./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6e7408-2bd2-43d1-af0a-a9c7313d22ff/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6e7408-2bd2-43d1-af0a-a9c7313d22ff/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6e7408-2bd2-43d1-af0a-a9c7313d22ff/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6e7408-2bd2-43d1-af0a-a9c7313d22ff/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6e7408-2bd2-43d1-af0a-a9c7313d22ff/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6e7408-2bd2-43d1-af0a-a9c7313d22ff/bin/uautomizer-ug76WZFUDN --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 c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 --- 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-6b4ec56 [2022-11-20 12:29:56,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:29:56,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:29:56,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:29:56,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:29:56,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:29:56,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:29:56,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:29:56,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:29:56,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:29:56,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:29:56,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:29:56,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:29:56,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:29:56,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:29:56,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:29:56,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:29:56,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:29:56,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:29:56,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:29:56,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:29:56,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:29:56,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:29:56,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:29:56,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:29:56,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:29:56,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:29:56,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:29:56,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:29:56,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:29:56,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:29:56,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:29:56,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:29:56,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:29:56,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:29:56,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:29:56,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:29:56,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:29:56,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:29:56,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:29:56,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:29:56,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6e7408-2bd2-43d1-af0a-a9c7313d22ff/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:29:56,687 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:29:56,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:29:56,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:29:56,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:29:56,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:29:56,691 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:29:56,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:29:56,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:29:56,693 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:29:56,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:29:56,694 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:29:56,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:29:56,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:29:56,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:29:56,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:29:56,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:29:56,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:29:56,696 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:29:56,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:29:56,696 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:29:56,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:29:56,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:29:56,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:29:56,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:29:56,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:29:56,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:29:56,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:29:56,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:29:56,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:29:56,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:29:56,699 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:29:56,699 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:29:56,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:29:56,699 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_ef6e7408-2bd2-43d1-af0a-a9c7313d22ff/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6e7408-2bd2-43d1-af0a-a9c7313d22ff/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 [2022-11-20 12:29:56,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:29:57,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:29:57,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:29:57,007 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:29:57,009 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:29:57,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6e7408-2bd2-43d1-af0a-a9c7313d22ff/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2022-11-20 12:30:00,059 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:30:00,388 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:30:00,389 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6e7408-2bd2-43d1-af0a-a9c7313d22ff/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2022-11-20 12:30:00,396 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6e7408-2bd2-43d1-af0a-a9c7313d22ff/bin/uautomizer-ug76WZFUDN/data/f67e0c8d2/457412f8094c4e81a751728a1b755de5/FLAGee8f5760a [2022-11-20 12:30:00,419 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6e7408-2bd2-43d1-af0a-a9c7313d22ff/bin/uautomizer-ug76WZFUDN/data/f67e0c8d2/457412f8094c4e81a751728a1b755de5 [2022-11-20 12:30:00,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:30:00,427 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:30:00,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:30:00,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:30:00,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:30:00,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:30:00" (1/1) ... [2022-11-20 12:30:00,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78d0498f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:00, skipping insertion in model container [2022-11-20 12:30:00,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:30:00" (1/1) ... [2022-11-20 12:30:00,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:30:00,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:30:00,636 WARN L237 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_ef6e7408-2bd2-43d1-af0a-a9c7313d22ff/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2022-11-20 12:30:00,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:30:00,652 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:30:00,698 WARN L237 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_ef6e7408-2bd2-43d1-af0a-a9c7313d22ff/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2022-11-20 12:30:00,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:30:00,719 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:30:00,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:00 WrapperNode [2022-11-20 12:30:00,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:30:00,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:30:00,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:30:00,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:30:00,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:00" (1/1) ... [2022-11-20 12:30:00,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:00" (1/1) ... [2022-11-20 12:30:00,786 INFO L138 Inliner]: procedures = 25, calls = 100, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 278 [2022-11-20 12:30:00,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:30:00,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:30:00,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:30:00,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:30:00,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:00" (1/1) ... [2022-11-20 12:30:00,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:00" (1/1) ... [2022-11-20 12:30:00,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:00" (1/1) ... [2022-11-20 12:30:00,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:00" (1/1) ... [2022-11-20 12:30:00,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:00" (1/1) ... [2022-11-20 12:30:00,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:00" (1/1) ... [2022-11-20 12:30:00,816 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:00" (1/1) ... [2022-11-20 12:30:00,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:00" (1/1) ... [2022-11-20 12:30:00,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:30:00,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:30:00,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:30:00,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:30:00,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:00" (1/1) ... [2022-11-20 12:30:00,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:30:00,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6e7408-2bd2-43d1-af0a-a9c7313d22ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:30:00,859 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6e7408-2bd2-43d1-af0a-a9c7313d22ff/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:30:00,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6e7408-2bd2-43d1-af0a-a9c7313d22ff/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:30:00,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:30:00,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:30:00,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:30:00,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:30:00,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:30:00,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:30:00,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:30:00,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:30:00,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:30:00,903 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:30:00,903 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-20 12:30:00,903 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-20 12:30:00,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:30:00,903 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-20 12:30:00,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-20 12:30:00,904 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-20 12:30:00,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-20 12:30:00,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 12:30:00,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 12:30:00,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:30:00,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:30:00,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:30:00,907 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:30:01,029 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:30:01,031 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:30:01,597 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:30:01,683 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:30:01,684 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:30:01,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:30:01 BoogieIcfgContainer [2022-11-20 12:30:01,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:30:01,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:30:01,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:30:01,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:30:01,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:30:00" (1/3) ... [2022-11-20 12:30:01,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e47e42a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:30:01, skipping insertion in model container [2022-11-20 12:30:01,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:30:00" (2/3) ... [2022-11-20 12:30:01,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e47e42a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:30:01, skipping insertion in model container [2022-11-20 12:30:01,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:30:01" (3/3) ... [2022-11-20 12:30:01,696 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2022-11-20 12:30:01,704 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:30:01,716 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:30:01,716 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:30:01,716 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:30:01,796 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-11-20 12:30:01,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 188 transitions, 424 flow [2022-11-20 12:30:01,932 INFO L130 PetriNetUnfolder]: 2/182 cut-off events. [2022-11-20 12:30:01,932 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 12:30:01,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 182 events. 2/182 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 80 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2022-11-20 12:30:01,937 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 188 transitions, 424 flow [2022-11-20 12:30:01,942 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 165 transitions, 366 flow [2022-11-20 12:30:01,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:30:01,958 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;@56c65dc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:30:01,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-20 12:30:02,021 INFO L130 PetriNetUnfolder]: 2/164 cut-off events. [2022-11-20 12:30:02,022 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 12:30:02,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:02,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:02,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:30:02,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:02,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1163564544, now seen corresponding path program 1 times [2022-11-20 12:30:02,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:02,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573073723] [2022-11-20 12:30:02,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:02,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:30:05,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:05,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573073723] [2022-11-20 12:30:05,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573073723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:05,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:05,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 12:30:05,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560615276] [2022-11-20 12:30:05,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:05,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:30:05,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:05,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:30:05,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:30:05,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 188 [2022-11-20 12:30:05,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 165 transitions, 366 flow. Second operand has 13 states, 13 states have (on average 132.23076923076923) internal successors, (1719), 13 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:05,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:05,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 188 [2022-11-20 12:30:05,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:30:40,378 INFO L130 PetriNetUnfolder]: 185942/279767 cut-off events. [2022-11-20 12:30:40,378 INFO L131 PetriNetUnfolder]: For 36645/36645 co-relation queries the response was YES. [2022-11-20 12:30:41,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540509 conditions, 279767 events. 185942/279767 cut-off events. For 36645/36645 co-relation queries the response was YES. Maximal size of possible extension queue 9729. Compared 2526058 event pairs, 58254 based on Foata normal form. 4/276904 useless extension candidates. Maximal degree in co-relation 467504. Up to 77083 conditions per place. [2022-11-20 12:30:42,646 INFO L137 encePairwiseOnDemand]: 162/188 looper letters, 144 selfloop transitions, 31 changer transitions 27/308 dead transitions. [2022-11-20 12:30:42,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 308 transitions, 1152 flow [2022-11-20 12:30:42,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:30:42,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 12:30:42,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2256 transitions. [2022-11-20 12:30:42,669 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-11-20 12:30:42,669 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2256 transitions. [2022-11-20 12:30:42,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2256 transitions. [2022-11-20 12:30:42,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:30:42,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2256 transitions. [2022-11-20 12:30:42,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 141.0) internal successors, (2256), 16 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:42,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 188.0) internal successors, (3196), 17 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:42,718 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 188.0) internal successors, (3196), 17 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:42,720 INFO L175 Difference]: Start difference. First operand has 182 places, 165 transitions, 366 flow. Second operand 16 states and 2256 transitions. [2022-11-20 12:30:42,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 308 transitions, 1152 flow [2022-11-20 12:30:46,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 308 transitions, 1064 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-20 12:30:46,219 INFO L231 Difference]: Finished difference. Result has 195 places, 186 transitions, 552 flow [2022-11-20 12:30:46,221 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=552, PETRI_PLACES=195, PETRI_TRANSITIONS=186} [2022-11-20 12:30:46,227 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 13 predicate places. [2022-11-20 12:30:46,228 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 186 transitions, 552 flow [2022-11-20 12:30:46,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 132.23076923076923) internal successors, (1719), 13 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:46,229 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:30:46,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:46,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:30:46,231 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:30:46,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:46,232 INFO L85 PathProgramCache]: Analyzing trace with hash -984860200, now seen corresponding path program 2 times [2022-11-20 12:30:46,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:46,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040740868] [2022-11-20 12:30:46,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:46,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:30:46,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:46,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040740868] [2022-11-20 12:30:46,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040740868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:30:46,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:30:46,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:30:46,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50318773] [2022-11-20 12:30:46,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:30:46,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:30:46,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:46,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:30:46,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:30:46,806 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 188 [2022-11-20 12:30:46,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 186 transitions, 552 flow. Second operand has 7 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:46,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:30:46,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 188 [2022-11-20 12:30:46,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand