./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 11:02:09,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:02:09,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:02:09,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:02:09,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:02:09,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:02:09,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:02:09,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:02:09,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:02:09,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:02:09,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:02:09,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:02:09,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:02:09,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:02:09,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:02:09,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:02:09,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:02:09,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:02:09,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:02:09,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:02:09,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:02:09,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:02:09,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:02:09,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:02:09,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:02:09,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:02:09,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:02:09,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:02:09,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:02:09,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:02:09,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:02:09,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:02:09,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:02:09,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:02:09,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:02:09,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:02:09,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:02:09,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:02:09,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:02:09,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:02:09,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:02:09,751 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:02:09,799 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:02:09,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:02:09,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:02:09,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:02:09,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:02:09,803 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:02:09,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:02:09,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:02:09,805 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:02:09,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:02:09,807 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:02:09,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:02:09,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:02:09,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:02:09,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:02:09,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:02:09,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:02:09,809 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:02:09,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:02:09,810 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:02:09,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:02:09,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:02:09,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:02:09,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:02:09,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:02:09,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:02:09,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:02:09,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:02:09,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:02:09,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:02:09,814 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:02:09,815 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:02:09,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:02:09,816 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_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 [2022-10-17 11:02:10,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:02:10,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:02:10,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:02:10,193 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:02:10,194 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:02:10,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-10-17 11:02:10,295 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/bin/uautomizer-J5u9QxTXDZ/data/86558f962/6f9f939f8a794c749970fa15b114c705/FLAGaacda38cc [2022-10-17 11:02:10,840 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:02:10,841 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-10-17 11:02:10,850 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/bin/uautomizer-J5u9QxTXDZ/data/86558f962/6f9f939f8a794c749970fa15b114c705/FLAGaacda38cc [2022-10-17 11:02:11,172 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/bin/uautomizer-J5u9QxTXDZ/data/86558f962/6f9f939f8a794c749970fa15b114c705 [2022-10-17 11:02:11,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:02:11,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:02:11,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:02:11,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:02:11,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:02:11,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:02:11" (1/1) ... [2022-10-17 11:02:11,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd6dadc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:11, skipping insertion in model container [2022-10-17 11:02:11,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:02:11" (1/1) ... [2022-10-17 11:02:11,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:02:11,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:02:11,575 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-10-17 11:02:11,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:02:11,620 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:02:11,684 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-10-17 11:02:11,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:02:11,727 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:02:11,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:11 WrapperNode [2022-10-17 11:02:11,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:02:11,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:02:11,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:02:11,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:02:11,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:11" (1/1) ... [2022-10-17 11:02:11,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:11" (1/1) ... [2022-10-17 11:02:11,812 INFO L138 Inliner]: procedures = 29, calls = 95, calls flagged for inlining = 21, calls inlined = 27, statements flattened = 289 [2022-10-17 11:02:11,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:02:11,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:02:11,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:02:11,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:02:11,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:11" (1/1) ... [2022-10-17 11:02:11,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:11" (1/1) ... [2022-10-17 11:02:11,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:11" (1/1) ... [2022-10-17 11:02:11,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:11" (1/1) ... [2022-10-17 11:02:11,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:11" (1/1) ... [2022-10-17 11:02:11,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:11" (1/1) ... [2022-10-17 11:02:11,907 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:11" (1/1) ... [2022-10-17 11:02:11,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:11" (1/1) ... [2022-10-17 11:02:11,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:02:11,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:02:11,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:02:11,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:02:11,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:11" (1/1) ... [2022-10-17 11:02:11,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:02:11,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:11,979 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:11,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:02:12,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:02:12,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 11:02:12,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 11:02:12,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 11:02:12,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 11:02:12,036 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 11:02:12,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 11:02:12,036 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 11:02:12,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-10-17 11:02:12,037 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-10-17 11:02:12,037 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-10-17 11:02:12,037 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-10-17 11:02:12,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:02:12,037 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-10-17 11:02:12,037 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-10-17 11:02:12,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-10-17 11:02:12,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-10-17 11:02:12,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 11:02:12,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 11:02:12,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 11:02:12,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:02:12,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:02:12,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 11:02:12,041 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 11:02:12,191 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:02:12,194 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:02:12,994 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:02:13,328 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:02:13,328 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-10-17 11:02:13,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:02:13 BoogieIcfgContainer [2022-10-17 11:02:13,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:02:13,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:02:13,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:02:13,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:02:13,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:02:11" (1/3) ... [2022-10-17 11:02:13,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3f9e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:02:13, skipping insertion in model container [2022-10-17 11:02:13,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:11" (2/3) ... [2022-10-17 11:02:13,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3f9e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:02:13, skipping insertion in model container [2022-10-17 11:02:13,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:02:13" (3/3) ... [2022-10-17 11:02:13,343 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2022-10-17 11:02:13,352 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 11:02:13,364 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:02:13,365 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:02:13,365 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 11:02:13,499 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-10-17 11:02:13,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 260 transitions, 592 flow [2022-10-17 11:02:13,723 INFO L130 PetriNetUnfolder]: 18/232 cut-off events. [2022-10-17 11:02:13,724 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-10-17 11:02:13,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 232 events. 18/232 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 288 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 200. Up to 3 conditions per place. [2022-10-17 11:02:13,736 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 260 transitions, 592 flow [2022-10-17 11:02:13,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 223 transitions, 494 flow [2022-10-17 11:02:13,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:02:13,773 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;@4b7e5e4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:02:13,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-10-17 11:02:13,883 INFO L130 PetriNetUnfolder]: 18/222 cut-off events. [2022-10-17 11:02:13,883 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-10-17 11:02:13,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:13,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:13,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 11:02:13,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:13,894 INFO L85 PathProgramCache]: Analyzing trace with hash 977027062, now seen corresponding path program 1 times [2022-10-17 11:02:13,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:13,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211471513] [2022-10-17 11:02:13,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:13,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:14,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:14,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:14,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211471513] [2022-10-17 11:02:14,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211471513] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:14,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:14,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:02:14,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600625530] [2022-10-17 11:02:14,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:14,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 11:02:14,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:14,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 11:02:14,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:02:14,575 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 264 [2022-10-17 11:02:14,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 223 transitions, 494 flow. Second operand has 2 states, 2 states have (on average 227.0) internal successors, (454), 2 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:14,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:14,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 264 [2022-10-17 11:02:14,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:15,562 INFO L130 PetriNetUnfolder]: 1084/2340 cut-off events. [2022-10-17 11:02:15,563 INFO L131 PetriNetUnfolder]: For 684/684 co-relation queries the response was YES. [2022-10-17 11:02:15,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4457 conditions, 2340 events. 1084/2340 cut-off events. For 684/684 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 13108 event pairs, 627 based on Foata normal form. 309/2437 useless extension candidates. Maximal degree in co-relation 4157. Up to 1445 conditions per place. [2022-10-17 11:02:15,612 INFO L137 encePairwiseOnDemand]: 255/264 looper letters, 30 selfloop transitions, 0 changer transitions 4/214 dead transitions. [2022-10-17 11:02:15,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 214 transitions, 536 flow [2022-10-17 11:02:15,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 11:02:15,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 11:02:15,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 471 transitions. [2022-10-17 11:02:15,640 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8920454545454546 [2022-10-17 11:02:15,642 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 471 transitions. [2022-10-17 11:02:15,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 471 transitions. [2022-10-17 11:02:15,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:15,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 471 transitions. [2022-10-17 11:02:15,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 235.5) internal successors, (471), 2 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:15,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:15,668 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:15,671 INFO L175 Difference]: Start difference. First operand has 224 places, 223 transitions, 494 flow. Second operand 2 states and 471 transitions. [2022-10-17 11:02:15,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 214 transitions, 536 flow [2022-10-17 11:02:15,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 214 transitions, 504 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-10-17 11:02:15,750 INFO L231 Difference]: Finished difference. Result has 213 places, 210 transitions, 436 flow [2022-10-17 11:02:15,752 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=436, PETRI_PLACES=213, PETRI_TRANSITIONS=210} [2022-10-17 11:02:15,757 INFO L287 CegarLoopForPetriNet]: 224 programPoint places, -11 predicate places. [2022-10-17 11:02:15,757 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 210 transitions, 436 flow [2022-10-17 11:02:15,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 227.0) internal successors, (454), 2 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:15,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:15,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:15,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:02:15,759 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 11:02:15,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:15,760 INFO L85 PathProgramCache]: Analyzing trace with hash -488832778, now seen corresponding path program 1 times [2022-10-17 11:02:15,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:15,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805200503] [2022-10-17 11:02:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:15,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:16,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:16,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:16,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805200503] [2022-10-17 11:02:16,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805200503] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:16,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:16,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:02:16,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542966349] [2022-10-17 11:02:16,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:16,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:02:16,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:16,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:02:16,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:02:16,814 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 264 [2022-10-17 11:02:16,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 210 transitions, 436 flow. Second operand has 6 states, 6 states have (on average 198.33333333333334) internal successors, (1190), 6 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:16,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:16,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 264 [2022-10-17 11:02:16,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:19,118 INFO L130 PetriNetUnfolder]: 3024/6404 cut-off events. [2022-10-17 11:02:19,119 INFO L131 PetriNetUnfolder]: For 486/486 co-relation queries the response was YES. [2022-10-17 11:02:19,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10862 conditions, 6404 events. 3024/6404 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 47606 event pairs, 1153 based on Foata normal form. 1/5769 useless extension candidates. Maximal degree in co-relation 10859. Up to 1683 conditions per place. [2022-10-17 11:02:19,223 INFO L137 encePairwiseOnDemand]: 253/264 looper letters, 95 selfloop transitions, 10 changer transitions 4/269 dead transitions. [2022-10-17 11:02:19,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 269 transitions, 799 flow [2022-10-17 11:02:19,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:02:19,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 11:02:19,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1262 transitions. [2022-10-17 11:02:19,230 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7967171717171717 [2022-10-17 11:02:19,230 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1262 transitions. [2022-10-17 11:02:19,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1262 transitions. [2022-10-17 11:02:19,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:19,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1262 transitions. [2022-10-17 11:02:19,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.33333333333334) internal successors, (1262), 6 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:19,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:19,248 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:19,248 INFO L175 Difference]: Start difference. First operand has 213 places, 210 transitions, 436 flow. Second operand 6 states and 1262 transitions. [2022-10-17 11:02:19,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 269 transitions, 799 flow [2022-10-17 11:02:19,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 269 transitions, 799 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 11:02:19,264 INFO L231 Difference]: Finished difference. Result has 218 places, 217 transitions, 499 flow [2022-10-17 11:02:19,265 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=499, PETRI_PLACES=218, PETRI_TRANSITIONS=217} [2022-10-17 11:02:19,266 INFO L287 CegarLoopForPetriNet]: 224 programPoint places, -6 predicate places. [2022-10-17 11:02:19,267 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 217 transitions, 499 flow [2022-10-17 11:02:19,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 198.33333333333334) internal successors, (1190), 6 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:19,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:19,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:19,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:02:19,270 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 11:02:19,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:19,271 INFO L85 PathProgramCache]: Analyzing trace with hash -463946872, now seen corresponding path program 2 times [2022-10-17 11:02:19,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:19,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054595059] [2022-10-17 11:02:19,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:19,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:19,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:19,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054595059] [2022-10-17 11:02:19,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054595059] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:19,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:19,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:02:19,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928473754] [2022-10-17 11:02:19,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:19,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:02:19,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:19,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:02:19,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:02:19,831 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 264 [2022-10-17 11:02:19,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 217 transitions, 499 flow. Second operand has 6 states, 6 states have (on average 198.33333333333334) internal successors, (1190), 6 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:19,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:19,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 264 [2022-10-17 11:02:19,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:23,131 INFO L130 PetriNetUnfolder]: 4929/10331 cut-off events. [2022-10-17 11:02:23,132 INFO L131 PetriNetUnfolder]: For 2189/2189 co-relation queries the response was YES. [2022-10-17 11:02:23,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19625 conditions, 10331 events. 4929/10331 cut-off events. For 2189/2189 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 85266 event pairs, 1899 based on Foata normal form. 1/9262 useless extension candidates. Maximal degree in co-relation 19617. Up to 3014 conditions per place. [2022-10-17 11:02:23,295 INFO L137 encePairwiseOnDemand]: 252/264 looper letters, 99 selfloop transitions, 14 changer transitions 4/277 dead transitions. [2022-10-17 11:02:23,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 277 transitions, 912 flow [2022-10-17 11:02:23,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:02:23,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 11:02:23,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1263 transitions. [2022-10-17 11:02:23,301 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7973484848484849 [2022-10-17 11:02:23,301 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1263 transitions. [2022-10-17 11:02:23,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1263 transitions. [2022-10-17 11:02:23,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:23,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1263 transitions. [2022-10-17 11:02:23,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.5) internal successors, (1263), 6 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:23,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:23,316 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:23,316 INFO L175 Difference]: Start difference. First operand has 218 places, 217 transitions, 499 flow. Second operand 6 states and 1263 transitions. [2022-10-17 11:02:23,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 277 transitions, 912 flow [2022-10-17 11:02:23,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 277 transitions, 902 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-10-17 11:02:23,330 INFO L231 Difference]: Finished difference. Result has 223 places, 224 transitions, 588 flow [2022-10-17 11:02:23,331 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=588, PETRI_PLACES=223, PETRI_TRANSITIONS=224} [2022-10-17 11:02:23,332 INFO L287 CegarLoopForPetriNet]: 224 programPoint places, -1 predicate places. [2022-10-17 11:02:23,332 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 224 transitions, 588 flow [2022-10-17 11:02:23,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 198.33333333333334) internal successors, (1190), 6 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:23,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:23,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:23,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 11:02:23,334 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 11:02:23,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:23,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1713165580, now seen corresponding path program 1 times [2022-10-17 11:02:23,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:23,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97760325] [2022-10-17 11:02:23,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:23,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:23,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:23,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:23,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97760325] [2022-10-17 11:02:23,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97760325] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:23,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:23,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:02:23,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276311271] [2022-10-17 11:02:23,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:23,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:02:23,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:23,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:02:23,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:02:23,914 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 264 [2022-10-17 11:02:23,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 224 transitions, 588 flow. Second operand has 7 states, 7 states have (on average 203.71428571428572) internal successors, (1426), 7 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:23,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:23,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 264 [2022-10-17 11:02:23,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:28,442 INFO L130 PetriNetUnfolder]: 6461/14314 cut-off events. [2022-10-17 11:02:28,443 INFO L131 PetriNetUnfolder]: For 5889/5889 co-relation queries the response was YES. [2022-10-17 11:02:28,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28452 conditions, 14314 events. 6461/14314 cut-off events. For 5889/5889 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 128379 event pairs, 3381 based on Foata normal form. 312/13144 useless extension candidates. Maximal degree in co-relation 28441. Up to 6507 conditions per place. [2022-10-17 11:02:28,651 INFO L137 encePairwiseOnDemand]: 256/264 looper letters, 106 selfloop transitions, 7 changer transitions 0/276 dead transitions. [2022-10-17 11:02:28,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 276 transitions, 1003 flow [2022-10-17 11:02:28,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 11:02:28,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 11:02:28,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1487 transitions. [2022-10-17 11:02:28,657 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8046536796536796 [2022-10-17 11:02:28,657 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1487 transitions. [2022-10-17 11:02:28,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1487 transitions. [2022-10-17 11:02:28,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:28,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1487 transitions. [2022-10-17 11:02:28,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 212.42857142857142) internal successors, (1487), 7 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:28,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 264.0) internal successors, (2112), 8 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:28,671 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 264.0) internal successors, (2112), 8 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:28,671 INFO L175 Difference]: Start difference. First operand has 223 places, 224 transitions, 588 flow. Second operand 7 states and 1487 transitions. [2022-10-17 11:02:28,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 276 transitions, 1003 flow [2022-10-17 11:02:28,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 276 transitions, 995 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-10-17 11:02:28,690 INFO L231 Difference]: Finished difference. Result has 228 places, 228 transitions, 634 flow [2022-10-17 11:02:28,691 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=634, PETRI_PLACES=228, PETRI_TRANSITIONS=228} [2022-10-17 11:02:28,692 INFO L287 CegarLoopForPetriNet]: 224 programPoint places, 4 predicate places. [2022-10-17 11:02:28,692 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 228 transitions, 634 flow [2022-10-17 11:02:28,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 203.71428571428572) internal successors, (1426), 7 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:28,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:28,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:28,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 11:02:28,694 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 11:02:28,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:28,695 INFO L85 PathProgramCache]: Analyzing trace with hash 523916777, now seen corresponding path program 1 times [2022-10-17 11:02:28,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:28,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289591754] [2022-10-17 11:02:28,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:28,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:29,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:29,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:29,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289591754] [2022-10-17 11:02:29,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289591754] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:29,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:29,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:02:29,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347101047] [2022-10-17 11:02:29,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:29,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:02:29,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:29,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:02:29,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:02:29,621 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 264 [2022-10-17 11:02:29,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 228 transitions, 634 flow. Second operand has 7 states, 7 states have (on average 203.71428571428572) internal successors, (1426), 7 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:29,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:29,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 264 [2022-10-17 11:02:29,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:02:32,585 INFO L130 PetriNetUnfolder]: 5408/11872 cut-off events. [2022-10-17 11:02:32,586 INFO L131 PetriNetUnfolder]: For 5610/5610 co-relation queries the response was YES. [2022-10-17 11:02:32,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24373 conditions, 11872 events. 5408/11872 cut-off events. For 5610/5610 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 102174 event pairs, 3171 based on Foata normal form. 138/10773 useless extension candidates. Maximal degree in co-relation 24360. Up to 6507 conditions per place. [2022-10-17 11:02:32,749 INFO L137 encePairwiseOnDemand]: 256/264 looper letters, 61 selfloop transitions, 4 changer transitions 34/262 dead transitions. [2022-10-17 11:02:32,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 262 transitions, 935 flow [2022-10-17 11:02:32,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 11:02:32,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 11:02:32,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1479 transitions. [2022-10-17 11:02:32,756 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8003246753246753 [2022-10-17 11:02:32,756 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1479 transitions. [2022-10-17 11:02:32,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1479 transitions. [2022-10-17 11:02:32,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:32,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1479 transitions. [2022-10-17 11:02:32,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 211.28571428571428) internal successors, (1479), 7 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:32,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 264.0) internal successors, (2112), 8 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:32,769 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 264.0) internal successors, (2112), 8 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:32,769 INFO L175 Difference]: Start difference. First operand has 228 places, 228 transitions, 634 flow. Second operand 7 states and 1479 transitions. [2022-10-17 11:02:32,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 262 transitions, 935 flow [2022-10-17 11:02:32,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 262 transitions, 929 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-10-17 11:02:32,782 INFO L231 Difference]: Finished difference. Result has 233 places, 225 transitions, 614 flow [2022-10-17 11:02:32,782 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=614, PETRI_PLACES=233, PETRI_TRANSITIONS=225} [2022-10-17 11:02:32,785 INFO L287 CegarLoopForPetriNet]: 224 programPoint places, 9 predicate places. [2022-10-17 11:02:32,786 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 225 transitions, 614 flow [2022-10-17 11:02:32,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 203.71428571428572) internal successors, (1426), 7 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:32,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:02:32,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:32,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 11:02:32,791 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-10-17 11:02:32,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:32,792 INFO L85 PathProgramCache]: Analyzing trace with hash -685206885, now seen corresponding path program 1 times [2022-10-17 11:02:32,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:32,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226677920] [2022-10-17 11:02:32,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:32,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:33,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:33,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226677920] [2022-10-17 11:02:33,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226677920] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:02:33,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931525897] [2022-10-17 11:02:33,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:33,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:02:33,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:33,722 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:02:33,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c0fd92a-065b-4df9-b300-45ab16f9ae7d/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 11:02:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:33,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-17 11:02:33,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:02:34,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:34,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:02:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:34,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931525897] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 11:02:34,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 11:02:34,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-10-17 11:02:34,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903095294] [2022-10-17 11:02:34,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 11:02:34,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-17 11:02:34,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:34,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-17 11:02:34,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-10-17 11:02:34,847 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 264 [2022-10-17 11:02:34,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 225 transitions, 614 flow. Second operand has 18 states, 18 states have (on average 201.5) internal successors, (3627), 18 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:34,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:02:34,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 264 [2022-10-17 11:02:34,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand