions 42/303 dead transitions. [2022-11-18 18:31:48,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 303 transitions, 2662 flow [2022-11-18 18:31:48,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 18:31:48,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 18:31:48,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3705 transitions. [2022-11-18 18:31:48,053 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7604679802955665 [2022-11-18 18:31:48,053 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3705 transitions. [2022-11-18 18:31:48,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3705 transitions. [2022-11-18 18:31:48,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:48,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3705 transitions. [2022-11-18 18:31:48,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.32142857142858) internal successors, (3705), 28 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:48,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:48,061 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:48,061 INFO L175 Difference]: Start difference. First operand has 368 places, 224 transitions, 1443 flow. Second operand 28 states and 3705 transitions. [2022-11-18 18:31:48,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 303 transitions, 2662 flow [2022-11-18 18:31:48,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 303 transitions, 2477 flow, removed 48 selfloop flow, removed 21 redundant places. [2022-11-18 18:31:48,122 INFO L231 Difference]: Finished difference. Result has 355 places, 237 transitions, 1644 flow [2022-11-18 18:31:48,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1644, PETRI_PLACES=355, PETRI_TRANSITIONS=237} [2022-11-18 18:31:48,123 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 198 predicate places. [2022-11-18 18:31:48,123 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 237 transitions, 1644 flow [2022-11-18 18:31:48,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:48,124 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:48,124 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:48,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-11-18 18:31:48,124 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:48,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:48,125 INFO L85 PathProgramCache]: Analyzing trace with hash -248660076, now seen corresponding path program 24 times [2022-11-18 18:31:48,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:48,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944362770] [2022-11-18 18:31:48,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:48,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:48,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:48,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944362770] [2022-11-18 18:31:48,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944362770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:48,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:48,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:48,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962755344] [2022-11-18 18:31:48,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:48,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:48,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:48,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:48,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:48,324 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:48,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 237 transitions, 1644 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:48,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:48,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:48,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:49,222 INFO L130 PetriNetUnfolder]: 283/1564 cut-off events. [2022-11-18 18:31:49,223 INFO L131 PetriNetUnfolder]: For 12369/12464 co-relation queries the response was YES. [2022-11-18 18:31:49,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6805 conditions, 1564 events. 283/1564 cut-off events. For 12369/12464 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11852 event pairs, 208 based on Foata normal form. 6/1505 useless extension candidates. Maximal degree in co-relation 6671. Up to 643 conditions per place. [2022-11-18 18:31:49,245 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 86 selfloop transitions, 25 changer transitions 42/301 dead transitions. [2022-11-18 18:31:49,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 301 transitions, 2756 flow [2022-11-18 18:31:49,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 18:31:49,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-18 18:31:49,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3572 transitions. [2022-11-18 18:31:49,248 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7603235419327373 [2022-11-18 18:31:49,249 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3572 transitions. [2022-11-18 18:31:49,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3572 transitions. [2022-11-18 18:31:49,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:49,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3572 transitions. [2022-11-18 18:31:49,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.2962962962963) internal successors, (3572), 27 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:49,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:49,255 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:49,255 INFO L175 Difference]: Start difference. First operand has 355 places, 237 transitions, 1644 flow. Second operand 27 states and 3572 transitions. [2022-11-18 18:31:49,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 301 transitions, 2756 flow [2022-11-18 18:31:49,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 301 transitions, 2596 flow, removed 72 selfloop flow, removed 17 redundant places. [2022-11-18 18:31:49,325 INFO L231 Difference]: Finished difference. Result has 366 places, 241 transitions, 1794 flow [2022-11-18 18:31:49,326 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1596, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1794, PETRI_PLACES=366, PETRI_TRANSITIONS=241} [2022-11-18 18:31:49,326 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 209 predicate places. [2022-11-18 18:31:49,326 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 241 transitions, 1794 flow [2022-11-18 18:31:49,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:49,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:49,327 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:49,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-11-18 18:31:49,327 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:49,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:49,327 INFO L85 PathProgramCache]: Analyzing trace with hash -322226166, now seen corresponding path program 25 times [2022-11-18 18:31:49,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:49,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85318463] [2022-11-18 18:31:49,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:49,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:49,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:49,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:49,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85318463] [2022-11-18 18:31:49,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85318463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:49,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:49,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:49,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075576893] [2022-11-18 18:31:49,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:49,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:49,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:49,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:49,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:49,554 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:49,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 241 transitions, 1794 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:49,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:49,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:49,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:50,449 INFO L130 PetriNetUnfolder]: 278/1546 cut-off events. [2022-11-18 18:31:50,449 INFO L131 PetriNetUnfolder]: For 13024/13119 co-relation queries the response was YES. [2022-11-18 18:31:50,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6862 conditions, 1546 events. 278/1546 cut-off events. For 13024/13119 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11689 event pairs, 203 based on Foata normal form. 6/1488 useless extension candidates. Maximal degree in co-relation 6722. Up to 646 conditions per place. [2022-11-18 18:31:50,491 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 88 selfloop transitions, 27 changer transitions 37/300 dead transitions. [2022-11-18 18:31:50,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 300 transitions, 2882 flow [2022-11-18 18:31:50,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 18:31:50,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 18:31:50,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3183 transitions. [2022-11-18 18:31:50,495 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7622126436781609 [2022-11-18 18:31:50,496 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3183 transitions. [2022-11-18 18:31:50,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3183 transitions. [2022-11-18 18:31:50,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:50,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3183 transitions. [2022-11-18 18:31:50,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.625) internal successors, (3183), 24 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:50,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:50,506 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:50,506 INFO L175 Difference]: Start difference. First operand has 366 places, 241 transitions, 1794 flow. Second operand 24 states and 3183 transitions. [2022-11-18 18:31:50,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 300 transitions, 2882 flow [2022-11-18 18:31:50,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 300 transitions, 2670 flow, removed 87 selfloop flow, removed 19 redundant places. [2022-11-18 18:31:50,638 INFO L231 Difference]: Finished difference. Result has 366 places, 248 transitions, 1924 flow [2022-11-18 18:31:50,639 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1707, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1924, PETRI_PLACES=366, PETRI_TRANSITIONS=248} [2022-11-18 18:31:50,639 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 209 predicate places. [2022-11-18 18:31:50,640 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 248 transitions, 1924 flow [2022-11-18 18:31:50,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:50,640 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:50,641 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:50,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-11-18 18:31:50,641 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:50,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:50,642 INFO L85 PathProgramCache]: Analyzing trace with hash -693724302, now seen corresponding path program 26 times [2022-11-18 18:31:50,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:50,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095534111] [2022-11-18 18:31:50,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:50,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:50,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:50,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:50,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095534111] [2022-11-18 18:31:50,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095534111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:50,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:50,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:50,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733493642] [2022-11-18 18:31:50,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:50,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:50,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:50,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:50,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:50,867 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:50,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 248 transitions, 1924 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:50,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:50,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:50,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:51,785 INFO L130 PetriNetUnfolder]: 290/1588 cut-off events. [2022-11-18 18:31:51,785 INFO L131 PetriNetUnfolder]: For 13204/13302 co-relation queries the response was YES. [2022-11-18 18:31:51,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7125 conditions, 1588 events. 290/1588 cut-off events. For 13204/13302 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12008 event pairs, 212 based on Foata normal form. 7/1531 useless extension candidates. Maximal degree in co-relation 6987. Up to 657 conditions per place. [2022-11-18 18:31:51,807 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 85 selfloop transitions, 37 changer transitions 36/306 dead transitions. [2022-11-18 18:31:51,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 306 transitions, 3039 flow [2022-11-18 18:31:51,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 18:31:51,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-18 18:31:51,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3050 transitions. [2022-11-18 18:31:51,811 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7621189405297352 [2022-11-18 18:31:51,811 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3050 transitions. [2022-11-18 18:31:51,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3050 transitions. [2022-11-18 18:31:51,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:51,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3050 transitions. [2022-11-18 18:31:51,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.6086956521739) internal successors, (3050), 23 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:51,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:51,819 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:51,819 INFO L175 Difference]: Start difference. First operand has 366 places, 248 transitions, 1924 flow. Second operand 23 states and 3050 transitions. [2022-11-18 18:31:51,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 306 transitions, 3039 flow [2022-11-18 18:31:51,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 306 transitions, 2849 flow, removed 78 selfloop flow, removed 13 redundant places. [2022-11-18 18:31:51,949 INFO L231 Difference]: Finished difference. Result has 376 places, 258 transitions, 2138 flow [2022-11-18 18:31:51,949 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1839, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2138, PETRI_PLACES=376, PETRI_TRANSITIONS=258} [2022-11-18 18:31:51,950 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 219 predicate places. [2022-11-18 18:31:51,950 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 258 transitions, 2138 flow [2022-11-18 18:31:51,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:51,950 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:51,951 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:51,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-11-18 18:31:51,951 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:51,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:51,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2124829304, now seen corresponding path program 27 times [2022-11-18 18:31:51,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:51,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750946771] [2022-11-18 18:31:51,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:51,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:52,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:52,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:52,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750946771] [2022-11-18 18:31:52,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750946771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:52,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:52,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:52,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943555677] [2022-11-18 18:31:52,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:52,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:52,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:52,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:52,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:52,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:52,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 258 transitions, 2138 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:52,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:52,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:52,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:53,112 INFO L130 PetriNetUnfolder]: 287/1576 cut-off events. [2022-11-18 18:31:53,112 INFO L131 PetriNetUnfolder]: For 13420/13521 co-relation queries the response was YES. [2022-11-18 18:31:53,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7146 conditions, 1576 events. 287/1576 cut-off events. For 13420/13521 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11912 event pairs, 208 based on Foata normal form. 8/1520 useless extension candidates. Maximal degree in co-relation 7003. Up to 655 conditions per place. [2022-11-18 18:31:53,134 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 94 selfloop transitions, 33 changer transitions 37/312 dead transitions. [2022-11-18 18:31:53,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 312 transitions, 3252 flow [2022-11-18 18:31:53,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 18:31:53,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 18:31:53,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3183 transitions. [2022-11-18 18:31:53,137 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7622126436781609 [2022-11-18 18:31:53,137 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3183 transitions. [2022-11-18 18:31:53,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3183 transitions. [2022-11-18 18:31:53,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:53,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3183 transitions. [2022-11-18 18:31:53,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.625) internal successors, (3183), 24 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:53,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:53,143 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:53,143 INFO L175 Difference]: Start difference. First operand has 376 places, 258 transitions, 2138 flow. Second operand 24 states and 3183 transitions. [2022-11-18 18:31:53,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 312 transitions, 3252 flow [2022-11-18 18:31:53,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 312 transitions, 3038 flow, removed 77 selfloop flow, removed 14 redundant places. [2022-11-18 18:31:53,219 INFO L231 Difference]: Finished difference. Result has 386 places, 262 transitions, 2237 flow [2022-11-18 18:31:53,220 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2040, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2237, PETRI_PLACES=386, PETRI_TRANSITIONS=262} [2022-11-18 18:31:53,220 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 229 predicate places. [2022-11-18 18:31:53,220 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 262 transitions, 2237 flow [2022-11-18 18:31:53,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:53,220 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:53,221 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:53,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-11-18 18:31:53,221 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:53,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:53,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1778046302, now seen corresponding path program 28 times [2022-11-18 18:31:53,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:53,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568171131] [2022-11-18 18:31:53,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:53,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:53,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:53,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568171131] [2022-11-18 18:31:53,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568171131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:53,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:53,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:53,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808416755] [2022-11-18 18:31:53,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:53,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:53,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:53,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:53,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:53,437 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:53,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 262 transitions, 2237 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:53,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:53,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:53,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:54,242 INFO L130 PetriNetUnfolder]: 281/1564 cut-off events. [2022-11-18 18:31:54,242 INFO L131 PetriNetUnfolder]: For 13226/13327 co-relation queries the response was YES. [2022-11-18 18:31:54,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7033 conditions, 1564 events. 281/1564 cut-off events. For 13226/13327 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11818 event pairs, 204 based on Foata normal form. 8/1509 useless extension candidates. Maximal degree in co-relation 6886. Up to 657 conditions per place. [2022-11-18 18:31:54,263 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 91 selfloop transitions, 35 changer transitions 32/306 dead transitions. [2022-11-18 18:31:54,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 306 transitions, 3116 flow [2022-11-18 18:31:54,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:31:54,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 18:31:54,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2661 transitions. [2022-11-18 18:31:54,266 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7646551724137931 [2022-11-18 18:31:54,266 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2661 transitions. [2022-11-18 18:31:54,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2661 transitions. [2022-11-18 18:31:54,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:54,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2661 transitions. [2022-11-18 18:31:54,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.05) internal successors, (2661), 20 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:54,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:54,270 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:54,270 INFO L175 Difference]: Start difference. First operand has 386 places, 262 transitions, 2237 flow. Second operand 20 states and 2661 transitions. [2022-11-18 18:31:54,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 306 transitions, 3116 flow [2022-11-18 18:31:54,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 306 transitions, 2976 flow, removed 55 selfloop flow, removed 12 redundant places. [2022-11-18 18:31:54,344 INFO L231 Difference]: Finished difference. Result has 387 places, 269 transitions, 2372 flow [2022-11-18 18:31:54,344 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2154, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2372, PETRI_PLACES=387, PETRI_TRANSITIONS=269} [2022-11-18 18:31:54,344 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 230 predicate places. [2022-11-18 18:31:54,344 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 269 transitions, 2372 flow [2022-11-18 18:31:54,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:54,345 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:54,345 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:54,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-11-18 18:31:54,345 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:54,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:54,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1027812592, now seen corresponding path program 29 times [2022-11-18 18:31:54,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:54,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346045986] [2022-11-18 18:31:54,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:54,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:54,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:54,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:54,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346045986] [2022-11-18 18:31:54,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346045986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:54,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:54,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:54,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172041405] [2022-11-18 18:31:54,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:54,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:54,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:54,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:54,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:54,518 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:54,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 269 transitions, 2372 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:54,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:54,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:54,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:55,306 INFO L130 PetriNetUnfolder]: 285/1579 cut-off events. [2022-11-18 18:31:55,306 INFO L131 PetriNetUnfolder]: For 13050/13153 co-relation queries the response was YES. [2022-11-18 18:31:55,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7147 conditions, 1579 events. 285/1579 cut-off events. For 13050/13153 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12017 event pairs, 205 based on Foata normal form. 8/1523 useless extension candidates. Maximal degree in co-relation 7001. Up to 660 conditions per place. [2022-11-18 18:31:55,328 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 87 selfloop transitions, 48 changer transitions 31/314 dead transitions. [2022-11-18 18:31:55,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 314 transitions, 3357 flow [2022-11-18 18:31:55,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:31:55,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 18:31:55,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2528 transitions. [2022-11-18 18:31:55,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.764670296430732 [2022-11-18 18:31:55,331 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2528 transitions. [2022-11-18 18:31:55,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2528 transitions. [2022-11-18 18:31:55,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:55,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2528 transitions. [2022-11-18 18:31:55,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.05263157894737) internal successors, (2528), 19 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:55,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:55,335 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:55,335 INFO L175 Difference]: Start difference. First operand has 387 places, 269 transitions, 2372 flow. Second operand 19 states and 2528 transitions. [2022-11-18 18:31:55,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 314 transitions, 3357 flow [2022-11-18 18:31:55,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 314 transitions, 3207 flow, removed 53 selfloop flow, removed 7 redundant places. [2022-11-18 18:31:55,418 INFO L231 Difference]: Finished difference. Result has 398 places, 277 transitions, 2563 flow [2022-11-18 18:31:55,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2274, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2563, PETRI_PLACES=398, PETRI_TRANSITIONS=277} [2022-11-18 18:31:55,419 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 241 predicate places. [2022-11-18 18:31:55,419 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 277 transitions, 2563 flow [2022-11-18 18:31:55,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:55,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:55,420 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:55,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-11-18 18:31:55,420 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:55,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:55,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1033380396, now seen corresponding path program 30 times [2022-11-18 18:31:55,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:55,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794497015] [2022-11-18 18:31:55,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:55,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:55,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:55,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:55,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794497015] [2022-11-18 18:31:55,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794497015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:55,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:55,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:55,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838594607] [2022-11-18 18:31:55,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:55,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:55,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:55,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:55,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:55,622 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:55,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 277 transitions, 2563 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:55,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:55,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:55,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:56,399 INFO L130 PetriNetUnfolder]: 282/1575 cut-off events. [2022-11-18 18:31:56,399 INFO L131 PetriNetUnfolder]: For 13030/13129 co-relation queries the response was YES. [2022-11-18 18:31:56,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7151 conditions, 1575 events. 282/1575 cut-off events. For 13030/13129 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11944 event pairs, 203 based on Foata normal form. 7/1518 useless extension candidates. Maximal degree in co-relation 6999. Up to 658 conditions per place. [2022-11-18 18:31:56,422 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 94 selfloop transitions, 44 changer transitions 31/317 dead transitions. [2022-11-18 18:31:56,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 317 transitions, 3472 flow [2022-11-18 18:31:56,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:31:56,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 18:31:56,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2659 transitions. [2022-11-18 18:31:56,424 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.764080459770115 [2022-11-18 18:31:56,425 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2659 transitions. [2022-11-18 18:31:56,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2659 transitions. [2022-11-18 18:31:56,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:56,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2659 transitions. [2022-11-18 18:31:56,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.95) internal successors, (2659), 20 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:56,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:56,430 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:56,430 INFO L175 Difference]: Start difference. First operand has 398 places, 277 transitions, 2563 flow. Second operand 20 states and 2659 transitions. [2022-11-18 18:31:56,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 317 transitions, 3472 flow [2022-11-18 18:31:56,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 317 transitions, 3317 flow, removed 31 selfloop flow, removed 9 redundant places. [2022-11-18 18:31:56,521 INFO L231 Difference]: Finished difference. Result has 409 places, 283 transitions, 2694 flow [2022-11-18 18:31:56,521 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2694, PETRI_PLACES=409, PETRI_TRANSITIONS=283} [2022-11-18 18:31:56,522 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 252 predicate places. [2022-11-18 18:31:56,522 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 283 transitions, 2694 flow [2022-11-18 18:31:56,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:56,522 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:56,522 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:56,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-11-18 18:31:56,522 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:56,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:56,523 INFO L85 PathProgramCache]: Analyzing trace with hash -205598158, now seen corresponding path program 31 times [2022-11-18 18:31:56,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:56,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464182333] [2022-11-18 18:31:56,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:56,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:56,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:56,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:56,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464182333] [2022-11-18 18:31:56,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464182333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:56,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:56,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:56,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773402561] [2022-11-18 18:31:56,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:56,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:56,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:56,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:56,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:56,715 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:56,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 283 transitions, 2694 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:56,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:56,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:56,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:57,589 INFO L130 PetriNetUnfolder]: 279/1572 cut-off events. [2022-11-18 18:31:57,589 INFO L131 PetriNetUnfolder]: For 13103/13198 co-relation queries the response was YES. [2022-11-18 18:31:57,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7133 conditions, 1572 events. 279/1572 cut-off events. For 13103/13198 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11907 event pairs, 197 based on Foata normal form. 6/1515 useless extension candidates. Maximal degree in co-relation 6976. Up to 654 conditions per place. [2022-11-18 18:31:57,613 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 104 selfloop transitions, 38 changer transitions 32/322 dead transitions. [2022-11-18 18:31:57,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 322 transitions, 3608 flow [2022-11-18 18:31:57,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:31:57,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 18:31:57,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2661 transitions. [2022-11-18 18:31:57,615 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7646551724137931 [2022-11-18 18:31:57,615 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2661 transitions. [2022-11-18 18:31:57,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2661 transitions. [2022-11-18 18:31:57,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:57,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2661 transitions. [2022-11-18 18:31:57,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.05) internal successors, (2661), 20 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:57,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:57,619 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:57,619 INFO L175 Difference]: Start difference. First operand has 409 places, 283 transitions, 2694 flow. Second operand 20 states and 2661 transitions. [2022-11-18 18:31:57,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 322 transitions, 3608 flow [2022-11-18 18:31:57,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 322 transitions, 3484 flow, removed 33 selfloop flow, removed 8 redundant places. [2022-11-18 18:31:57,709 INFO L231 Difference]: Finished difference. Result has 419 places, 287 transitions, 2788 flow [2022-11-18 18:31:57,709 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2596, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2788, PETRI_PLACES=419, PETRI_TRANSITIONS=287} [2022-11-18 18:31:57,710 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 262 predicate places. [2022-11-18 18:31:57,710 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 287 transitions, 2788 flow [2022-11-18 18:31:57,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:57,710 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:57,710 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:57,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-11-18 18:31:57,710 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:57,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:57,711 INFO L85 PathProgramCache]: Analyzing trace with hash -486521228, now seen corresponding path program 32 times [2022-11-18 18:31:57,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:57,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707399714] [2022-11-18 18:31:57,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:57,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:57,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:57,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:57,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707399714] [2022-11-18 18:31:57,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707399714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:57,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:57,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:57,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120481976] [2022-11-18 18:31:57,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:57,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:57,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:57,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:57,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:57,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:57,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 287 transitions, 2788 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:57,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:57,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:57,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:58,728 INFO L130 PetriNetUnfolder]: 269/1538 cut-off events. [2022-11-18 18:31:58,728 INFO L131 PetriNetUnfolder]: For 12647/12742 co-relation queries the response was YES. [2022-11-18 18:31:58,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6892 conditions, 1538 events. 269/1538 cut-off events. For 12647/12742 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11661 event pairs, 195 based on Foata normal form. 6/1482 useless extension candidates. Maximal degree in co-relation 6731. Up to 647 conditions per place. [2022-11-18 18:31:58,753 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 20 changer transitions 47/312 dead transitions. [2022-11-18 18:31:58,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 312 transitions, 3354 flow [2022-11-18 18:31:58,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:31:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 18:31:58,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2530 transitions. [2022-11-18 18:31:58,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7652752571082879 [2022-11-18 18:31:58,756 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2530 transitions. [2022-11-18 18:31:58,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2530 transitions. [2022-11-18 18:31:58,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:58,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2530 transitions. [2022-11-18 18:31:58,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.1578947368421) internal successors, (2530), 19 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:58,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:58,760 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:58,760 INFO L175 Difference]: Start difference. First operand has 419 places, 287 transitions, 2788 flow. Second operand 19 states and 2530 transitions. [2022-11-18 18:31:58,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 312 transitions, 3354 flow [2022-11-18 18:31:58,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 312 transitions, 3241 flow, removed 38 selfloop flow, removed 7 redundant places. [2022-11-18 18:31:58,858 INFO L231 Difference]: Finished difference. Result has 425 places, 263 transitions, 2306 flow [2022-11-18 18:31:58,858 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2683, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2306, PETRI_PLACES=425, PETRI_TRANSITIONS=263} [2022-11-18 18:31:58,859 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 268 predicate places. [2022-11-18 18:31:58,859 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 263 transitions, 2306 flow [2022-11-18 18:31:58,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:58,859 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:58,859 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:58,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-11-18 18:31:58,859 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:58,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:58,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1997005518, now seen corresponding path program 33 times [2022-11-18 18:31:58,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:58,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907444372] [2022-11-18 18:31:58,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:58,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:59,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:59,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:59,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907444372] [2022-11-18 18:31:59,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907444372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:59,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:59,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:31:59,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254694700] [2022-11-18 18:31:59,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:59,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:31:59,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:59,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:31:59,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:31:59,045 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:31:59,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 263 transitions, 2306 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:59,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:59,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:31:59,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:59,864 INFO L130 PetriNetUnfolder]: 264/1520 cut-off events. [2022-11-18 18:31:59,864 INFO L131 PetriNetUnfolder]: For 11906/12001 co-relation queries the response was YES. [2022-11-18 18:31:59,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6658 conditions, 1520 events. 264/1520 cut-off events. For 11906/12001 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11544 event pairs, 197 based on Foata normal form. 6/1463 useless extension candidates. Maximal degree in co-relation 6496. Up to 644 conditions per place. [2022-11-18 18:31:59,887 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 85 selfloop transitions, 23 changer transitions 41/297 dead transitions. [2022-11-18 18:31:59,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 297 transitions, 3035 flow [2022-11-18 18:31:59,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:31:59,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:31:59,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2788 transitions. [2022-11-18 18:31:59,890 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7629994526546251 [2022-11-18 18:31:59,890 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2788 transitions. [2022-11-18 18:31:59,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2788 transitions. [2022-11-18 18:31:59,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:59,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2788 transitions. [2022-11-18 18:31:59,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.76190476190476) internal successors, (2788), 21 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:59,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:59,895 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:59,895 INFO L175 Difference]: Start difference. First operand has 425 places, 263 transitions, 2306 flow. Second operand 21 states and 2788 transitions. [2022-11-18 18:31:59,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 297 transitions, 3035 flow [2022-11-18 18:31:59,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 297 transitions, 2811 flow, removed 37 selfloop flow, removed 24 redundant places. [2022-11-18 18:31:59,976 INFO L231 Difference]: Finished difference. Result has 401 places, 254 transitions, 2044 flow [2022-11-18 18:31:59,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2149, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2044, PETRI_PLACES=401, PETRI_TRANSITIONS=254} [2022-11-18 18:31:59,977 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 244 predicate places. [2022-11-18 18:31:59,977 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 254 transitions, 2044 flow [2022-11-18 18:31:59,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:59,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:59,977 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:59,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-11-18 18:31:59,978 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:31:59,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:59,978 INFO L85 PathProgramCache]: Analyzing trace with hash -777398948, now seen corresponding path program 34 times [2022-11-18 18:31:59,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:59,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138378455] [2022-11-18 18:31:59,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:59,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:00,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:00,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138378455] [2022-11-18 18:32:00,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138378455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:00,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:00,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:32:00,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494435693] [2022-11-18 18:32:00,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:00,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:32:00,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:00,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:32:00,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:32:00,182 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:32:00,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 254 transitions, 2044 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:00,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:00,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:32:00,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:01,000 INFO L130 PetriNetUnfolder]: 255/1488 cut-off events. [2022-11-18 18:32:01,000 INFO L131 PetriNetUnfolder]: For 10889/10984 co-relation queries the response was YES. [2022-11-18 18:32:01,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6264 conditions, 1488 events. 255/1488 cut-off events. For 10889/10984 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11165 event pairs, 196 based on Foata normal form. 6/1431 useless extension candidates. Maximal degree in co-relation 6110. Up to 638 conditions per place. [2022-11-18 18:32:01,025 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 72 selfloop transitions, 18 changer transitions 42/280 dead transitions. [2022-11-18 18:32:01,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 280 transitions, 2564 flow [2022-11-18 18:32:01,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:32:01,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 18:32:01,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2914 transitions. [2022-11-18 18:32:01,028 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7612330198537095 [2022-11-18 18:32:01,028 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2914 transitions. [2022-11-18 18:32:01,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2914 transitions. [2022-11-18 18:32:01,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:01,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2914 transitions. [2022-11-18 18:32:01,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.45454545454547) internal successors, (2914), 22 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:01,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:01,034 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:01,034 INFO L175 Difference]: Start difference. First operand has 401 places, 254 transitions, 2044 flow. Second operand 22 states and 2914 transitions. [2022-11-18 18:32:01,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 280 transitions, 2564 flow [2022-11-18 18:32:01,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 280 transitions, 2409 flow, removed 25 selfloop flow, removed 24 redundant places. [2022-11-18 18:32:01,103 INFO L231 Difference]: Finished difference. Result has 387 places, 237 transitions, 1707 flow [2022-11-18 18:32:01,103 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1707, PETRI_PLACES=387, PETRI_TRANSITIONS=237} [2022-11-18 18:32:01,103 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 230 predicate places. [2022-11-18 18:32:01,103 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 237 transitions, 1707 flow [2022-11-18 18:32:01,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:01,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:01,104 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:01,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-11-18 18:32:01,104 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:32:01,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:01,104 INFO L85 PathProgramCache]: Analyzing trace with hash -329605182, now seen corresponding path program 35 times [2022-11-18 18:32:01,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:01,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222913422] [2022-11-18 18:32:01,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:01,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:01,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:01,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222913422] [2022-11-18 18:32:01,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222913422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:01,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:01,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:32:01,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199914239] [2022-11-18 18:32:01,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:01,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:32:01,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:01,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:32:01,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:32:01,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-11-18 18:32:01,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 237 transitions, 1707 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:01,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:01,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-11-18 18:32:01,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:02,007 INFO L130 PetriNetUnfolder]: 241/1399 cut-off events. [2022-11-18 18:32:02,007 INFO L131 PetriNetUnfolder]: For 10074/10169 co-relation queries the response was YES. [2022-11-18 18:32:02,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5797 conditions, 1399 events. 241/1399 cut-off events. For 10074/10169 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10339 event pairs, 194 based on Foata normal form. 6/1344 useless extension candidates. Maximal degree in co-relation 5651. Up to 614 conditions per place. [2022-11-18 18:32:02,025 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 60 selfloop transitions, 2 changer transitions 51/257 dead transitions. [2022-11-18 18:32:02,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 257 transitions, 2093 flow [2022-11-18 18:32:02,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:32:02,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 18:32:02,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2645 transitions. [2022-11-18 18:32:02,027 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2022-11-18 18:32:02,027 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2645 transitions. [2022-11-18 18:32:02,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2645 transitions. [2022-11-18 18:32:02,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:02,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2645 transitions. [2022-11-18 18:32:02,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.25) internal successors, (2645), 20 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:02,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:02,032 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:02,032 INFO L175 Difference]: Start difference. First operand has 387 places, 237 transitions, 1707 flow. Second operand 20 states and 2645 transitions. [2022-11-18 18:32:02,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 257 transitions, 2093 flow [2022-11-18 18:32:02,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 257 transitions, 1961 flow, removed 26 selfloop flow, removed 25 redundant places. [2022-11-18 18:32:02,091 INFO L231 Difference]: Finished difference. Result has 362 places, 206 transitions, 1192 flow [2022-11-18 18:32:02,091 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1598, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1192, PETRI_PLACES=362, PETRI_TRANSITIONS=206} [2022-11-18 18:32:02,091 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 205 predicate places. [2022-11-18 18:32:02,092 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 206 transitions, 1192 flow [2022-11-18 18:32:02,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:02,092 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:02,092 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:02,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-11-18 18:32:02,092 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:32:02,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:02,093 INFO L85 PathProgramCache]: Analyzing trace with hash 168112237, now seen corresponding path program 1 times [2022-11-18 18:32:02,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:02,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76699025] [2022-11-18 18:32:02,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:02,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:02,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:02,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:02,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76699025] [2022-11-18 18:32:02,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76699025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:02,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:02,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 18:32:02,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262161837] [2022-11-18 18:32:02,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:02,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:32:02,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:02,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:32:02,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:32:02,626 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-18 18:32:02,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 206 transitions, 1192 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:02,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:02,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-18 18:32:02,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:04,854 INFO L130 PetriNetUnfolder]: 764/3121 cut-off events. [2022-11-18 18:32:04,854 INFO L131 PetriNetUnfolder]: For 18793/18819 co-relation queries the response was YES. [2022-11-18 18:32:04,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11299 conditions, 3121 events. 764/3121 cut-off events. For 18793/18819 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 25909 event pairs, 223 based on Foata normal form. 24/3044 useless extension candidates. Maximal degree in co-relation 11167. Up to 521 conditions per place. [2022-11-18 18:32:04,906 INFO L137 encePairwiseOnDemand]: 147/174 looper letters, 259 selfloop transitions, 37 changer transitions 55/438 dead transitions. [2022-11-18 18:32:04,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 438 transitions, 3701 flow [2022-11-18 18:32:04,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 18:32:04,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-18 18:32:04,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2838 transitions. [2022-11-18 18:32:04,910 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6273209549071618 [2022-11-18 18:32:04,910 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2838 transitions. [2022-11-18 18:32:04,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2838 transitions. [2022-11-18 18:32:04,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:04,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2838 transitions. [2022-11-18 18:32:04,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 109.15384615384616) internal successors, (2838), 26 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:04,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:04,916 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:04,916 INFO L175 Difference]: Start difference. First operand has 362 places, 206 transitions, 1192 flow. Second operand 26 states and 2838 transitions. [2022-11-18 18:32:04,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 438 transitions, 3701 flow [2022-11-18 18:32:04,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 438 transitions, 3581 flow, removed 47 selfloop flow, removed 28 redundant places. [2022-11-18 18:32:04,990 INFO L231 Difference]: Finished difference. Result has 340 places, 216 transitions, 1468 flow [2022-11-18 18:32:04,991 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1468, PETRI_PLACES=340, PETRI_TRANSITIONS=216} [2022-11-18 18:32:04,991 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 183 predicate places. [2022-11-18 18:32:04,991 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 216 transitions, 1468 flow [2022-11-18 18:32:04,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:04,992 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:04,992 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:04,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-11-18 18:32:04,993 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:32:04,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:04,993 INFO L85 PathProgramCache]: Analyzing trace with hash 952373441, now seen corresponding path program 2 times [2022-11-18 18:32:04,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:04,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791007681] [2022-11-18 18:32:04,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:04,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:05,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:05,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791007681] [2022-11-18 18:32:05,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791007681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:05,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:05,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 18:32:05,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077539935] [2022-11-18 18:32:05,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:05,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:32:05,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:05,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:32:05,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:32:05,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-18 18:32:05,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 216 transitions, 1468 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:05,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:05,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-18 18:32:05,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:08,681 INFO L130 PetriNetUnfolder]: 756/2987 cut-off events. [2022-11-18 18:32:08,681 INFO L131 PetriNetUnfolder]: For 24672/24698 co-relation queries the response was YES. [2022-11-18 18:32:08,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12349 conditions, 2987 events. 756/2987 cut-off events. For 24672/24698 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 24414 event pairs, 371 based on Foata normal form. 23/2909 useless extension candidates. Maximal degree in co-relation 12220. Up to 733 conditions per place. [2022-11-18 18:32:08,725 INFO L137 encePairwiseOnDemand]: 149/174 looper letters, 256 selfloop transitions, 23 changer transitions 90/456 dead transitions. [2022-11-18 18:32:08,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 456 transitions, 4109 flow [2022-11-18 18:32:08,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 18:32:08,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 18:32:08,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4029 transitions. [2022-11-18 18:32:08,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6093466424682396 [2022-11-18 18:32:08,729 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4029 transitions. [2022-11-18 18:32:08,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4029 transitions. [2022-11-18 18:32:08,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:08,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4029 transitions. [2022-11-18 18:32:08,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 106.02631578947368) internal successors, (4029), 38 states have internal predecessors, (4029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:08,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 174.0) internal successors, (6786), 39 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:08,737 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 174.0) internal successors, (6786), 39 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:08,737 INFO L175 Difference]: Start difference. First operand has 340 places, 216 transitions, 1468 flow. Second operand 38 states and 4029 transitions. [2022-11-18 18:32:08,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 456 transitions, 4109 flow [2022-11-18 18:32:08,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 456 transitions, 3692 flow, removed 184 selfloop flow, removed 25 redundant places. [2022-11-18 18:32:08,835 INFO L231 Difference]: Finished difference. Result has 360 places, 218 transitions, 1461 flow [2022-11-18 18:32:08,835 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1461, PETRI_PLACES=360, PETRI_TRANSITIONS=218} [2022-11-18 18:32:08,835 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 203 predicate places. [2022-11-18 18:32:08,835 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 218 transitions, 1461 flow [2022-11-18 18:32:08,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:08,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:08,836 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:08,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-11-18 18:32:08,837 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:32:08,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:08,837 INFO L85 PathProgramCache]: Analyzing trace with hash -923289103, now seen corresponding path program 3 times [2022-11-18 18:32:08,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:08,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436564580] [2022-11-18 18:32:08,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:08,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:09,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:09,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:09,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436564580] [2022-11-18 18:32:09,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436564580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:09,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:09,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 18:32:09,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677326698] [2022-11-18 18:32:09,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:09,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:32:09,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:09,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:32:09,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:32:09,377 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-18 18:32:09,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 218 transitions, 1461 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:09,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:09,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-18 18:32:09,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:11,782 INFO L130 PetriNetUnfolder]: 894/3730 cut-off events. [2022-11-18 18:32:11,782 INFO L131 PetriNetUnfolder]: For 30485/30509 co-relation queries the response was YES. [2022-11-18 18:32:11,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15164 conditions, 3730 events. 894/3730 cut-off events. For 30485/30509 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 32478 event pairs, 310 based on Foata normal form. 24/3635 useless extension candidates. Maximal degree in co-relation 15024. Up to 888 conditions per place. [2022-11-18 18:32:11,832 INFO L137 encePairwiseOnDemand]: 144/174 looper letters, 280 selfloop transitions, 91 changer transitions 46/504 dead transitions. [2022-11-18 18:32:11,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 504 transitions, 5205 flow [2022-11-18 18:32:11,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 18:32:11,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-18 18:32:11,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2749 transitions. [2022-11-18 18:32:11,835 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6319540229885058 [2022-11-18 18:32:11,835 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2749 transitions. [2022-11-18 18:32:11,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2749 transitions. [2022-11-18 18:32:11,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:11,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2749 transitions. [2022-11-18 18:32:11,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 109.96) internal successors, (2749), 25 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:11,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:11,841 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:11,841 INFO L175 Difference]: Start difference. First operand has 360 places, 218 transitions, 1461 flow. Second operand 25 states and 2749 transitions. [2022-11-18 18:32:11,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 504 transitions, 5205 flow [2022-11-18 18:32:11,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 504 transitions, 4831 flow, removed 166 selfloop flow, removed 33 redundant places. [2022-11-18 18:32:11,973 INFO L231 Difference]: Finished difference. Result has 341 places, 289 transitions, 2720 flow [2022-11-18 18:32:11,973 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2720, PETRI_PLACES=341, PETRI_TRANSITIONS=289} [2022-11-18 18:32:11,974 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 184 predicate places. [2022-11-18 18:32:11,974 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 289 transitions, 2720 flow [2022-11-18 18:32:11,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:11,974 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:11,974 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:11,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-11-18 18:32:11,974 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:32:11,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:11,975 INFO L85 PathProgramCache]: Analyzing trace with hash -307553725, now seen corresponding path program 4 times [2022-11-18 18:32:11,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:11,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839573600] [2022-11-18 18:32:11,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:11,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:12,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:12,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:12,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839573600] [2022-11-18 18:32:12,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839573600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:12,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:12,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 18:32:12,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45731211] [2022-11-18 18:32:12,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:12,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:32:12,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:12,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:32:12,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:32:12,555 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-18 18:32:12,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 289 transitions, 2720 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:12,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:12,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-18 18:32:12,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:16,194 INFO L130 PetriNetUnfolder]: 962/3777 cut-off events. [2022-11-18 18:32:16,194 INFO L131 PetriNetUnfolder]: For 31556/31582 co-relation queries the response was YES. [2022-11-18 18:32:16,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16471 conditions, 3777 events. 962/3777 cut-off events. For 31556/31582 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 33073 event pairs, 471 based on Foata normal form. 23/3650 useless extension candidates. Maximal degree in co-relation 16340. Up to 1228 conditions per place. [2022-11-18 18:32:16,239 INFO L137 encePairwiseOnDemand]: 149/174 looper letters, 315 selfloop transitions, 61 changer transitions 81/544 dead transitions. [2022-11-18 18:32:16,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 544 transitions, 6134 flow [2022-11-18 18:32:16,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 18:32:16,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 18:32:16,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3941 transitions. [2022-11-18 18:32:16,243 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6121466293880087 [2022-11-18 18:32:16,243 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3941 transitions. [2022-11-18 18:32:16,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3941 transitions. [2022-11-18 18:32:16,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:16,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3941 transitions. [2022-11-18 18:32:16,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 106.51351351351352) internal successors, (3941), 37 states have internal predecessors, (3941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:16,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 174.0) internal successors, (6612), 38 states have internal predecessors, (6612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:16,255 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 174.0) internal successors, (6612), 38 states have internal predecessors, (6612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:16,255 INFO L175 Difference]: Start difference. First operand has 341 places, 289 transitions, 2720 flow. Second operand 37 states and 3941 transitions. [2022-11-18 18:32:16,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 544 transitions, 6134 flow [2022-11-18 18:32:16,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 544 transitions, 5313 flow, removed 405 selfloop flow, removed 10 redundant places. [2022-11-18 18:32:16,422 INFO L231 Difference]: Finished difference. Result has 391 places, 308 transitions, 2848 flow [2022-11-18 18:32:16,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2848, PETRI_PLACES=391, PETRI_TRANSITIONS=308} [2022-11-18 18:32:16,423 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 234 predicate places. [2022-11-18 18:32:16,423 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 308 transitions, 2848 flow [2022-11-18 18:32:16,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:16,423 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:16,423 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:16,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-11-18 18:32:16,424 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:32:16,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:16,424 INFO L85 PathProgramCache]: Analyzing trace with hash -928239825, now seen corresponding path program 1 times [2022-11-18 18:32:16,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:16,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098974896] [2022-11-18 18:32:16,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:16,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:16,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:16,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:16,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098974896] [2022-11-18 18:32:16,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098974896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:16,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:16,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:32:16,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138948590] [2022-11-18 18:32:16,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:16,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:32:16,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:16,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:32:16,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:32:16,560 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-11-18 18:32:16,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 308 transitions, 2848 flow. Second operand has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:16,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:16,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-11-18 18:32:16,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:16,983 INFO L130 PetriNetUnfolder]: 222/1704 cut-off events. [2022-11-18 18:32:16,983 INFO L131 PetriNetUnfolder]: For 12103/12158 co-relation queries the response was YES. [2022-11-18 18:32:17,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6456 conditions, 1704 events. 222/1704 cut-off events. For 12103/12158 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12896 event pairs, 109 based on Foata normal form. 38/1668 useless extension candidates. Maximal degree in co-relation 6301. Up to 166 conditions per place. [2022-11-18 18:32:17,009 INFO L137 encePairwiseOnDemand]: 170/174 looper letters, 47 selfloop transitions, 5 changer transitions 2/289 dead transitions. [2022-11-18 18:32:17,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 289 transitions, 2622 flow [2022-11-18 18:32:17,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:32:17,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:32:17,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2022-11-18 18:32:17,010 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8620689655172413 [2022-11-18 18:32:17,010 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2022-11-18 18:32:17,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2022-11-18 18:32:17,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:17,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2022-11-18 18:32:17,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:17,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:17,013 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:17,013 INFO L175 Difference]: Start difference. First operand has 391 places, 308 transitions, 2848 flow. Second operand 3 states and 450 transitions. [2022-11-18 18:32:17,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 289 transitions, 2622 flow [2022-11-18 18:32:17,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 289 transitions, 2457 flow, removed 54 selfloop flow, removed 37 redundant places. [2022-11-18 18:32:17,088 INFO L231 Difference]: Finished difference. Result has 326 places, 286 transitions, 2339 flow [2022-11-18 18:32:17,089 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2345, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2339, PETRI_PLACES=326, PETRI_TRANSITIONS=286} [2022-11-18 18:32:17,089 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 169 predicate places. [2022-11-18 18:32:17,089 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 286 transitions, 2339 flow [2022-11-18 18:32:17,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:17,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:17,090 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:17,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-11-18 18:32:17,090 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:32:17,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:17,090 INFO L85 PathProgramCache]: Analyzing trace with hash -911789865, now seen corresponding path program 5 times [2022-11-18 18:32:17,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:17,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708863180] [2022-11-18 18:32:17,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:17,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:17,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:17,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708863180] [2022-11-18 18:32:17,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708863180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:17,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:17,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 18:32:17,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591418568] [2022-11-18 18:32:17,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:17,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:32:17,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:17,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:32:17,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:32:17,588 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-18 18:32:17,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 286 transitions, 2339 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:17,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:17,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-18 18:32:17,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:20,624 INFO L130 PetriNetUnfolder]: 900/4043 cut-off events. [2022-11-18 18:32:20,624 INFO L131 PetriNetUnfolder]: For 23120/23152 co-relation queries the response was YES. [2022-11-18 18:32:20,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15513 conditions, 4043 events. 900/4043 cut-off events. For 23120/23152 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 37649 event pairs, 355 based on Foata normal form. 35/3954 useless extension candidates. Maximal degree in co-relation 15393. Up to 605 conditions per place. [2022-11-18 18:32:20,674 INFO L137 encePairwiseOnDemand]: 144/174 looper letters, 255 selfloop transitions, 115 changer transitions 102/559 dead transitions. [2022-11-18 18:32:20,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 559 transitions, 5685 flow [2022-11-18 18:32:20,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 18:32:20,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 18:32:20,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3766 transitions. [2022-11-18 18:32:20,677 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6183908045977011 [2022-11-18 18:32:20,678 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3766 transitions. [2022-11-18 18:32:20,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3766 transitions. [2022-11-18 18:32:20,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:20,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3766 transitions. [2022-11-18 18:32:20,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 107.6) internal successors, (3766), 35 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:20,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:20,684 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 174.0) internal successors, (6264), 36 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:20,684 INFO L175 Difference]: Start difference. First operand has 326 places, 286 transitions, 2339 flow. Second operand 35 states and 3766 transitions. [2022-11-18 18:32:20,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 559 transitions, 5685 flow [2022-11-18 18:32:20,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 559 transitions, 5678 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-18 18:32:20,794 INFO L231 Difference]: Finished difference. Result has 387 places, 319 transitions, 3234 flow [2022-11-18 18:32:20,795 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2332, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3234, PETRI_PLACES=387, PETRI_TRANSITIONS=319} [2022-11-18 18:32:20,795 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 230 predicate places. [2022-11-18 18:32:20,796 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 319 transitions, 3234 flow [2022-11-18 18:32:20,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:20,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:20,796 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:20,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-11-18 18:32:20,797 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:32:20,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:20,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1179169077, now seen corresponding path program 6 times [2022-11-18 18:32:20,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:20,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21043677] [2022-11-18 18:32:20,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:20,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:21,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:21,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:21,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21043677] [2022-11-18 18:32:21,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21043677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:21,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:21,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 18:32:21,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423711591] [2022-11-18 18:32:21,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:21,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:32:21,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:21,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:32:21,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:32:21,273 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-18 18:32:21,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 319 transitions, 3234 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:21,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:21,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-18 18:32:21,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:23,995 INFO L130 PetriNetUnfolder]: 771/3228 cut-off events. [2022-11-18 18:32:23,995 INFO L131 PetriNetUnfolder]: For 24395/24419 co-relation queries the response was YES. [2022-11-18 18:32:24,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13826 conditions, 3228 events. 771/3228 cut-off events. For 24395/24419 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 27482 event pairs, 455 based on Foata normal form. 22/3119 useless extension candidates. Maximal degree in co-relation 13678. Up to 1040 conditions per place. [2022-11-18 18:32:24,039 INFO L137 encePairwiseOnDemand]: 149/174 looper letters, 273 selfloop transitions, 58 changer transitions 79/497 dead transitions. [2022-11-18 18:32:24,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 497 transitions, 5432 flow [2022-11-18 18:32:24,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 18:32:24,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 18:32:24,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3833 transitions. [2022-11-18 18:32:24,042 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6119093231162197 [2022-11-18 18:32:24,043 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3833 transitions. [2022-11-18 18:32:24,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3833 transitions. [2022-11-18 18:32:24,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:24,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3833 transitions. [2022-11-18 18:32:24,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 106.47222222222223) internal successors, (3833), 36 states have internal predecessors, (3833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:24,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:24,052 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 174.0) internal successors, (6438), 37 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:24,052 INFO L175 Difference]: Start difference. First operand has 387 places, 319 transitions, 3234 flow. Second operand 36 states and 3833 transitions. [2022-11-18 18:32:24,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 497 transitions, 5432 flow [2022-11-18 18:32:24,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 497 transitions, 5079 flow, removed 108 selfloop flow, removed 31 redundant places. [2022-11-18 18:32:24,172 INFO L231 Difference]: Finished difference. Result has 395 places, 305 transitions, 2999 flow [2022-11-18 18:32:24,172 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3042, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2999, PETRI_PLACES=395, PETRI_TRANSITIONS=305} [2022-11-18 18:32:24,172 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 238 predicate places. [2022-11-18 18:32:24,172 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 305 transitions, 2999 flow [2022-11-18 18:32:24,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:24,173 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:24,173 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:24,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-11-18 18:32:24,173 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:32:24,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:24,174 INFO L85 PathProgramCache]: Analyzing trace with hash -2104317809, now seen corresponding path program 7 times [2022-11-18 18:32:24,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:24,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590660703] [2022-11-18 18:32:24,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:24,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:24,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:24,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590660703] [2022-11-18 18:32:24,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590660703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:24,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:24,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 18:32:24,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469997373] [2022-11-18 18:32:24,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:24,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:32:24,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:24,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:32:24,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:32:24,636 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-18 18:32:24,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 305 transitions, 2999 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:24,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:24,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-18 18:32:24,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:27,688 INFO L130 PetriNetUnfolder]: 909/4095 cut-off events. [2022-11-18 18:32:27,688 INFO L131 PetriNetUnfolder]: For 30135/30172 co-relation queries the response was YES. [2022-11-18 18:32:27,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17410 conditions, 4095 events. 909/4095 cut-off events. For 30135/30172 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 38238 event pairs, 372 based on Foata normal form. 40/4024 useless extension candidates. Maximal degree in co-relation 17259. Up to 751 conditions per place. [2022-11-18 18:32:27,743 INFO L137 encePairwiseOnDemand]: 144/174 looper letters, 251 selfloop transitions, 129 changer transitions 87/554 dead transitions. [2022-11-18 18:32:27,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 554 transitions, 6543 flow [2022-11-18 18:32:27,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 18:32:27,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 18:32:27,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3558 transitions. [2022-11-18 18:32:27,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.619644723092999 [2022-11-18 18:32:27,747 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3558 transitions. [2022-11-18 18:32:27,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3558 transitions. [2022-11-18 18:32:27,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:27,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3558 transitions. [2022-11-18 18:32:27,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 107.81818181818181) internal successors, (3558), 33 states have internal predecessors, (3558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:27,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:27,753 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 174.0) internal successors, (5916), 34 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:27,753 INFO L175 Difference]: Start difference. First operand has 395 places, 305 transitions, 2999 flow. Second operand 33 states and 3558 transitions. [2022-11-18 18:32:27,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 554 transitions, 6543 flow [2022-11-18 18:32:27,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 554 transitions, 6087 flow, removed 83 selfloop flow, removed 35 redundant places. [2022-11-18 18:32:27,902 INFO L231 Difference]: Finished difference. Result has 388 places, 333 transitions, 3705 flow [2022-11-18 18:32:27,903 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2789, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3705, PETRI_PLACES=388, PETRI_TRANSITIONS=333} [2022-11-18 18:32:27,903 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 231 predicate places. [2022-11-18 18:32:27,903 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 333 transitions, 3705 flow [2022-11-18 18:32:27,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:27,904 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:27,904 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:27,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-11-18 18:32:27,905 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:32:27,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:27,905 INFO L85 PathProgramCache]: Analyzing trace with hash -921541373, now seen corresponding path program 8 times [2022-11-18 18:32:27,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:27,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598333174] [2022-11-18 18:32:27,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:27,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:28,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:28,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:28,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598333174] [2022-11-18 18:32:28,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598333174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:28,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:28,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 18:32:28,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654829357] [2022-11-18 18:32:28,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:28,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:32:28,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:28,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:32:28,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:32:28,410 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-18 18:32:28,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 333 transitions, 3705 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:28,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:28,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-18 18:32:28,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:31,692 INFO L130 PetriNetUnfolder]: 806/3651 cut-off events. [2022-11-18 18:32:31,692 INFO L131 PetriNetUnfolder]: For 27463/27491 co-relation queries the response was YES. [2022-11-18 18:32:31,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15502 conditions, 3651 events. 806/3651 cut-off events. For 27463/27491 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 32876 event pairs, 313 based on Foata normal form. 31/3575 useless extension candidates. Maximal degree in co-relation 15357. Up to 499 conditions per place. [2022-11-18 18:32:31,744 INFO L137 encePairwiseOnDemand]: 144/174 looper letters, 247 selfloop transitions, 97 changer transitions 98/529 dead transitions. [2022-11-18 18:32:31,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 529 transitions, 6178 flow [2022-11-18 18:32:31,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 18:32:31,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 18:32:31,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3658 transitions. [2022-11-18 18:32:31,750 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6183231913455037 [2022-11-18 18:32:31,750 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3658 transitions. [2022-11-18 18:32:31,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3658 transitions. [2022-11-18 18:32:31,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:31,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3658 transitions. [2022-11-18 18:32:31,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 107.58823529411765) internal successors, (3658), 34 states have internal predecessors, (3658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:31,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:31,762 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:31,762 INFO L175 Difference]: Start difference. First operand has 388 places, 333 transitions, 3705 flow. Second operand 34 states and 3658 transitions. [2022-11-18 18:32:31,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 529 transitions, 6178 flow [2022-11-18 18:32:31,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 529 transitions, 5840 flow, removed 88 selfloop flow, removed 29 redundant places. [2022-11-18 18:32:31,913 INFO L231 Difference]: Finished difference. Result has 395 places, 299 transitions, 3191 flow [2022-11-18 18:32:31,914 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3499, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3191, PETRI_PLACES=395, PETRI_TRANSITIONS=299} [2022-11-18 18:32:31,914 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 238 predicate places. [2022-11-18 18:32:31,914 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 299 transitions, 3191 flow [2022-11-18 18:32:31,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:31,915 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:31,915 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:31,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-11-18 18:32:31,915 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:32:31,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:31,916 INFO L85 PathProgramCache]: Analyzing trace with hash -69379423, now seen corresponding path program 9 times [2022-11-18 18:32:31,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:31,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761497093] [2022-11-18 18:32:31,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:31,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:32,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:32,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:32,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761497093] [2022-11-18 18:32:32,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761497093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:32,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:32,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 18:32:32,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508898217] [2022-11-18 18:32:32,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:32,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:32:32,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:32,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:32:32,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:32:32,501 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-11-18 18:32:32,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 299 transitions, 3191 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:32,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:32,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-11-18 18:32:32,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:35,359 INFO L130 PetriNetUnfolder]: 836/3751 cut-off events. [2022-11-18 18:32:35,359 INFO L131 PetriNetUnfolder]: For 32272/32296 co-relation queries the response was YES. [2022-11-18 18:32:35,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16605 conditions, 3751 events. 836/3751 cut-off events. For 32272/32296 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 33876 event pairs, 319 based on Foata normal form. 24/3675 useless extension candidates. Maximal degree in co-relation 16457. Up to 707 conditions per place. [2022-11-18 18:32:35,424 INFO L137 encePairwiseOnDemand]: 144/174 looper letters, 234 selfloop transitions, 121 changer transitions 70/512 dead transitions. [2022-11-18 18:32:35,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 512 transitions, 6614 flow [2022-11-18 18:32:35,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 18:32:35,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 18:32:35,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3337 transitions. [2022-11-18 18:32:35,428 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6186503522432332 [2022-11-18 18:32:35,428 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3337 transitions. [2022-11-18 18:32:35,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3337 transitions. [2022-11-18 18:32:35,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:35,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3337 transitions. [2022-11-18 18:32:35,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 107.64516129032258) internal successors, (3337), 31 states have internal predecessors, (3337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:35,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:35,434 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:35,434 INFO L175 Difference]: Start difference. First operand has 395 places, 299 transitions, 3191 flow. Second operand 31 states and 3337 transitions. [2022-11-18 18:32:35,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 512 transitions, 6614 flow [2022-11-18 18:32:35,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 512 transitions, 5790 flow, removed 80 selfloop flow, removed 37 redundant places. [2022-11-18 18:32:35,586 INFO L231 Difference]: Finished difference. Result has 383 places, 324 transitions, 3590 flow [2022-11-18 18:32:35,586 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2747, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3590, PETRI_PLACES=383, PETRI_TRANSITIONS=324} [2022-11-18 18:32:35,586 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 226 predicate places. [2022-11-18 18:32:35,587 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 324 transitions, 3590 flow [2022-11-18 18:32:35,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:35,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:35,587 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:35,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-11-18 18:32:35,587 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:32:35,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:35,588 INFO L85 PathProgramCache]: Analyzing trace with hash -2018274431, now seen corresponding path program 10 times [2022-11-18 18:32:35,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:35,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138382216] [2022-11-18 18:32:35,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:35,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:35,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:35,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:35,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138382216] [2022-11-18 18:32:35,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138382216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:35,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:35,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:32:35,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223412023] [2022-11-18 18:32:35,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:35,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:32:35,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:35,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:32:35,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:32:35,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-11-18 18:32:35,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 324 transitions, 3590 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:35,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:35,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-11-18 18:32:35,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:35,952 INFO L130 PetriNetUnfolder]: 58/586 cut-off events. [2022-11-18 18:32:35,952 INFO L131 PetriNetUnfolder]: For 3402/3409 co-relation queries the response was YES. [2022-11-18 18:32:35,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2084 conditions, 586 events. 58/586 cut-off events. For 3402/3409 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2934 event pairs, 36 based on Foata normal form. 14/571 useless extension candidates. Maximal degree in co-relation 1944. Up to 76 conditions per place. [2022-11-18 18:32:35,958 INFO L137 encePairwiseOnDemand]: 164/174 looper letters, 28 selfloop transitions, 0 changer transitions 40/187 dead transitions. [2022-11-18 18:32:35,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 187 transitions, 1188 flow [2022-11-18 18:32:35,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:32:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:32:35,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 737 transitions. [2022-11-18 18:32:35,959 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8471264367816091 [2022-11-18 18:32:35,959 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 737 transitions. [2022-11-18 18:32:35,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 737 transitions. [2022-11-18 18:32:35,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:35,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 737 transitions. [2022-11-18 18:32:35,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:35,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:35,960 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:35,961 INFO L175 Difference]: Start difference. First operand has 383 places, 324 transitions, 3590 flow. Second operand 5 states and 737 transitions. [2022-11-18 18:32:35,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 187 transitions, 1188 flow [2022-11-18 18:32:35,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 187 transitions, 962 flow, removed 86 selfloop flow, removed 46 redundant places. [2022-11-18 18:32:35,977 INFO L231 Difference]: Finished difference. Result has 282 places, 147 transitions, 522 flow [2022-11-18 18:32:35,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=847, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=522, PETRI_PLACES=282, PETRI_TRANSITIONS=147} [2022-11-18 18:32:35,978 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 125 predicate places. [2022-11-18 18:32:35,978 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 147 transitions, 522 flow [2022-11-18 18:32:35,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:35,978 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:35,978 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:35,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-11-18 18:32:35,978 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:32:35,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:35,979 INFO L85 PathProgramCache]: Analyzing trace with hash 961977499, now seen corresponding path program 1 times [2022-11-18 18:32:35,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:35,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854088797] [2022-11-18 18:32:35,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:35,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:37,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:37,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:37,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854088797] [2022-11-18 18:32:37,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854088797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:37,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:37,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-18 18:32:37,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269468020] [2022-11-18 18:32:37,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:37,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:32:37,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:37,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:32:37,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:32:37,397 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-11-18 18:32:37,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 147 transitions, 522 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:37,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:37,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-11-18 18:32:37,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:33:29,488 INFO L130 PetriNetUnfolder]: 586/1887 cut-off events. [2022-11-18 18:33:29,488 INFO L131 PetriNetUnfolder]: For 5034/5034 co-relation queries the response was YES. [2022-11-18 18:33:29,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5326 conditions, 1887 events. 586/1887 cut-off events. For 5034/5034 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 11422 event pairs, 44 based on Foata normal form. 1/1858 useless extension candidates. Maximal degree in co-relation 5226. Up to 135 conditions per place. [2022-11-18 18:33:29,501 INFO L137 encePairwiseOnDemand]: 136/174 looper letters, 342 selfloop transitions, 20 changer transitions 183/616 dead transitions. [2022-11-18 18:33:29,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 616 transitions, 4203 flow [2022-11-18 18:33:29,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-11-18 18:33:29,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-11-18 18:33:29,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 7849 transitions. [2022-11-18 18:33:29,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5126044932079414 [2022-11-18 18:33:29,507 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 7849 transitions. [2022-11-18 18:33:29,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 7849 transitions. [2022-11-18 18:33:29,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:33:29,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 7849 transitions. [2022-11-18 18:33:29,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 89.19318181818181) internal successors, (7849), 88 states have internal predecessors, (7849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:29,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:29,522 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:29,522 INFO L175 Difference]: Start difference. First operand has 282 places, 147 transitions, 522 flow. Second operand 88 states and 7849 transitions. [2022-11-18 18:33:29,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 616 transitions, 4203 flow [2022-11-18 18:33:29,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 616 transitions, 3680 flow, removed 234 selfloop flow, removed 23 redundant places. [2022-11-18 18:33:29,536 INFO L231 Difference]: Finished difference. Result has 385 places, 147 transitions, 633 flow [2022-11-18 18:33:29,536 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=633, PETRI_PLACES=385, PETRI_TRANSITIONS=147} [2022-11-18 18:33:29,537 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 228 predicate places. [2022-11-18 18:33:29,537 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 147 transitions, 633 flow [2022-11-18 18:33:29,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:29,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:33:29,537 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:29,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-11-18 18:33:29,537 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:33:29,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:29,538 INFO L85 PathProgramCache]: Analyzing trace with hash 571141345, now seen corresponding path program 2 times [2022-11-18 18:33:29,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:29,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106523291] [2022-11-18 18:33:29,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:29,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:33:30,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:30,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106523291] [2022-11-18 18:33:30,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106523291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:30,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:33:30,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-18 18:33:30,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219824662] [2022-11-18 18:33:30,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:30,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:33:30,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:30,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:33:30,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:33:30,879 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-11-18 18:33:30,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 147 transitions, 633 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:30,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:33:30,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-11-18 18:33:30,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:33:50,495 INFO L130 PetriNetUnfolder]: 860/2727 cut-off events. [2022-11-18 18:33:50,495 INFO L131 PetriNetUnfolder]: For 16982/16982 co-relation queries the response was YES. [2022-11-18 18:33:50,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10545 conditions, 2727 events. 860/2727 cut-off events. For 16982/16982 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 18828 event pairs, 12 based on Foata normal form. 1/2671 useless extension candidates. Maximal degree in co-relation 10393. Up to 847 conditions per place. [2022-11-18 18:33:50,530 INFO L137 encePairwiseOnDemand]: 136/174 looper letters, 351 selfloop transitions, 21 changer transitions 146/589 dead transitions. [2022-11-18 18:33:50,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 589 transitions, 4995 flow [2022-11-18 18:33:50,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-18 18:33:50,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-11-18 18:33:50,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7490 transitions. [2022-11-18 18:33:50,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5124521072796935 [2022-11-18 18:33:50,538 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7490 transitions. [2022-11-18 18:33:50,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7490 transitions. [2022-11-18 18:33:50,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:33:50,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7490 transitions. [2022-11-18 18:33:50,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.16666666666667) internal successors, (7490), 84 states have internal predecessors, (7490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:50,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:50,561 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:50,561 INFO L175 Difference]: Start difference. First operand has 385 places, 147 transitions, 633 flow. Second operand 84 states and 7490 transitions. [2022-11-18 18:33:50,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 589 transitions, 4995 flow [2022-11-18 18:33:50,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 589 transitions, 3552 flow, removed 499 selfloop flow, removed 82 redundant places. [2022-11-18 18:33:50,600 INFO L231 Difference]: Finished difference. Result has 395 places, 160 transitions, 851 flow [2022-11-18 18:33:50,601 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=851, PETRI_PLACES=395, PETRI_TRANSITIONS=160} [2022-11-18 18:33:50,601 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 238 predicate places. [2022-11-18 18:33:50,601 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 160 transitions, 851 flow [2022-11-18 18:33:50,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:50,601 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:33:50,602 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:50,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-11-18 18:33:50,602 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:33:50,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:50,602 INFO L85 PathProgramCache]: Analyzing trace with hash 267424205, now seen corresponding path program 3 times [2022-11-18 18:33:50,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:50,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052206971] [2022-11-18 18:33:50,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:50,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:33:51,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:51,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052206971] [2022-11-18 18:33:51,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052206971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:51,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:33:51,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-18 18:33:51,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589484988] [2022-11-18 18:33:51,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:51,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:33:51,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:51,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:33:51,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:33:51,944 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-11-18 18:33:51,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 160 transitions, 851 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:51,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:33:51,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-11-18 18:33:51,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:10,851 INFO L130 PetriNetUnfolder]: 1189/3787 cut-off events. [2022-11-18 18:34:10,851 INFO L131 PetriNetUnfolder]: For 51246/51246 co-relation queries the response was YES. [2022-11-18 18:34:10,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17629 conditions, 3787 events. 1189/3787 cut-off events. For 51246/51246 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 29098 event pairs, 88 based on Foata normal form. 1/3689 useless extension candidates. Maximal degree in co-relation 17464. Up to 895 conditions per place. [2022-11-18 18:34:10,904 INFO L137 encePairwiseOnDemand]: 136/174 looper letters, 361 selfloop transitions, 33 changer transitions 160/625 dead transitions. [2022-11-18 18:34:10,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 625 transitions, 7895 flow [2022-11-18 18:34:10,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-11-18 18:34:10,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-11-18 18:34:10,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 7845 transitions. [2022-11-18 18:34:10,911 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5123432601880877 [2022-11-18 18:34:10,911 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 7845 transitions. [2022-11-18 18:34:10,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 7845 transitions. [2022-11-18 18:34:10,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:10,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 7845 transitions. [2022-11-18 18:34:10,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 89.14772727272727) internal successors, (7845), 88 states have internal predecessors, (7845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:10,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:10,929 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:10,929 INFO L175 Difference]: Start difference. First operand has 395 places, 160 transitions, 851 flow. Second operand 88 states and 7845 transitions. [2022-11-18 18:34:10,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 625 transitions, 7895 flow [2022-11-18 18:34:11,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 625 transitions, 6657 flow, removed 605 selfloop flow, removed 34 redundant places. [2022-11-18 18:34:11,028 INFO L231 Difference]: Finished difference. Result has 467 places, 173 transitions, 1317 flow [2022-11-18 18:34:11,028 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=1317, PETRI_PLACES=467, PETRI_TRANSITIONS=173} [2022-11-18 18:34:11,028 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 310 predicate places. [2022-11-18 18:34:11,029 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 173 transitions, 1317 flow [2022-11-18 18:34:11,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:11,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:11,029 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:11,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-11-18 18:34:11,029 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:34:11,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:11,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1171752973, now seen corresponding path program 4 times [2022-11-18 18:34:11,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:11,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095740022] [2022-11-18 18:34:11,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:11,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:12,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:12,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095740022] [2022-11-18 18:34:12,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095740022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:12,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:12,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-18 18:34:12,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458884606] [2022-11-18 18:34:12,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:12,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:34:12,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:12,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:34:12,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:34:12,274 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-11-18 18:34:12,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 173 transitions, 1317 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:12,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:12,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-11-18 18:34:12,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:30,436 INFO L130 PetriNetUnfolder]: 1283/4111 cut-off events. [2022-11-18 18:34:30,436 INFO L131 PetriNetUnfolder]: For 91949/91949 co-relation queries the response was YES. [2022-11-18 18:34:30,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23675 conditions, 4111 events. 1283/4111 cut-off events. For 91949/91949 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 32458 event pairs, 46 based on Foata normal form. 1/4072 useless extension candidates. Maximal degree in co-relation 23456. Up to 380 conditions per place. [2022-11-18 18:34:30,519 INFO L137 encePairwiseOnDemand]: 136/174 looper letters, 552 selfloop transitions, 25 changer transitions 163/811 dead transitions. [2022-11-18 18:34:30,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 811 transitions, 11615 flow [2022-11-18 18:34:30,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-18 18:34:30,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-11-18 18:34:30,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7508 transitions. [2022-11-18 18:34:30,527 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5136836343732896 [2022-11-18 18:34:30,527 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7508 transitions. [2022-11-18 18:34:30,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7508 transitions. [2022-11-18 18:34:30,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:30,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7508 transitions. [2022-11-18 18:34:30,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.38095238095238) internal successors, (7508), 84 states have internal predecessors, (7508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:30,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:30,543 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:30,544 INFO L175 Difference]: Start difference. First operand has 467 places, 173 transitions, 1317 flow. Second operand 84 states and 7508 transitions. [2022-11-18 18:34:30,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 811 transitions, 11615 flow [2022-11-18 18:34:30,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 811 transitions, 9720 flow, removed 942 selfloop flow, removed 73 redundant places. [2022-11-18 18:34:30,944 INFO L231 Difference]: Finished difference. Result has 475 places, 179 transitions, 1350 flow [2022-11-18 18:34:30,945 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1350, PETRI_PLACES=475, PETRI_TRANSITIONS=179} [2022-11-18 18:34:30,945 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 318 predicate places. [2022-11-18 18:34:30,945 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 179 transitions, 1350 flow [2022-11-18 18:34:30,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:30,946 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:30,946 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:30,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-11-18 18:34:30,946 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:34:30,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:30,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1409958227, now seen corresponding path program 5 times [2022-11-18 18:34:30,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:30,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061390959] [2022-11-18 18:34:30,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:30,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:32,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:32,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061390959] [2022-11-18 18:34:32,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061390959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:32,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:32,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-18 18:34:32,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402216708] [2022-11-18 18:34:32,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:32,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:34:32,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:32,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:34:32,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:34:32,233 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-11-18 18:34:32,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 179 transitions, 1350 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:32,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:32,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-11-18 18:34:32,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:45,444 INFO L130 PetriNetUnfolder]: 1356/4395 cut-off events. [2022-11-18 18:34:45,445 INFO L131 PetriNetUnfolder]: For 61014/61022 co-relation queries the response was YES. [2022-11-18 18:34:45,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23098 conditions, 4395 events. 1356/4395 cut-off events. For 61014/61022 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 35434 event pairs, 141 based on Foata normal form. 1/4283 useless extension candidates. Maximal degree in co-relation 22881. Up to 895 conditions per place. [2022-11-18 18:34:45,525 INFO L137 encePairwiseOnDemand]: 136/174 looper letters, 413 selfloop transitions, 38 changer transitions 151/673 dead transitions. [2022-11-18 18:34:45,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 673 transitions, 8753 flow [2022-11-18 18:34:45,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-18 18:34:45,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-11-18 18:34:45,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7520 transitions. [2022-11-18 18:34:45,533 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5145046524356869 [2022-11-18 18:34:45,533 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7520 transitions. [2022-11-18 18:34:45,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7520 transitions. [2022-11-18 18:34:45,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:45,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7520 transitions. [2022-11-18 18:34:45,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.52380952380952) internal successors, (7520), 84 states have internal predecessors, (7520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:45,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:45,551 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:45,551 INFO L175 Difference]: Start difference. First operand has 475 places, 179 transitions, 1350 flow. Second operand 84 states and 7520 transitions. [2022-11-18 18:34:45,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 673 transitions, 8753 flow [2022-11-18 18:34:45,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 673 transitions, 8231 flow, removed 170 selfloop flow, removed 69 redundant places. [2022-11-18 18:34:45,720 INFO L231 Difference]: Finished difference. Result has 492 places, 185 transitions, 1550 flow [2022-11-18 18:34:45,720 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1550, PETRI_PLACES=492, PETRI_TRANSITIONS=185} [2022-11-18 18:34:45,721 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 335 predicate places. [2022-11-18 18:34:45,721 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 185 transitions, 1550 flow [2022-11-18 18:34:45,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:45,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:45,721 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:45,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-11-18 18:34:45,721 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:34:45,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:45,722 INFO L85 PathProgramCache]: Analyzing trace with hash 55354319, now seen corresponding path program 6 times [2022-11-18 18:34:45,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:45,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101105641] [2022-11-18 18:34:45,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:45,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:47,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:47,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:47,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101105641] [2022-11-18 18:34:47,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101105641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:47,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:47,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-18 18:34:47,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898313062] [2022-11-18 18:34:47,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:47,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:34:47,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:47,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:34:47,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:34:47,164 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-11-18 18:34:47,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 185 transitions, 1550 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:47,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:47,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-11-18 18:34:47,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:02,954 INFO L130 PetriNetUnfolder]: 1479/4827 cut-off events. [2022-11-18 18:35:02,954 INFO L131 PetriNetUnfolder]: For 95730/95730 co-relation queries the response was YES. [2022-11-18 18:35:03,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28512 conditions, 4827 events. 1479/4827 cut-off events. For 95730/95730 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 39682 event pairs, 126 based on Foata normal form. 1/4771 useless extension candidates. Maximal degree in co-relation 28288. Up to 507 conditions per place. [2022-11-18 18:35:03,091 INFO L137 encePairwiseOnDemand]: 136/174 looper letters, 557 selfloop transitions, 29 changer transitions 168/825 dead transitions. [2022-11-18 18:35:03,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 825 transitions, 12210 flow [2022-11-18 18:35:03,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-18 18:35:03,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-11-18 18:35:03,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7507 transitions. [2022-11-18 18:35:03,097 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5136152162014231 [2022-11-18 18:35:03,097 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7507 transitions. [2022-11-18 18:35:03,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7507 transitions. [2022-11-18 18:35:03,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:03,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7507 transitions. [2022-11-18 18:35:03,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.36904761904762) internal successors, (7507), 84 states have internal predecessors, (7507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:03,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:03,112 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:03,112 INFO L175 Difference]: Start difference. First operand has 492 places, 185 transitions, 1550 flow. Second operand 84 states and 7507 transitions. [2022-11-18 18:35:03,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 825 transitions, 12210 flow [2022-11-18 18:35:03,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 825 transitions, 11210 flow, removed 381 selfloop flow, removed 69 redundant places. [2022-11-18 18:35:03,332 INFO L231 Difference]: Finished difference. Result has 511 places, 192 transitions, 1736 flow [2022-11-18 18:35:03,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1736, PETRI_PLACES=511, PETRI_TRANSITIONS=192} [2022-11-18 18:35:03,332 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 354 predicate places. [2022-11-18 18:35:03,332 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 192 transitions, 1736 flow [2022-11-18 18:35:03,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:03,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:03,333 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:03,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-11-18 18:35:03,333 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:35:03,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:03,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1191830613, now seen corresponding path program 7 times [2022-11-18 18:35:03,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:03,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128450665] [2022-11-18 18:35:03,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:03,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:04,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:04,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128450665] [2022-11-18 18:35:04,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128450665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:04,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:04,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-18 18:35:04,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377243241] [2022-11-18 18:35:04,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:04,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:35:04,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:04,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:35:04,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:35:04,652 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-11-18 18:35:04,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 192 transitions, 1736 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:04,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:04,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-11-18 18:35:04,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:24,835 INFO L130 PetriNetUnfolder]: 1533/4916 cut-off events. [2022-11-18 18:35:24,835 INFO L131 PetriNetUnfolder]: For 95397/95409 co-relation queries the response was YES. [2022-11-18 18:35:24,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29650 conditions, 4916 events. 1533/4916 cut-off events. For 95397/95409 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 40435 event pairs, 239 based on Foata normal form. 1/4815 useless extension candidates. Maximal degree in co-relation 29417. Up to 1731 conditions per place. [2022-11-18 18:35:24,934 INFO L137 encePairwiseOnDemand]: 136/174 looper letters, 476 selfloop transitions, 29 changer transitions 142/718 dead transitions. [2022-11-18 18:35:24,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 718 transitions, 10648 flow [2022-11-18 18:35:24,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-11-18 18:35:24,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-11-18 18:35:24,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7167 transitions. [2022-11-18 18:35:24,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5148706896551725 [2022-11-18 18:35:24,941 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7167 transitions. [2022-11-18 18:35:24,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7167 transitions. [2022-11-18 18:35:24,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:24,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7167 transitions. [2022-11-18 18:35:24,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.5875) internal successors, (7167), 80 states have internal predecessors, (7167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:24,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:24,956 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:24,956 INFO L175 Difference]: Start difference. First operand has 511 places, 192 transitions, 1736 flow. Second operand 80 states and 7167 transitions. [2022-11-18 18:35:24,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 718 transitions, 10648 flow [2022-11-18 18:35:25,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 718 transitions, 9340 flow, removed 577 selfloop flow, removed 65 redundant places. [2022-11-18 18:35:25,336 INFO L231 Difference]: Finished difference. Result has 523 places, 198 transitions, 1849 flow [2022-11-18 18:35:25,336 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1545, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=1849, PETRI_PLACES=523, PETRI_TRANSITIONS=198} [2022-11-18 18:35:25,336 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 366 predicate places. [2022-11-18 18:35:25,337 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 198 transitions, 1849 flow [2022-11-18 18:35:25,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:25,337 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:25,337 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:25,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-11-18 18:35:25,337 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:35:25,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:25,338 INFO L85 PathProgramCache]: Analyzing trace with hash -2007885955, now seen corresponding path program 8 times [2022-11-18 18:35:25,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:25,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542474036] [2022-11-18 18:35:25,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:25,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:26,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:26,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542474036] [2022-11-18 18:35:26,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542474036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:26,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:26,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-18 18:35:26,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702792043] [2022-11-18 18:35:26,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:26,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:35:26,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:26,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:35:26,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:35:26,474 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 174 [2022-11-18 18:35:26,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 198 transitions, 1849 flow. Second operand has 28 states, 28 states have (on average 97.14285714285714) internal successors, (2720), 28 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:26,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:26,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 174 [2022-11-18 18:35:26,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:35,290 INFO L130 PetriNetUnfolder]: 1567/5363 cut-off events. [2022-11-18 18:35:35,290 INFO L131 PetriNetUnfolder]: For 128123/128124 co-relation queries the response was YES. [2022-11-18 18:35:35,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34000 conditions, 5363 events. 1567/5363 cut-off events. For 128123/128124 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 46021 event pairs, 195 based on Foata normal form. 3/5197 useless extension candidates. Maximal degree in co-relation 33761. Up to 653 conditions per place. [2022-11-18 18:35:35,407 INFO L137 encePairwiseOnDemand]: 139/174 looper letters, 359 selfloop transitions, 89 changer transitions 105/638 dead transitions. [2022-11-18 18:35:35,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 638 transitions, 11684 flow [2022-11-18 18:35:35,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 18:35:35,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-18 18:35:35,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 4890 transitions. [2022-11-18 18:35:35,413 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5854885057471264 [2022-11-18 18:35:35,413 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 4890 transitions. [2022-11-18 18:35:35,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 4890 transitions. [2022-11-18 18:35:35,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:35,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 4890 transitions. [2022-11-18 18:35:35,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 101.875) internal successors, (4890), 48 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:35,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 174.0) internal successors, (8526), 49 states have internal predecessors, (8526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:35,428 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 174.0) internal successors, (8526), 49 states have internal predecessors, (8526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:35,428 INFO L175 Difference]: Start difference. First operand has 523 places, 198 transitions, 1849 flow. Second operand 48 states and 4890 transitions. [2022-11-18 18:35:35,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 638 transitions, 11684 flow [2022-11-18 18:35:35,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 638 transitions, 10456 flow, removed 591 selfloop flow, removed 65 redundant places. [2022-11-18 18:35:35,920 INFO L231 Difference]: Finished difference. Result has 482 places, 248 transitions, 3430 flow [2022-11-18 18:35:35,921 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=3430, PETRI_PLACES=482, PETRI_TRANSITIONS=248} [2022-11-18 18:35:35,921 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 325 predicate places. [2022-11-18 18:35:35,921 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 248 transitions, 3430 flow [2022-11-18 18:35:35,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 97.14285714285714) internal successors, (2720), 28 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:35,922 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:35,922 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:35,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-11-18 18:35:35,922 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:35:35,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:35,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1180612387, now seen corresponding path program 9 times [2022-11-18 18:35:35,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:35,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397236861] [2022-11-18 18:35:35,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:35,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:37,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:37,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:37,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397236861] [2022-11-18 18:35:37,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397236861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:37,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:37,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-18 18:35:37,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957234705] [2022-11-18 18:35:37,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:37,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:35:37,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:37,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:35:37,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:35:37,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-11-18 18:35:37,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 248 transitions, 3430 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:37,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:37,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-11-18 18:35:37,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:55,389 INFO L130 PetriNetUnfolder]: 1803/5758 cut-off events. [2022-11-18 18:35:55,389 INFO L131 PetriNetUnfolder]: For 135420/135424 co-relation queries the response was YES. [2022-11-18 18:35:55,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37497 conditions, 5758 events. 1803/5758 cut-off events. For 135420/135424 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 49045 event pairs, 255 based on Foata normal form. 1/5675 useless extension candidates. Maximal degree in co-relation 37277. Up to 906 conditions per place. [2022-11-18 18:35:55,505 INFO L137 encePairwiseOnDemand]: 136/174 looper letters, 588 selfloop transitions, 39 changer transitions 170/868 dead transitions. [2022-11-18 18:35:55,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 868 transitions, 15384 flow [2022-11-18 18:35:55,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-18 18:35:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-11-18 18:35:55,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7505 transitions. [2022-11-18 18:35:55,512 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5134783798576902 [2022-11-18 18:35:55,512 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7505 transitions. [2022-11-18 18:35:55,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7505 transitions. [2022-11-18 18:35:55,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:55,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7505 transitions. [2022-11-18 18:35:55,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.3452380952381) internal successors, (7505), 84 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:55,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:55,530 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:55,530 INFO L175 Difference]: Start difference. First operand has 482 places, 248 transitions, 3430 flow. Second operand 84 states and 7505 transitions. [2022-11-18 18:35:55,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 868 transitions, 15384 flow [2022-11-18 18:35:56,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 868 transitions, 13071 flow, removed 822 selfloop flow, removed 32 redundant places. [2022-11-18 18:35:56,138 INFO L231 Difference]: Finished difference. Result has 579 places, 256 transitions, 2685 flow [2022-11-18 18:35:56,138 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2213, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2685, PETRI_PLACES=579, PETRI_TRANSITIONS=256} [2022-11-18 18:35:56,138 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 422 predicate places. [2022-11-18 18:35:56,138 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 256 transitions, 2685 flow [2022-11-18 18:35:56,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:56,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:56,139 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:56,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-11-18 18:35:56,139 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:35:56,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:56,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1519710325, now seen corresponding path program 10 times [2022-11-18 18:35:56,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:56,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457885104] [2022-11-18 18:35:56,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:56,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:57,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:57,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:57,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457885104] [2022-11-18 18:35:57,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457885104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:57,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:57,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-18 18:35:57,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636614245] [2022-11-18 18:35:57,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:57,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:35:57,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:57,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:35:57,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:35:57,384 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-11-18 18:35:57,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 256 transitions, 2685 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:57,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:57,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-11-18 18:35:57,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:36:19,887 INFO L130 PetriNetUnfolder]: 2143/6945 cut-off events. [2022-11-18 18:36:19,887 INFO L131 PetriNetUnfolder]: For 203583/203583 co-relation queries the response was YES. [2022-11-18 18:36:20,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47473 conditions, 6945 events. 2143/6945 cut-off events. For 203583/203583 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 62668 event pairs, 341 based on Foata normal form. 1/6786 useless extension candidates. Maximal degree in co-relation 47206. Up to 1946 conditions per place. [2022-11-18 18:36:20,074 INFO L137 encePairwiseOnDemand]: 136/174 looper letters, 510 selfloop transitions, 33 changer transitions 135/749 dead transitions. [2022-11-18 18:36:20,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 749 transitions, 13023 flow [2022-11-18 18:36:20,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-11-18 18:36:20,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2022-11-18 18:36:20,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 6835 transitions. [2022-11-18 18:36:20,080 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5168632788868723 [2022-11-18 18:36:20,080 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 6835 transitions. [2022-11-18 18:36:20,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 6835 transitions. [2022-11-18 18:36:20,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:36:20,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 6835 transitions. [2022-11-18 18:36:20,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 89.9342105263158) internal successors, (6835), 76 states have internal predecessors, (6835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:20,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 174.0) internal successors, (13398), 77 states have internal predecessors, (13398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:20,094 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 174.0) internal successors, (13398), 77 states have internal predecessors, (13398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:20,095 INFO L175 Difference]: Start difference. First operand has 579 places, 256 transitions, 2685 flow. Second operand 76 states and 6835 transitions. [2022-11-18 18:36:20,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 749 transitions, 13023 flow [2022-11-18 18:36:20,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 749 transitions, 11773 flow, removed 554 selfloop flow, removed 66 redundant places. [2022-11-18 18:36:20,862 INFO L231 Difference]: Finished difference. Result has 592 places, 272 transitions, 3067 flow [2022-11-18 18:36:20,862 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2429, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=3067, PETRI_PLACES=592, PETRI_TRANSITIONS=272} [2022-11-18 18:36:20,862 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 435 predicate places. [2022-11-18 18:36:20,862 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 272 transitions, 3067 flow [2022-11-18 18:36:20,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:20,863 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:36:20,863 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:20,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-11-18 18:36:20,863 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:36:20,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:20,863 INFO L85 PathProgramCache]: Analyzing trace with hash -795524737, now seen corresponding path program 11 times [2022-11-18 18:36:20,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:36:20,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920929524] [2022-11-18 18:36:20,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:20,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:36:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:22,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:22,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:36:22,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920929524] [2022-11-18 18:36:22,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920929524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:22,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:22,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-18 18:36:22,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570259304] [2022-11-18 18:36:22,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:22,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:36:22,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:36:22,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:36:22,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:36:22,137 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-11-18 18:36:22,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 272 transitions, 3067 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:22,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:36:22,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-11-18 18:36:22,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:36:43,807 INFO L130 PetriNetUnfolder]: 2333/7398 cut-off events. [2022-11-18 18:36:43,807 INFO L131 PetriNetUnfolder]: For 266843/266852 co-relation queries the response was YES. [2022-11-18 18:36:44,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54854 conditions, 7398 events. 2333/7398 cut-off events. For 266843/266852 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 67403 event pairs, 447 based on Foata normal form. 4/7294 useless extension candidates. Maximal degree in co-relation 54576. Up to 1792 conditions per place. [2022-11-18 18:36:44,084 INFO L137 encePairwiseOnDemand]: 136/174 looper letters, 588 selfloop transitions, 42 changer transitions 175/876 dead transitions. [2022-11-18 18:36:44,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 876 transitions, 15566 flow [2022-11-18 18:36:44,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-18 18:36:44,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-11-18 18:36:44,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7504 transitions. [2022-11-18 18:36:44,089 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5134099616858238 [2022-11-18 18:36:44,090 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7504 transitions. [2022-11-18 18:36:44,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7504 transitions. [2022-11-18 18:36:44,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:36:44,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7504 transitions. [2022-11-18 18:36:44,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.33333333333333) internal successors, (7504), 84 states have internal predecessors, (7504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:44,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:44,105 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:44,106 INFO L175 Difference]: Start difference. First operand has 592 places, 272 transitions, 3067 flow. Second operand 84 states and 7504 transitions. [2022-11-18 18:36:44,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 876 transitions, 15566 flow [2022-11-18 18:36:45,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 876 transitions, 14183 flow, removed 649 selfloop flow, removed 60 redundant places. [2022-11-18 18:36:45,384 INFO L231 Difference]: Finished difference. Result has 634 places, 281 transitions, 3366 flow [2022-11-18 18:36:45,384 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2809, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=3366, PETRI_PLACES=634, PETRI_TRANSITIONS=281} [2022-11-18 18:36:45,384 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 477 predicate places. [2022-11-18 18:36:45,384 INFO L495 AbstractCegarLoop]: Abstraction has has 634 places, 281 transitions, 3366 flow [2022-11-18 18:36:45,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:45,385 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:36:45,385 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:45,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-11-18 18:36:45,385 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:36:45,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:45,386 INFO L85 PathProgramCache]: Analyzing trace with hash -611748005, now seen corresponding path program 12 times [2022-11-18 18:36:45,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:36:45,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916707695] [2022-11-18 18:36:45,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:45,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:36:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:46,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:46,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:36:46,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916707695] [2022-11-18 18:36:46,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916707695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:46,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:46,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-18 18:36:46,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196657246] [2022-11-18 18:36:46,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:46,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:36:46,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:36:46,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:36:46,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:36:46,754 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-11-18 18:36:46,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 634 places, 281 transitions, 3366 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:46,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:36:46,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-11-18 18:36:46,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:37:05,428 INFO L130 PetriNetUnfolder]: 2402/7633 cut-off events. [2022-11-18 18:37:05,428 INFO L131 PetriNetUnfolder]: For 291932/291938 co-relation queries the response was YES. [2022-11-18 18:37:05,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58570 conditions, 7633 events. 2402/7633 cut-off events. For 291932/291938 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 70029 event pairs, 829 based on Foata normal form. 1/7459 useless extension candidates. Maximal degree in co-relation 58273. Up to 2824 conditions per place. [2022-11-18 18:37:05,701 INFO L137 encePairwiseOnDemand]: 136/174 looper letters, 624 selfloop transitions, 37 changer transitions 152/884 dead transitions. [2022-11-18 18:37:05,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 884 transitions, 17404 flow [2022-11-18 18:37:05,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-11-18 18:37:05,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-11-18 18:37:05,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7168 transitions. [2022-11-18 18:37:05,708 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5149425287356322 [2022-11-18 18:37:05,708 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7168 transitions. [2022-11-18 18:37:05,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7168 transitions. [2022-11-18 18:37:05,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:37:05,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7168 transitions. [2022-11-18 18:37:05,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.6) internal successors, (7168), 80 states have internal predecessors, (7168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:05,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:05,724 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:05,724 INFO L175 Difference]: Start difference. First operand has 634 places, 281 transitions, 3366 flow. Second operand 80 states and 7168 transitions. [2022-11-18 18:37:05,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 884 transitions, 17404 flow [2022-11-18 18:37:07,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 884 transitions, 14885 flow, removed 1165 selfloop flow, removed 65 redundant places. [2022-11-18 18:37:07,239 INFO L231 Difference]: Finished difference. Result has 648 places, 288 transitions, 3454 flow [2022-11-18 18:37:07,240 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3063, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=3454, PETRI_PLACES=648, PETRI_TRANSITIONS=288} [2022-11-18 18:37:07,240 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 491 predicate places. [2022-11-18 18:37:07,240 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 288 transitions, 3454 flow [2022-11-18 18:37:07,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:07,240 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:37:07,240 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:07,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-11-18 18:37:07,241 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:37:07,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:07,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1762045881, now seen corresponding path program 13 times [2022-11-18 18:37:07,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:07,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823212774] [2022-11-18 18:37:07,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:07,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:08,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:37:08,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:08,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823212774] [2022-11-18 18:37:08,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823212774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:08,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:08,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-18 18:37:08,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108843230] [2022-11-18 18:37:08,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:08,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:37:08,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:08,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:37:08,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:37:08,406 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-11-18 18:37:08,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 288 transitions, 3454 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:08,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:08,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-11-18 18:37:08,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:37:32,610 INFO L130 PetriNetUnfolder]: 2878/9260 cut-off events. [2022-11-18 18:37:32,610 INFO L131 PetriNetUnfolder]: For 367437/367449 co-relation queries the response was YES. [2022-11-18 18:37:33,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72232 conditions, 9260 events. 2878/9260 cut-off events. For 367437/367449 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 88937 event pairs, 889 based on Foata normal form. 1/9046 useless extension candidates. Maximal degree in co-relation 71927. Up to 2581 conditions per place. [2022-11-18 18:37:33,069 INFO L137 encePairwiseOnDemand]: 136/174 looper letters, 533 selfloop transitions, 38 changer transitions 130/772 dead transitions. [2022-11-18 18:37:33,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 772 transitions, 14756 flow [2022-11-18 18:37:33,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-18 18:37:33,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2022-11-18 18:37:33,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 6493 transitions. [2022-11-18 18:37:33,075 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.518279054916986 [2022-11-18 18:37:33,076 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 6493 transitions. [2022-11-18 18:37:33,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 6493 transitions. [2022-11-18 18:37:33,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:37:33,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 6493 transitions. [2022-11-18 18:37:33,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 90.18055555555556) internal successors, (6493), 72 states have internal predecessors, (6493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:33,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 174.0) internal successors, (12702), 73 states have internal predecessors, (12702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:33,089 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 174.0) internal successors, (12702), 73 states have internal predecessors, (12702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:33,090 INFO L175 Difference]: Start difference. First operand has 648 places, 288 transitions, 3454 flow. Second operand 72 states and 6493 transitions. [2022-11-18 18:37:33,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 772 transitions, 14756 flow [2022-11-18 18:37:34,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 772 transitions, 13687 flow, removed 511 selfloop flow, removed 60 redundant places. [2022-11-18 18:37:34,890 INFO L231 Difference]: Finished difference. Result has 665 places, 304 transitions, 3997 flow [2022-11-18 18:37:34,891 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3285, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=3997, PETRI_PLACES=665, PETRI_TRANSITIONS=304} [2022-11-18 18:37:34,891 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 508 predicate places. [2022-11-18 18:37:34,891 INFO L495 AbstractCegarLoop]: Abstraction has has 665 places, 304 transitions, 3997 flow [2022-11-18 18:37:34,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:34,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:37:34,892 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:34,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-11-18 18:37:34,892 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:37:34,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:34,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1614606279, now seen corresponding path program 14 times [2022-11-18 18:37:34,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:34,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20199407] [2022-11-18 18:37:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:34,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:36,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:37:36,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:36,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20199407] [2022-11-18 18:37:36,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20199407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:36,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:36,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-18 18:37:36,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919671265] [2022-11-18 18:37:36,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:36,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:37:36,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:36,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:37:36,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:37:36,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-11-18 18:37:36,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 665 places, 304 transitions, 3997 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:36,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:36,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-11-18 18:37:36,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:03,050 INFO L130 PetriNetUnfolder]: 3083/9823 cut-off events. [2022-11-18 18:38:03,050 INFO L131 PetriNetUnfolder]: For 490993/490993 co-relation queries the response was YES. [2022-11-18 18:38:03,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82665 conditions, 9823 events. 3083/9823 cut-off events. For 490993/490993 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 95619 event pairs, 968 based on Foata normal form. 1/9682 useless extension candidates. Maximal degree in co-relation 82345. Up to 3552 conditions per place. [2022-11-18 18:38:03,492 INFO L137 encePairwiseOnDemand]: 136/174 looper letters, 594 selfloop transitions, 43 changer transitions 180/888 dead transitions. [2022-11-18 18:38:03,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 888 transitions, 17613 flow [2022-11-18 18:38:03,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-18 18:38:03,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-11-18 18:38:03,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7516 transitions. [2022-11-18 18:38:03,499 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5142309797482211 [2022-11-18 18:38:03,499 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7516 transitions. [2022-11-18 18:38:03,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7516 transitions. [2022-11-18 18:38:03,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:03,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7516 transitions. [2022-11-18 18:38:03,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.47619047619048) internal successors, (7516), 84 states have internal predecessors, (7516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:03,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:03,515 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:03,515 INFO L175 Difference]: Start difference. First operand has 665 places, 304 transitions, 3997 flow. Second operand 84 states and 7516 transitions. [2022-11-18 18:38:03,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 698 places, 888 transitions, 17613 flow [2022-11-18 18:38:05,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 888 transitions, 16216 flow, removed 673 selfloop flow, removed 49 redundant places. [2022-11-18 18:38:05,955 INFO L231 Difference]: Finished difference. Result has 725 places, 314 transitions, 4386 flow [2022-11-18 18:38:05,955 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3709, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=4386, PETRI_PLACES=725, PETRI_TRANSITIONS=314} [2022-11-18 18:38:05,956 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 568 predicate places. [2022-11-18 18:38:05,956 INFO L495 AbstractCegarLoop]: Abstraction has has 725 places, 314 transitions, 4386 flow [2022-11-18 18:38:05,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:05,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:05,957 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:05,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-11-18 18:38:05,957 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:38:05,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:05,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1054265333, now seen corresponding path program 15 times [2022-11-18 18:38:05,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:05,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219240409] [2022-11-18 18:38:05,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:05,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:07,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:07,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219240409] [2022-11-18 18:38:07,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219240409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:07,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:07,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-18 18:38:07,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296635386] [2022-11-18 18:38:07,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:07,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:38:07,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:07,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:38:07,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:38:07,203 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 174 [2022-11-18 18:38:07,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 725 places, 314 transitions, 4386 flow. Second operand has 28 states, 28 states have (on average 97.14285714285714) internal successors, (2720), 28 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:07,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:07,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 174 [2022-11-18 18:38:07,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand